Material volatility property testing system

Abstract

This invention discloses a material volatility characteristic testing system. The system includes: a containing device with a sealed chamber for containing a sample to be tested; a vacuum pump connected to the containing device for providing a vacuum environment to the sealed chamber; a sample heating device detachably connected to the containing device for supporting and heating the sample; a sample cooling and collecting device disposed within the sealed chamber, positioned above the sample heating device, for cooling and collecting the sample volatilized after heating; and a measuring device sealed to the containing device for measuring the volatilization rate of the sample during heating. This material volatility characteristic testing system provides a high-temperature and vacuum environment for sample volatilization testing, and allows for online measurement of the sample's volatilization characteristics during the volatilization process using the measuring device.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of materials testing technology, specifically to a material volatility characteristic testing system. Background Technology

[0002] A space heat pipe reactor is a nuclear power source that can be used for deep space exploration. It utilizes heat pipes to carry the heat energy generated by reactor fission out of the reactor core and generate electricity through a thermoelectric conversion device. The heat pipe material operates under high-temperature, vacuum conditions for extended periods. To verify the volatility characteristics of the heat pipe material under these conditions, a volatility characteristic testing system capable of providing both high temperature and vacuum is needed. However, current volatility characteristic testing systems struggle to collect and test volatile substances online. Summary of the Invention

[0003] According to an embodiment of the present invention, a material volatility characteristic testing system is provided. The material volatility characteristic testing system includes: a containing device having a sealed chamber formed inside for containing a sample to be tested; a vacuum pumping device connected to the containing device for providing a vacuum environment for the sealed chamber; a sample heating device detachably connected to the containing device for supporting and heating the sample; a sample cooling and collecting device disposed within the sealed chamber, positioned above the sample heating device, for cooling and collecting the sample volatilized after heating; and a measuring device sealed to the containing device for measuring the volatilization rate of the sample during the heating process.

[0004] In the material volatility characteristic testing system of this invention, the vacuum chamber can provide a high temperature and vacuum environment for the volatilization test of the sample. The sample heating device, sample cooling and collection device and measuring device are all set in the vacuum chamber. The sample cooling and collection device located above the sample heating device can be used to collect volatile substances during the sample heating and volatilization process. At the same time, the measuring device set in the vacuum chamber can be used to measure the volatilization characteristics of the sample online during the sample volatilization process. Attached Figure Description

[0005] Other objects and advantages of the invention will become apparent from the following description of embodiments of the invention with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the invention.

[0006] Figure 1 This is a schematic diagram of a material volatility characteristic testing system according to an embodiment of the present invention.

[0007] Figure 2 yes Figure 1 The diagram shows a partial structural schematic of the material volatility characteristic testing system.

[0008] Figure 3 This is a partial cross-sectional view of a material volatility characteristic testing system according to an embodiment of the present invention.

[0009] Figure 4 This is a partial cross-sectional view from another perspective of a material volatility characteristic testing system according to an embodiment of the present invention.

[0010] Figure 5 yes Figure 4 The image shows a magnified view of point B in the material volatility characteristic testing system.

[0011] Figure 6 This is a schematic diagram of a sample heating device according to an embodiment of the present invention.

[0012] Figure 7 This is a schematic diagram of a sample cooling and collection device according to an embodiment of the present invention.

[0013] Figure 8 yes Figure 3 A magnified view of point A in the material volatility characteristic testing system shown.

[0014] Figure 9 This is a schematic diagram of the structure of a rotating component according to an embodiment of the present invention.

[0015] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding.

[0016] Explanation of reference numerals in the attached figures:

[0017] 100. Containing device; 110. Sealed chamber; 120. Heating device mounting port; 101. Mechanical pump connection port; 102. Molecular pump connection port; 103. Ion pump connection port; 104. Sample loading / unloading port; 105. Resistance gauge interface; 106. Illumination interface; 107. Observation window; 108. Ionization gauge interface;

[0018] 211. Mechanical pump; 221. Molecular pump; 222. Second control valve; 2221. First operating unit; 231. Ion pump; 232. Third control valve; 2321. Second operating unit;

[0019] 300. Sample heating device; 310. Sealing connection part; 311. Connection hole; 312. Connecting cylinder; 313. Third sealing part; 314. Electrode protective cover; 320. Sample bearing part; 330. Heater; 340. Heat insulation part; 341. First heat insulation column; 342. Heat insulation plate; 343. Second heat insulation column; 350. Insulating pad; 360. Temperature measuring part; 370. Electrode;

[0020] 400. Sample cooling and collection device; 410. Sealing cap; 411. Through hole; 412. Rotary component mounting port; 413. Rotary component connecting part;

[0021] 420. Sample collection cooling tube; 421. Inner tube; 422. Outer tube; 423. Coolant inlet; 424. Coolant outlet; 430. Sample collection section; 440. First bellows; 450. First sealing section;

[0022] 460. Lifting assembly; 461. Lifting support base; 462. Lifting drive component; 463. Lifting lead screw; 464. Lifting guide rail; 465. Lifting part; 470. Sample protection part;

[0023] 480. Rotating assembly; 481. Rotating drive component; 482. Drive shaft; 4821. Housing; 4822. Rotating shaft; 4823. Positioning part; 483. Connecting rod; 4831. First connecting rod; 4832. Second connecting rod; 4833. Lifting slide;

[0024] 490. Transmission connection part; 491. Rotary limiting groove; 492. Rotary limiting block;

[0025] 500. Measuring device; 510. Measuring mounting pipe; 511. Second bellows; 512. Second sealing part; 520. Measuring sensor; 521. Sensor connection part; 522. Sensor connection wire; 530. Measuring cooling pipe; 531. Liquid inlet pipe; 532. Liquid outlet pipe;

[0026] 540. Measuring moving component; 541. Moving support base; 542. Moving drive unit; 543. Moving lead screw; 544. Moving guide rail; 545. Moving part;

[0027] 600. Coolant supply unit;

[0028] 700. Support device; 710. Support frame; 720. Casters; 730. Support plate;

[0029] 800, Controller. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only one embodiment of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0031] It should be noted that, unless otherwise defined, the technical or scientific terms used in this application should have the ordinary meaning understood by a person with ordinary skill in the art to which this application pertains. Where the terms "first," "second," etc., are used throughout the text, they are used only to distinguish similar objects and should not be construed as indicating or implying their relative importance, order of precedence, or implicitly specifying the number of technical features indicated. It should be understood that the data described by "first," "second," etc., can be interchanged where appropriate. Where "and / or" appears throughout the text, it means including three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B. Furthermore, for ease of description, spatial relative terms such as "above," "below," "top," "bottom," etc., may be used here, only to describe the spatial positional relationship between one device or feature as shown in the figure and other devices or features. It should be understood that this also includes different orientations in use or operation besides those shown in the figure.

[0032] Some space materials (e.g., space heat pipe materials) need to operate in high-temperature vacuum environments for extended periods. Evaporation and sublimation during service can cause changes in material composition and mass loss, altering the material's original properties. Therefore, the volatility characteristics of materials under high-temperature vacuum conditions are a crucial performance indicator for space materials. To test these volatility characteristics, embodiments of this invention provide a material volatility characteristic testing system, enabling online measurement of the material's volatility characteristics under vacuum conditions.

[0033] Figure 1 A schematic diagram of a material volatility characteristic testing system according to an embodiment of the present invention is shown. Figure 2 It shows Figure 1 The diagram shows a partial structural schematic of the material volatility characteristic testing system. Figure 3 This is a partial cross-sectional view of a material volatility characteristic testing system according to an embodiment of the present invention. Figure 4 This is a partial cross-sectional view from another perspective of a material volatility characteristic testing system according to an embodiment of the present invention.

[0034] like Figures 1 to 4As shown, the material volatility characteristic testing system in this embodiment of the invention includes a containing device 100, a vacuum pumping device, a sample heating device 300, a sample cooling and collecting device 400, and a measuring device 500. The containing device 100 has a sealed chamber 110 inside for containing the sample to be tested. The vacuum pumping device is connected to the containing device 100 to provide a vacuum environment for the sealed chamber 110. The sample heating device 300 is detachably connected to the containing device 100 for carrying and heating the sample. The sample cooling and collecting device 400 is disposed within the sealed chamber 110, above the sample heating device 300, and is used to cool and collect the sample that has volatilized after heating. The measuring device 500 is sealed to the containing device 100 and is used to measure the volatilization rate of the sample during the heating process.

[0035] In the material volatility characteristic testing system of this invention embodiment, the vacuum pumping device can provide a vacuum environment for the sealed chamber 110, thereby enabling the volatilization test of the sample under vacuum. The sample heating device 300, the sample cooling and collection device 400, and the measuring device 500 are all arranged in the sealed chamber 110. The sample heating device 300 heats the sample to achieve the volatilization test of the sample under vacuum and high temperature. The sample cooling and collection device 400 located above can collect the volatile substances during the sample volatilization process. At the same time, the measuring device 500 can realize the online measurement of the volatilization characteristics of the sample during the sample volatilization process.

[0036] like Figure 1 As shown, in some embodiments, the testing system further includes a support device 700, with a receiving device 100 disposed on the support device 700. The support device 700 forms a receiving space for accommodating devices such as a controller 800. Specifically, the support device 700 includes a support frame 710, casters 720, and a support plate 730. The support frame 710 is a hollow cuboid shape, with an internal receiving space for accommodating and supporting some devices in the testing system. The support plate 730 covers the top of the support frame 710, and the receiving device 100, sample heating device 300, sample cooling and collecting device 400, and testing device are disposed on the support plate 730, providing support for the receiving device 100, etc. The casters 720 are disposed at the bottom of the support frame 710 and evenly distributed in the circumferential direction of the support frame 710. The casters 720 provide support for the support frame 710, support plate 730, and the receiving device 100 thereon, and can also allow the testing system to be moved when needed.

[0037] In some embodiments, the support frame 710 is constructed from aluminum alloy, and the support plate 730 can be an aluminum composite panel. Furthermore, aluminum composite panels can be used to cover all surfaces of the support frame 710. The use of aluminum alloy and aluminum composite panels in this embodiment reduces the weight of the support device 700. In some embodiments, the casters 720 can be casters (likely referring to casters in some models), facilitating the movement and securing of the support device 700.

[0038] In some embodiments, the receiving device 100 is provided with multiple connection ports for connecting a vacuum pumping device. The vacuum pumping device includes multiple vacuum pumps and multiple control valves. The multiple vacuum pumps are respectively connected to the multiple connection ports, and the vacuum pumps are used to evacuate the sealed chamber 110 to provide a vacuum environment for the sealed chamber 110. In this embodiment, multiple vacuum pumps are provided, which can achieve vacuuming of the sealed chamber 110 to different degrees. The control valves are connected between the vacuum pumps and the connection ports to control the opening and closing of the gas path between the vacuum pumps and the sealed chamber 110. When it is necessary to evacuate the sealed chamber 110, the vacuum pumps and control valves are opened to evacuate the sealed chamber 110; when the vacuum level required for testing is reached in the sealed chamber 110, the control valves and vacuum pumps can be closed sequentially to maintain the sealed chamber 110 at the required vacuum level.

[0039] Specifically, such as Figures 1 to 3 As shown, multiple connection ports include a mechanical pump connection port 101, a molecular pump connection port 102, and an ion pump connection port 103. Multiple vacuum pumps include a mechanical pump 211, a molecular pump 221, and an ion pump 231. Mechanical pump 211 is connected to mechanical pump connection port 101 and is used to pre-evacuate the sealed chamber 110. Molecular pump 221 is connected to molecular pump connection port 102 and is used to further evacuate the sealed chamber 110 after pre-evacuation. Ion pump 231 is connected to ion pump connection port 103 and is used to evacuate the sealed chamber 110 to an ultra-high vacuum state. In this embodiment, an ultra-high vacuum state refers to a pressure below 1×10⁻⁶. -6 Pa is a vacuum state.

[0040] like Figure 1 As shown, the mechanical pump 211 can be disposed on the side of the support device 700, and the molecular pump 221 and the ion pump 231 can be disposed on the support plate 730, respectively located on opposite sides of the receiving device 100.

[0041] In this embodiment, the mechanical pump 211 can evacuate the sealed chamber 110 to approximately 10 Pa, and the molecular pump 221 can further evacuate the sealed chamber 110 to 1 × 10 Pa. -4 At approximately Pa, the vacuum level in the sealed chamber 110 can be further reduced to 1 × 10⁻⁶ using ion pump 231. -6 The ultra-high vacuum state is Pa. Among them, the ion pump 231 can be a sputtering ion pump.

[0042] In this embodiment, molecular pump 221 and ion pump 231 are used as the main vacuum pumps, enabling an ultra-high vacuum environment to be achieved within the sealed chamber 110, thus realizing the testing of the volatilization characteristics of materials under ultra-high vacuum conditions. Some space heat pipe materials are used under conditions of high temperature (above 800°C) and ultra-high vacuum (below 1×10⁻⁶). -6 With its high strength (Pa) and ultra-long lifespan (over 200,000 hours), the testing system in this embodiment facilitates the analysis of the volatilization characteristics of space heat pipe materials operating in high-temperature and ultra-high vacuum environments. Mechanical pump 211 is used as a pre-evacuation pump and a backing pump for molecular pump 221 to pre-evacuate the sealed chamber 110, thereby facilitating the operation of molecular pump 221 and improving the efficiency of the vacuum pumping device.

[0043] Furthermore, a second control valve 222 is provided between the molecular pump 221 and the molecular pump connection port 102, and a third control valve 232 is provided between the ion pump 231 and the ion pump connection port 103, respectively used to control the opening and closing of the gas path between the molecular pump 221 and the ion pump 231 and the sealed chamber 110. The second control valve 222 is provided with a first operating part 2221; manually rotating the first operating part 2221 controls the opening and closing of the second control valve 222. Similarly, the third control valve 232 is provided with a second operating part 2321; manually rotating the second operating part 2321 controls the opening and closing of the third control valve 232. The second control valve 222 and the third control valve 232 are ultra-high vacuum gate valves, which can ensure that the sealed chamber 110 is maintained in an ultra-high vacuum state.

[0044] In addition, a first control valve can be connected between the mechanical pump 211 and the mechanical pump connection port 101. The first control valve can be a bypass valve, used to evacuate the sealed chamber 110 from the bypass.

[0045] In some embodiments, the containing device 100 is provided with a heating belt for heating the containing device 100. After the mechanical pump 211 pre-evacuates the sealed chamber 110, the containing device 100 is baked by the heating belt to reduce the gas adsorbed on the inner wall of the containing device 100, and then the molecular pump 221 is used to further evacuate the vacuum, which can improve the efficiency of vacuuming.

[0046] like Figures 1 to 4 As shown, the receiving device 100 in this embodiment can be cylindrical, with a cylindrical sealed chamber 110 formed inside. In some embodiments, the receiving device 100 is welded from stainless steel (e.g., stainless steel 316), giving it excellent high-temperature resistance and corrosion resistance.

[0047] In some embodiments, the surface of the receiving device 100 is treated with vacuum degassing, glass bead blasting and chemical polishing processes to ensure that the sealed chamber 110 can achieve the required leakage rate, ensure that the sealed chamber 110 can be evacuated to an ultra-high vacuum state, and at the same time avoid large changes in the vacuum degree inside the sealed chamber 110 after evacuating to an ultra-high vacuum state.

[0048] In some embodiments, the testing system further includes a vacuum measuring element mounted in the housing 100 for real-time measurement of the vacuum level within the sealed chamber 110. For example, the vacuum measuring element includes a resistance gauge and an ionization gauge. Figure 1 and Figure 2 As shown, the receiving device 100 is equipped with a resistance gauge interface 105 and an ionization gauge interface 108. The resistance gauge interface 105 is used to connect a resistance gauge, which is used to measure the lower vacuum level inside the sealed chamber 110 in real time. The ionization gauge interface 108 is connected between the ion pump 231 and the third control valve 232, and is used to connect an ionization gauge to achieve real-time measurement of the higher vacuum level inside the sealed chamber 110.

[0049] In some embodiments, the receiving device 100 is further provided with an observation window 107 to facilitate observation of the conditions inside the sealed chamber 110 during testing. Optionally, the observation window 107 is formed by mismatched sealing of oxygen-free high-conductivity copper and glass; optionally, the observation window 107 is non-removable. In addition, the receiving device 100 is also provided with an illumination interface 106 for installing an illumination device to illuminate the sealed chamber 110, thereby enabling clearer observation of the environment inside the sealed chamber 110 during testing.

[0050] like Figures 1 to 3 As shown, the receiving device 100 in this embodiment is also provided with a sample loading port 104, which is used to place the sample to be tested into the sealed chamber 110, and to remove the sample after the test is completed.

[0051] In some embodiments, the receiving device 100 may also be provided with a gas filling / draining port for filling the vacuum-sealed chamber 110 with gas after the test, so as to bring the sealed chamber 110 to a normal pressure state, making it easier to open the receiving device 100 to remove the sample. In addition, the receiving device 100 is also provided with a spare port for connecting with other required equipment, reserving connection interfaces for adding other functions, thereby meeting different needs.

[0052] See Figures 3 to 5 In some embodiments, the bottom of the receiving device 100 is provided with a heating device mounting port 120. For example... Figure 5 and Figure 6As shown, the sample heating device 300 includes a sealing connection 310, a sample carrier 320, and a heater 330. The sealing connection 310 is detachably and sealingly connected to the heating device mounting port 120 to seal the heating device mounting port 120, ensuring the airtightness of the sealed chamber 110 and maintaining it at the required vacuum level for testing. The sample carrier 320 is disposed on the sealing connection 310 and located within the sealed chamber 110, and is used to carry the sample. The heater 330 is connected between the sealing connection 310 and the sample carrier 320 to heat the sample carrier 320, thereby heating the sample placed on the sample carrier 320 to achieve volatilization testing of the sample under high-temperature vacuum conditions.

[0053] In this embodiment, the sample heating device 300 adopts an independent structure. The sample heating device 300 and the housing device 100 are independent of each other. When needed, the sample heating device 300 can be installed in the sealed chamber 110 by connecting the heating device mounting port 120 and the sealing connection part 310.

[0054] In some embodiments, heater 330 is a tantalum wire heater. Specifically, the tantalum wire heater includes a frame, a heating wire, and an insulating sleeve. The tantalum wire heater is cylindrical in shape, the frame can be a multi-layered annular plate, and the heating wire is wound parallel to each other on the frame to minimize the electromagnetic field generated when current passes through the heating wire. The insulating sleeve is fitted over the entire frame to electrically insulate the heating wire. For example, the frame is a tantalum plate, the heating wire is a tantalum wire, and the insulating sleeve is a thin-walled Al2O3 ceramic sleeve. In this embodiment, tantalum, with its low vapor output, low vapor pressure, and good chemical stability, is used as the heating material, making it suitable for operation in the vacuum environment of the testing system.

[0055] In some embodiments, the sealing connection 310 is an ultra-high vacuum flange. Using an ultra-high vacuum flange ensures the sealing performance of the sealed chamber 110 and maintains the ultra-high vacuum state within the sealed chamber 110. Specifically, the ultra-high vacuum flange includes a first flange, a second flange, and connecting bolts. The first flange is fixed to the heating device mounting port 120 of the receiving device 100, the heater 330 and the sample carrier 320 are disposed on the second flange, and the connecting bolts are used to connect the first flange and the second flange, thereby enabling the installation of the sample heating device 300 within the sealed chamber 110.

[0056] like Figure 5 and Figure 6As shown, in some embodiments, the sealing connection portion 310 is provided with a connection hole 311. The sample heating device 300 also includes a temperature measuring portion 360, which passes through the connection hole 311. One end of the temperature measuring portion 360 extends to the heater 330 inside the sealed chamber 110, and is used to measure the heating temperature of the heater 330. Optionally, the temperature measuring portion 360 is a thermocouple.

[0057] In addition, the sample heating device 300 also includes an electrode 370, which passes through the connection hole 311. One end of the electrode 370 is connected to the heater 330, and the other end extends outside the receiving device 100 and is connected to the power supply device, thereby supplying power to the heater 330 through the electrode 370. In this embodiment, the electrode 370 is a four-core electrode.

[0058] In order to seal the connection hole 311 of the sealing connection 310, such as Figure 5 As shown, a connecting cylinder 312 is provided at the connecting hole 311 of the sealing connection part 310, and the third sealing part 313 is sealed to the connecting cylinder 312 to achieve the sealing of the receiving device 100. Specifically, the electrode 370 passes through the third sealing part 313 and is sealed to the third sealing part 313. One end of the electrode 370 passes through the connecting cylinder 312 and extends to the heater 330 inside the sealed chamber 110, and the other end extends to the outside of the sealed chamber 110, thereby providing current to the heater 330 through the electrode 370.

[0059] In this embodiment, the third sealing part 313 can be an ultra-high vacuum flange, which includes a first flange, a second flange, and connecting bolts. The first flange is fixed to the end of the connecting cylinder 312 away from the sealing connection part 310, the electrode 370 passes through the second flange, and the connecting bolts are used to connect the first flange and the second flange, thereby realizing the installation of the electrode 370 and the sealing of the connection hole 311.

[0060] like Figure 5 and Figure 6 As shown, the sample heating device 300 also includes an electrode protective cover 314, which surrounds a portion of the electrode 370 located outside the sealed chamber 110 to protect the electrode 370 and prevent damage to it. Specifically, one end of the electrode protective cover 314 is connected to the third sealing part 313 to prevent the electrode 370 from being exposed to the outside.

[0061] like Figure 6As shown, in some embodiments, the sample heating device 300 further includes a heat insulation portion 340. The heat insulation portion 340 is connected between the sealing connection portion 310 and the heater 330, and is used to isolate the heater 330 from the sealing connection portion 310, preventing the heat of the heater 330 from being transferred to the outside of the sealed chamber 110, thereby achieving heat preservation of the sealed chamber 110, and thus preventing heat loss that would make it difficult to maintain the temperature inside the sealed chamber 110 at the required test temperature.

[0062] See Figure 5 and Figure 6 In some embodiments, the heat insulation portion 340 includes a plurality of first heat insulation columns 341, a heat insulation plate 342, and a plurality of second heat insulation columns 343. The plurality of first heat insulation columns 341 are fixed to the sealing connection portion 310 and are evenly distributed around the connection hole 311. The heat insulation plate 342 is connected to the plurality of first heat insulation columns 341, and the plurality of second heat insulation columns 343 are connected between the heat insulation plate 342 and the heater 330, with each second heat insulation column 343 correspondingly disposed between two adjacent first heat insulation columns 341.

[0063] In this embodiment, by setting the first heat-insulating column 341, the heat-insulating plate 342, and the second heat-insulating column 343, not only is the heater 330 supported and fixed, but the heater 330 is also isolated from the sealing connection 310, greatly increasing the obstruction to the heat transfer from the heater 330 to the sealing connection 310 and improving the heat insulation effect. Furthermore, in this embodiment, the first heat-insulating column 341 and the second heat-insulating column 343 are staggered and supported and isolated by the heat-insulating plate 342, further improving the heat insulation effect.

[0064] Furthermore, multiple heat insulation holes are evenly provided on the second heat insulation column 343. By providing multiple heat insulation holes, the thermal conductivity of the second heat insulation column 343, which is directly connected to the heater 330, is reduced, thereby further reducing the heat dissipation of the heater 330 to the outside.

[0065] like Figure 6 As shown, in some embodiments, the sample heating device 300 further includes an insulating pad 350, which is disposed between the sample carrier 320 and the heater 330 to insulate the heater 330 and prevent electrical conduction between the heater 330 and the sample carrier 320 from affecting the volatile characteristics test of the sample.

[0066] like Figure 3 and Figure 8 As shown, in some embodiments, the top of the receiving device 100 is provided with a collection device mounting port. Specifically, the top opening of the cylindrical receiving device 100 is the collection device mounting port, used to install the sample cooling collection device 400.

[0067] like Figure 7 and Figure 8As shown, the sample cooling and collection device 400 includes a sealing cap 410, a sample collection cooling tube 420, and a sample collection section 430. The sealing cap 410 is sealed to the mounting port of the collection device, sealing the mounting port. The sealing cap 410 has a through hole 411 through which the sample collection cooling tube 420 slidably passes. One end of the sample collection cooling tube 420 extends into the sealed chamber 110, providing a circulation channel for the coolant. The sample collection section 430 is connected to the end of the sample collection cooling tube 420 located within the sealed chamber 110. The sample collection cooling tube 420 cools the sample collection section 430, which collects the sample that has evaporated after heating.

[0068] In this embodiment, a sample heating device 300 and a sample cooling and collecting device 400 are installed at the bottom and top of the containing device 100, respectively, such that the sample cooling and collecting device 400 is located directly above the sample heating device 300. Thus, during the process of the sample being heated and volatilized by the sample heating device 300, the volatile substances volatilized by the sample can be collected by the sample cooling and collecting device 400, thereby realizing the volatilization characteristic test of the sample.

[0069] In some embodiments, the sample collection section 430 is detachably connected to the sample collection cooling tube 420. After the sample heating is complete, the sample collection section 430 can be removed from the sealed chamber 110 to perform further measurements on the volatile substances condensed on the sample collection section 430. For example, a thickness gauge can be used to measure the thickness of the volatile substances on the sample collection section 430; the thickness gauge can be an X-ray thickness gauge. The specific composition of the volatile substances on the sample collection section 430 can also be determined, for example, using an X-ray diffractometer.

[0070] Furthermore, after the sample heating is complete, the tested sample can be removed from the sealed chamber 110 for measurement. For example, the surface morphology of the heated sample can be observed using a scanning electron microscope, and the mass of the sample before and after heating can be determined, thereby calibrating the total volatilization of the sample. The mass of the sample can be measured using a high-precision balance.

[0071] like Figure 8 As shown, in some embodiments, the sample collection cooling tube 420 is a double-layered tube, comprising an inner tube 421 and an outer tube 422. The outer tube 422 is sleeved outside the inner tube 421, with a gap between the outer tube 422 and the inner tube 421. Both ends of the outer tube 422 are closed, and one end of the inner tube 421 located outside the sealed chamber 110 extends out of the outer tube 422, while the other end of the inner tube 421 located inside the sealed chamber 110 is located inside the outer tube 422, thus connecting the inner tube 421 with the gap between the inner tube 421 and the outer tube 422. Figure 8As shown, the sample collection cooling tube 420 has a coolant inlet 423 and a coolant outlet 424, which are located outside the sealed chamber 110. The coolant inlet 423 is located at the end of the inner tube 421 located outside the sealed chamber 110, and the coolant outlet 424 is located on the outer tube 422 and is close to the end of the outer tube 422.

[0072] In some embodiments, the sample collection section 430 is sheet-shaped, for example, the sample collection section 430 is a stainless steel sheet. The end of the outer tube 422 of the sample collection cooling tube 420 located in the sealed chamber 110 is connected to the sample collection section 430. The coolant circulates in the inner tube 421 and the gap between the outer tube 422 and the inner tube 421, thereby cooling the sample collection section 430 so that volatile substances can condense and deposit on the surface of the sample collection section 430 when they come into contact with it.

[0073] like Figure 1 As shown, in some embodiments, the testing system further includes a coolant supply device 600, which is connected to the coolant inlet 423 and coolant outlet 424 of the sample collection cooling pipe 420, respectively, for providing circulating coolant to the sample collection cooling pipe 420. The coolant circulates between the coolant supply device 600 and the sample collection cooling pipe 420 to cool the sample collection section 430. Optionally, the coolant used in this embodiment is cooling water.

[0074] like Figure 7 and Figure 8 As shown, in some embodiments, the sample cooling and collecting device 400 further includes a first bellows 440 and a first sealing part 450. The first bellows 440 is disposed outside the sealed chamber 110 and sleeved on the outside of the sample collecting and cooling tube 420. One end of the first bellows 440 is fixedly connected to the through hole 411 of the sealing cap 410, allowing the first bellows 440 to communicate with the sealed chamber 110 through the through hole 411. The first sealing part 450 is connected to the other end of the first bellows 440 away from the sealing cap 410. The first sealing part 450 is used to seal the first bellows 440, thereby achieving a seal at the through hole 411 on the sealing cap 410. The sample collecting and cooling tube 420 is sealed and fixedly connected to the first sealing part 450, with the end of the sample collecting and cooling tube 420 away from the sample collecting part 430 extending to the outside of the first bellows 440.

[0075] Specifically, the first sealing part 450 is an ultra-high vacuum flange, which is sealed to the end of the first bellows 440 away from the receiving device 100, thereby sealing the first bellows 440. The sample collection cooling pipe 420 passes through the ultra-high vacuum flange and is sealed and fixedly connected to the ultra-high vacuum flange, thereby achieving the sealing of the first bellows 440 and the fixation of the sample collection cooling pipe 420. Furthermore, the coolant inlet 423 and the coolant outlet 424 are both located outside the first bellows 440, facilitating coolant circulation.

[0076] like Figure 7 and Figure 8 As shown, in some embodiments, the sample cooling and collection device further includes a lifting assembly 460, which is located outside the sealed chamber 110 and is disposed on the sealing cover 410. The lifting assembly 460 is connected to the first sealing part 450, and the first bellows 440 is axially extendable. The lifting assembly 460 drives the first sealing part 450 to move up and down along the axial direction of the first bellows 440, thereby extending and retracting the first bellows 440 and driving the sample collection and cooling pipe 420 to move up and down.

[0077] In this embodiment, the lifting assembly 460 drives the first sealing part 450 to move up and down, which in turn drives the sample collection cooling tube 420 connected to the first sealing part 450 to move up and down, thereby realizing the up and down movement of the sample collection part 430. This allows for flexible adjustment of the height of the sample collection part 430 to meet different needs. For example, when using the measuring device 500 to measure the evaporation rate of a sample, moving the sample collection part 430 upward can provide space for the measuring device 500.

[0078] like Figure 7 and Figure 8 As shown, the lifting assembly 460 includes a lifting support base 461, a lifting drive component 462, a lifting screw 463, a lifting guide rail 464, and a lifting part 465. The lifting support base 461 supports and mounts the lifting drive component 462, the lifting screw 463, and the lifting guide rail 464. The lifting support base 461 includes at least two spaced-apart mounting plates, one of which is mounted on a sealing cover 410. The lifting guide rail 464 is fixed between the two mounting plates, and both ends of the lifting screw 463 are rotatably connected to the two mounting plates. The lifting part 465 is slidably connected to the lifting guide rail 464, and the lifting part 465 has a threaded hole that mates with the lifting screw 463, with the lifting screw 463 passing through the threaded hole.

[0079] In this embodiment, the lifting part 465 is fixedly connected to the first sealing part 450. Through the cooperation of the lifting screw 463 and the threaded hole, when the lifting screw 463 rotates, it can drive the lifting part 465 to move up and down along the lifting guide rail 464, thereby driving the first sealing part 450 to move up and down, so as to realize the extension and retraction of the first bellows 440.

[0080] Furthermore, the lifting drive component 462 is installed on the side of the upper mounting plate away from the receiving device 100, and the lifting drive component 462 is fixedly connected to the lifting screw 463. When the lifting drive component 462 rotates, it can drive the lifting screw 463 to rotate, thereby realizing the up and down movement of the lifting part 465. In some embodiments, the lifting drive component 462 is a manual rotating wheel, and the sample collection part 430 can be raised and lowered by manually rotating the wheel.

[0081] In addition, the lifting support 461 includes at least two side plates, which are respectively connected between the two mounting plates, and the two side plates are arranged opposite to each other. The side plates are used to support the upper mounting plate. In some embodiments, the side plates are also marked with scales for measuring the lifting distance of the lifting unit 465.

[0082] like Figure 7 and Figure 8 As shown, in some embodiments, the sample cooling and collection device 400 further includes a sample protection section 470 and a rotating assembly 480. The sample protection section 470 is rotatably disposed below the sample collection section 430. During sample heating, the sample protection section 470 is moved away from the sample collection section 430; after sample heating is complete, the sample protection section 470 rotates to be directly below the sample collection section 430 to shield the sample collection section 430 and prevent contamination. The rotating assembly 480 is fixed to the sealing cap 410 and connected to the sample protection section 470, and is used to drive the sample protection section 470 to rotate relative to the sample collection section 430.

[0083] Specifically, the sample protection unit 470 has a clearance position and a protection position. The protection position is located directly below the sample collection unit 430, and the clearance position is away from the sample collection unit 430. The rotating assembly 480 is used to drive the sample protection unit 470 to rotate between the clearance position and the protection position. During sample heating, the sample protection unit 470 is in the clearance position; after sample heating is completed, the sample protection unit 470 rotates to the protection position to shield the sample collection unit 430.

[0084] In this embodiment, the sample protection part 470 can be sheet-shaped, and the sample protection part 470 can be the same in shape and size as the sample collection part 430, so as to completely cover the sample collection part 430 and prevent it from being contaminated.

[0085] In this embodiment, by providing a rotatable sample protection part 470 below the sample collection part 430, the sample protection part 470 can be rotated to directly below the sample collection part 430 after the sample heating is completed to protect the sample collection part 430 from contamination. Simultaneously, during the sample heating process, the sample protection part 470 can be rotated away from the sample collection part 430 to avoid affecting the collection of volatile substances by the sample collection part 430.

[0086] like Figure 7 and Figure 8 As shown, in some embodiments, the rotating assembly 480 includes a rotating drive 481, a drive shaft 482, and a connecting rod 483. The rotating drive 481 is disposed outside the sealed chamber 110, and the drive shaft 482 is connected to the rotating drive 481. The rotating drive 481 is configured to be rotatable to drive the drive shaft 482 to rotate. The drive shaft 482 passes through the sealing cover 410 and extends into the sealed chamber 110, and the drive shaft 482 is sealed to the sealing cover 410. The connecting rod 483 is connected to the end of the drive shaft 482 away from the rotating drive 481, and the sample protection part 470 is connected to the end of the connecting rod 483 away from the drive shaft 482. The drive shaft 482 is used to drive the connecting rod 483 and the sample protection part 470 to rotate. In this embodiment, the rotation of the sample protection part 470 inside the sealed chamber 110 can be controlled by rotating the rotating drive 481 disposed outside the sealed chamber 110.

[0087] like Figure 7 and Figure 8 As shown, in some embodiments, the sealing cover 410 is provided with a rotating component mounting port 412, and a rotating component connecting part 413 is connected to the rotating component mounting port 412 for sealing connection with the rotating component 480.

[0088] In some embodiments, the rotary drive 481 is a rotary handle, which can be manually rotated to control the rotation of the sample protection part 470. In some embodiments, the rotary drive 481 is magnetically driven to the drive shaft 482. Specifically, the rotary drive 481 is cylindrical, and a magnet is fixed to the inner surface of the rotary drive 481. Figure 9 As shown, the drive shaft 482 includes a housing 4821, a rotating shaft 4822, and a magnet. One end of the housing 4821 is closed and inserted into the rotary drive member 481, while the other end is sealed to the rotary assembly connection portion 413. For example, both the rotary assembly connection portion 413 and the other end of the housing 4821 away from the rotary drive member 481 are provided with ultra-high vacuum flanges, and the rotary assembly 480 can be sealed by connecting two ultra-high vacuum flanges.

[0089] Furthermore, one end of the rotating shaft 4822 is inserted into the housing 4821, and a bearing is provided between the rotating shaft 4822 and the housing 4821, allowing the rotating shaft 4822 to rotate relative to the housing 4821. The other end of the rotating shaft 4822 extends through the housing 4821 and the rotating assembly connecting part 413 into the sealed chamber 110 and is connected to the connecting rod 483. In this embodiment, a magnet is fixed to one end of the rotating shaft 4822 located inside the housing 4821. When the rotating drive member 481 rotates, the magnet inside the rotating drive member 481 drives the magnet to rotate, and the magnet drives the rotating shaft 4822 to rotate within the housing 4821, thereby driving the connecting rod 483 and the sample protection part 470 to rotate.

[0090] The embodiments of the present invention employ the aforementioned magnetic transmission method, which has almost no impact on the vacuum level within the receiving device 100, achieving zero leakage. The rotating shaft 4822 does not contact the inner wall of the receiving device 100, transforming the dynamic seal for torque transmission into a static seal, ensuring reliable sealing performance. Furthermore, there is no motion friction between the seals at the rotating component mounting port 412, which not only improves the reliability of the seal but also eliminates frictional power consumption.

[0091] In some embodiments, the connecting rod 483 is slidably connected to the drive shaft 482 in the axial direction, so that the connecting rod 483 and the sample protection part 470 can move up and down to avoid the sample protection part 470 affecting the up and down movement of the sample collection part 430 above.

[0092] Specifically, such as Figure 9 As shown, the connecting rod 483 includes a first connecting rod 4831 and a second connecting rod 4832. The diameter of the first connecting rod 4831 is larger than the diameters of the second connecting rod 4832 and the rotating shaft 4822. The first connecting rod 4831 is hollow and has a central hole. The end of the rotating shaft 4822 away from the rotating drive member 481 is inserted into the central hole of the first connecting rod 4831, thereby connecting the rotating shaft 4822 and the connecting rod 483. Furthermore, the rotating shaft 4822 can slide up and down within the central hole, thereby enabling the connecting rod 483 to move up and down. The second connecting rod 4832 connects the first connecting rod 4831 and the sample protection part 470, thereby reducing the weight of the connecting rod 483.

[0093] Furthermore, the first connecting rod 4831 is provided with a lifting groove 4833, which communicates with the central hole. The transmission shaft 482 also includes a positioning part 4823, which is disposed at one end of the rotating shaft 4822 located in the central hole, and the positioning part 4823 matches the lifting groove 4833. The positioning part 4823 can slide up and down in the lifting groove 4833 and can restrict the rotation of the rotating shaft 4822 relative to the connecting rod 483. Specifically, the lifting groove 4833 is an elongated groove, the length of which is parallel to the axial direction of the rotating shaft 4822; the positioning part 4823 can be a positioning pin, used to restrict the rotation of the rotating shaft 4822 in the central hole, and can slide up and down in the lifting groove 4833 to realize the up and down movement of the connecting rod 483.

[0094] In this embodiment, the cooperation between the lifting slide 4833 and the positioning pin enables not only the connecting rod 483 to move up and down relative to the transmission shaft 482, but also the connecting rod 483 to rotate together with the rotating shaft.

[0095] In some embodiments, such as Figure 8 As shown, the lifting assembly 460 also includes a transmission connection part 490. One end of the transmission connection part 490 is fixed to the connecting rod 483, and the other end is rotatably connected to the sample collection cooling tube 420. When the sample collection cooling tube 420 moves up and down, it can drive the transmission connection part 490 and the connecting rod 483 to move up and down together. Furthermore, when the connecting rod 483 rotates, it can drive the transmission connection part 490 to rotate relative to the sample collection cooling tube 420, preventing the sample collection cooling tube 420 from restricting the rotation of the connecting rod 483.

[0096] In an embodiment of the present invention, when the lifting assembly 460 controls the sample collection part 430 to move up and down, the connecting rod 483 can be driven to move up and down relative to the transmission shaft 482 through the transmission connection part 490, thereby realizing the joint lifting of the sample protection part 470 and the sample collection part 430.

[0097] Specifically, the transmission connection part 490 includes a transmission connection part body and a rotation limiting block 492. One end of the transmission connection part body is fixedly connected to the connecting rod 483, and the other end is rotatably connected to the sample collection cooling pipe 420. The transmission connection part body is provided with a rotation limiting groove 491 that cooperates with the rotation limiting block 492. The rotation limiting groove 491 is located around the sample collection cooling pipe 420. The rotation limiting block 492 is fixedly connected to the sample collection cooling pipe 420 and is located within the rotation limiting groove 491.

[0098] In this embodiment, the rotation limiting block 492 cooperates with the rotation limiting groove 491. When the connecting rod 483 drives the sample protection part 470 to rotate, the main body of the transmission connection part rotates, so that the rotation limiting block 492 rotates relative to the rotation limiting groove 491 within the rotation limiting groove 491. The cooperation between the rotation limiting block 492 and the rotation limiting groove 491 limits the rotation range of the sample protection part 470, so that the sample protection part 470 rotates between the protection position and the avoidance position, avoiding excessive rotation from affecting other components in the receiving device 100.

[0099] See Figure 3 and Figure 4 In some embodiments, the measuring device 500 includes a measuring mounting tube 510, a measuring sensor 520, and a measuring cooling tube 530. The measuring mounting tube 510 is sealed to the receiving device 100, and a mounting space is formed inside the mounting tube, which communicates with the sealed chamber 110 of the receiving device 100. The measuring sensor 520 is disposed inside the measuring mounting tube 510 and is used to measure the evaporation rate of the sample. The measuring cooling tube 530 is disposed inside the measuring mounting tube 510 and connected to the measuring sensor 520. One end of the measuring cooling tube 530, away from the measuring sensor 520, extends outside the measuring mounting tube 510 and is connected to a coolant supply device 600. The coolant supply device 600 provides coolant to the measuring cooling tube 530, which is used to cool the measuring sensor 520 and prevent the high temperature inside the sealed chamber 110 from affecting the accurate measurement of the measuring sensor 520.

[0100] Specifically, one end of the measuring installation tube 510 is sealed to the containing device 100 via an ultra-high vacuum flange, and the other end of the measuring installation tube 510 is closed, thereby achieving the sealing of the containing device 100 and ensuring the vacuum level in the sealed chamber 110.

[0101] In some embodiments, the measuring sensor 520 is a film thickness gauge crystal oscillator probe, used for online measurement of the evaporation rate of the sample. In some embodiments, the film thickness gauge crystal oscillator probe can measure the sample thickness collected on the sample collection section 430 in real time, and obtain the evaporation rate of the sample based on the change in sample thickness, thereby realizing online measurement of the sample evaporation rate.

[0102] like Figure 3 and Figure 4As shown, in some embodiments, the measuring mounting tube 510 includes a second bellows 511 and a second sealing portion 512. One end of the second bellows 511 is connected to the receiving device 100, and the second bellows 511 is telescopic in its axial direction. The second sealing portion 512 is connected to the other end of the second bellows 511 away from the receiving device 100, and the second sealing portion 512 is used to seal the second bellows 511. A measuring cooling tube 530 passes through the second sealing portion 512 and is securely connected to it in a sealing manner. The end of the measuring cooling tube 530 away from the measuring sensor 520 extends to the outside of the second bellows 511 to connect with the coolant supply device 600, thereby providing circulating coolant to the measuring cooling tube 530.

[0103] In this embodiment, the measuring sensor 520 is installed in the retractable second corrugated tube 511. The measuring sensor 520 can be moved within the second corrugated tube 511 by the extension and retraction of the second corrugated tube 511. This allows the measuring sensor 520 to be moved into the sealed chamber 110 for measurement when in use, and to be housed in the second corrugated tube 511 when not in use.

[0104] like Figure 4 As shown, in some embodiments, a sensor connection portion 521 is provided on the second sealing portion 512. The sensor connection portion 521 passes through the second sealing portion 512 and is sealed to it. A sensor connection line 522 connects the measuring sensor 520 and the sensor connection portion 521. The sensor connection portion 521 is used to connect to the controller 800 outside the measuring mounting tube 510, thereby transmitting the measurement data of the measuring sensor 520 to the controller 800 via the sensor connection line 522 and the sensor connection portion 521.

[0105] See Figure 3 and Figure 4 In some embodiments, the measuring device 500 further includes a measuring movement assembly 540. The measuring movement assembly 540 is disposed outside the receiving device 100 and connected to the second sealing portion 512. The measuring movement assembly 540 drives the second sealing portion 512 to move axially along the second bellows 511, causing the second bellows 511 to extend and retract, and thus moving the measuring sensor 520 axially along the second bellows 511. The measuring sensor 520 is used to measure the evaporation rate of the sample when located within the sealed chamber 110.

[0106] In this embodiment, the measuring moving component 540 drives the second sealing part 512 to move, which in turn drives the second bellows 511 to extend and retract, and at the same time drives the measuring cooling pipe 530 fixedly connected to the second sealing part 512 to move, thereby driving the measuring sensor 520 to move inside the second bellows 511, so that it can extend into the sealed chamber 110 to measure the evaporation rate of the sample below during the heating process.

[0107] In some embodiments, the measuring movement component 540 has a similar structure to the lifting component 460. Specifically, as Figure 3 and Figure 4 As shown, the measuring moving assembly 540 includes a moving support 541, a moving drive unit 542, a moving lead screw 543, a moving guide rail 544, and a moving part 545.

[0108] The movable support base 541 is used to support and mount the movable drive unit 542, the movable lead screw 543, and the movable guide rail 544. The movable support base 541 includes at least a first mounting plate and a second mounting plate spaced apart, wherein the first mounting plate is vertically mounted on the support device 700 and is connected to the receiving device 100. For example, the first mounting plate is connected to the ultra-high vacuum flange connecting the measuring mounting tube 510 and the receiving device 100, thereby realizing the installation and positioning of the movable components.

[0109] In some embodiments, the movable support base 541 further includes two side plates, which are perpendicular to the support device 700 and connected between the first mounting plate and the second mounting plate. The two side plates are arranged opposite to each other and are used to fix the second mounting plate away from the receiving device 100.

[0110] like Figure 3 and Figure 4 As shown, the movable guide rail 544 is fixed between the first mounting plate and the second mounting plate, and the two ends of the movable lead screw 543 are rotatably connected to the first mounting plate and the second mounting plate. The movable part 545 is slidably connected to the movable guide rail 544, and the movable part 545 has a threaded hole that mates with the movable lead screw 543, which passes through the threaded hole. Optionally, there are two movable guide rails 544, with each of the two movable guide rails 544 respectively disposed on both sides of the movable lead screw 543.

[0111] In this embodiment, the moving part 545 is fixedly connected to the second sealing part 512 of the measuring mounting tube 510. Through the cooperation of the moving screw 543 and the threaded hole, when the moving screw 543 rotates, it can drive the moving part 545 to move along the moving guide rail 544, thereby driving the second sealing part 512 and the measuring cooling tube 530 to move along the axial direction of the second bellows 511, thereby realizing the extension and retraction of the second bellows 511.

[0112] Furthermore, the moving drive unit 542 is mounted on the side of the second mounting plate away from the receiving device 100, and the moving drive unit 542 is fixedly connected to the moving lead screw 543. When the moving drive unit 542 rotates, it can drive the moving lead screw 543 to rotate, thereby realizing the movement of the moving unit 545 along the axial direction of the second bellows 511. In some embodiments, the moving drive unit 542 is a manual rotating wheel, and the measuring sensor 520 can be moved back and forth by manually rotating the wheel.

[0113] like Figure 3 As shown, in some embodiments, the measuring cooling pipe 530 includes an inlet pipe 531 and an outlet pipe 532. The inlet pipe 531 and the outlet pipe 532 are connected and respectively connected to the coolant supply device 600. The coolant output from the coolant supply device 600 flows through the measuring sensor 520 via the inlet pipe 531 and then flows back to the coolant supply device 600 via the outlet pipe 532, thereby cooling the measuring sensor 520.

[0114] In some embodiments, the coolant supply device 600 includes a chiller and a water distributor. The input end of the water distributor is connected to the chiller, and the output end is connected to the sample collection cooling pipe 420 and the measurement cooling pipe 530, respectively, so as to deliver the cooling water output by the chiller to the sample collection cooling pipe 420 and the measurement cooling pipe 530, respectively. The chiller provides circulating cooling water to the sample collection cooling pipe 420 and the measurement cooling pipe 530 to ensure the cooling of the working environment of the sample collection device and the measurement device 500.

[0115] In addition, a cooling screen is installed in the sealed chamber 110. The cooling screen is located near the measuring sensor 520 and is used to absorb the radiation temperature of the heater 330 to prevent the measuring sensor 520 from being affected by the high temperature environment.

[0116] like Figure 1 As shown, in some embodiments, a controller 800 is also included, which is connected to the vacuum pumping device, the sample heating device 300, the measuring device 500, and the coolant supply device 600, respectively. This controller is used to control the vacuum pumping device, the sample heating device 300, and the coolant supply device 600, and to collect measurement data from the measuring device 500. In this embodiment, the controller 800 controls each device in the testing system and collects relevant data from each device, facilitating operation and monitoring of the testing process.

[0117] In some embodiments, the controller 800 is mounted within the housing space of the support device 700, thereby reducing the footprint of the test system.

[0118] Specifically, the controller 800 includes a sample heating control unit connected to the sample heating device 300, used to control the switching on and off of the sample heating device 300 and the heating temperature, and to collect temperature data of the sample heating device 300. The controller 800 also includes a measurement control unit, used to control the on and off of the measurement sensor 520, and to use the measurement data from the measurement sensor 520, such as the evaporation rate of the sample.

[0119] The controller 800 also includes a molecular pump control unit and an ion pump control unit, which are connected to the molecular pump 221 and the ion pump 231, respectively, and are used to control the switching of the molecular pump 221 and the ion pump 231. In addition, the controller 800 also includes a vacuum degree measurement control unit, which is connected to a vacuum degree measuring device and is used to collect vacuum degree data measured by the vacuum degree measuring device.

[0120] The material volatility characteristic testing system in this embodiment of the invention can be used to conduct volatility principle tests on high-temperature structural materials of space heat pipe reactors in ultra-high vacuum environments, and to test their volatility performance, which facilitates the analysis of the volatility characteristics of high-temperature structural materials under service conditions.

[0121] Regarding the embodiments of the present invention, it should also be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0122] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A material volatile property testing system, comprising: The application relates to a sample testing device. The device comprises: a containing device, the inside of which is formed with a sealed chamber for containing a sample to be tested; a vacuum pumping device connected with the containing device for providing a vacuum environment for the sealed chamber; a sample heating device detachably connected in the containing device for carrying and heating the sample; a sample cooling and collecting device arranged in the sealed chamber, which is located above the sample heating device for cooling and collecting the sample volatilized after heating; a measuring device sealingly connected with the containing device, which is used for measuring the volatilization rate of the sample during heating; the sample cooling and collecting device comprises a sample collecting part and a sample protecting part; the sample collecting part is used for collecting the sample volatilized after heating; 2. The system of claim 1, wherein, the sample protecting part is rotatably arranged below the sample collecting part; during heating of the sample, the sample protecting part is away from the sample collecting part; after the sample is heated, the sample protecting part is rotated to be directly below the sample collecting part for shielding the sample collecting part. The bottom of the containing device is provided with a heating device mounting port; the sample heating device comprises: a sealing connecting part which is detachably sealingly connected at the heating device mounting port for sealing the heating device mounting port; a sample carrying part arranged on the sealing connecting part and located in the sealed chamber, which is used for carrying the sample; 3. The system of claim 2, wherein, a heater connected between the sealing connecting part and the sample carrying part for heating the sample carrying part. The sealing connecting part is provided with a connecting hole; the sample heating device further comprises:

4. The system of claim 3, wherein, a temperature measuring part which is arranged in the connecting hole, one end of the temperature measuring part extending into the heater in the sealed chamber for measuring the heating temperature of the heater. The sample heating device further comprises:

5. The system of claim 4, wherein, a heat insulation part connected between the sealing connecting part and the heater for isolating the heater from the sealing connecting part. The heat insulation part comprises: a plurality of first heat insulation columns fixed on the sealing connecting part and uniformly distributed around the connecting hole; a heat insulation plate connected to the plurality of first heat insulation columns; 6. The system of claim 2, wherein, a plurality of second heat insulation columns connected between the heat insulation plate and the heater, and each second heat insulation column is arranged at a position between two adjacent first heat insulation columns. The sample heating device further comprises:

7. The system of claim 1, wherein, an insulating pad arranged between the sample carrying part and the heater for insulating the heater. The top of the containing device is provided with a collecting device mounting port; The sample cooling and collecting device further comprises: a sealing cover sealingly connected at the collecting device mounting port for sealing the collecting device mounting port; the sealing cover is provided with a through hole; a sample collecting and cooling pipe which is slidably arranged in the through hole of the sealing cover, one end of the sample collecting and cooling pipe extending into the sealed chamber, the sample collecting and cooling pipe being used for providing a circulating channel for a cooling agent. The sample collection part is connected to one end of the sample collection cooling tube located in the sealed chamber, and the sample collection cooling tube is used for cooling the sample collection part.

8. The system of claim 7, wherein, The sample cooling and collecting device further comprises: A first bellow is arranged outside the sealed chamber and is sleeved on the outside of the sample collection cooling tube, one end of the first bellow is fixedly connected to the through hole of the sealing cover; A first sealing part is connected to the other end of the first bellow away from the sealing cover, and the first sealing part is used for sealing the first bellow; The sample collection cooling tube and the first sealing part are sealingly and fixedly connected, and one end of the sample collection cooling tube away from the sample collection part extends to the outside of the first bellow.

9. The system of claim 8, wherein, The sample cooling and collecting device further comprises: A lifting assembly is located outside the sealed chamber, and the lifting assembly is arranged on the sealing cover; wherein the lifting assembly is connected with the first sealing part, the first bellow is telescopic along the axial direction, and the lifting assembly is used for driving the first sealing part to move up and down along the axial direction of the first bellow, so that the first bellow is telescopic and drives the sample collection cooling tube to move up and down.

10. The system of claim 9, wherein, The sample cooling and collecting device further comprises: A rotating assembly is fixed to the sealing cover and connected with the sample protection part, and is used for driving the sample protection part to rotate relative to the sample collection part.

11. The system of claim 10, wherein, The rotating assembly comprises: A rotating driving part is arranged outside the sealed chamber; A transmission shaft is connected with the rotating driving part, the rotating driving part is arranged to be rotatable to drive the transmission shaft to rotate; the transmission shaft penetrates through the sealing cover and extends into the sealed chamber, and the transmission shaft is sealingly connected with the sealing cover; A connecting rod is connected to one end of the transmission shaft away from the rotating driving part, and the sample protection part is connected to one end of the connecting rod away from the transmission shaft, and the transmission shaft is used for driving the connecting rod and the sample protection part to rotate.

12. The system of claim 11, wherein, The connecting rod is slidably connected to the transmission shaft along the axial direction; the lifting assembly further comprises: A transmission connecting part, one end of the transmission connecting part is fixed to the connecting rod, and the other end is rotatably connected to the sample collection cooling tube; when the sample collection cooling tube moves up and down, the transmission connecting part and the connecting rod move up and down.

13. The system of claim 7, wherein, Further comprising: A coolant supply device is connected with the coolant inlet and the coolant outlet of the sample collection cooling tube respectively, and is used for providing circulating coolant for the sample collection cooling tube.

14. The system of claim 13, wherein, The measuring device comprises: A measuring installation tube is sealingly connected with the containing device, and an installation space is formed in the installation tube, and the installation space is in communication with the sealed chamber of the containing device; A measuring sensor is arranged in the measuring installation tube, and is used for measuring the volatilization rate of the sample; A measurement cooling pipe is arranged in the measurement installation pipe and connected with the measurement sensor, and an end of the measurement cooling pipe away from the measurement sensor extends to outside of the measurement installation pipe and is connected with the coolant supply device for providing coolant for the measurement cooling pipe to cool the measurement sensor.

15. The system of claim 14, wherein, The measurement installation pipe comprises: A second bellows is connected with one end of the containing device, and is telescopic in the axial direction; A second sealing part is connected with the other end of the second bellows away from the containing device, and is used for sealing the second bellows; The measurement cooling pipe is sealingly and fixedly connected between the second sealing part, and an end of the measurement cooling pipe away from the measurement sensor extends to outside of the second bellows.

16. The system of claim 15, wherein, The measurement device further comprises: A measurement moving assembly is arranged outside the containing device and connected with the second sealing part, and is used for driving the second sealing part to move in the axial direction of the second bellows to make the second bellows telescopic and drive the measurement sensor to move in the axial direction of the second bellows; The measurement sensor is used for measuring the volatilization rate of the sample when located in the sealed chamber.

17. The system of claim 1, wherein, The containing device is provided with a plurality of connection ports; The vacuum air extraction device comprises: A plurality of vacuum pumps are respectively connected with the plurality of connection ports, and are used for providing a vacuum environment for the sealed chamber; A plurality of control valves are connected between the vacuum pumps and the connection ports, and are used for controlling the opening and closing of the air path between the vacuum pumps and the sealed chamber.

18. The system of claim 17, wherein, The plurality of connection ports comprise a mechanical pump connection port, a molecular pump connection port and an ion pump connection port; The plurality of vacuum pumps comprise: A mechanical pump is connected with the mechanical pump connection port, and is used for pre-vacuumizing the sealed chamber; A molecular pump is connected with the molecular pump connection port, and is used for vacuumizing the sealed chamber after pre-vacuumizing; An ion pump is connected with the ion pump connection port, and is used for vacuumizing the sealed chamber to an ultrahigh vacuum state.

19. The system of any one of claims 1-18, wherein, Further comprising: A controller is respectively connected with the vacuum air extraction device, the sample heating device, the measurement device and the coolant supply device, and is used for controlling the vacuum air extraction device, the sample heating device and the coolant supply device, and collecting the measurement data of the measurement device.

20. The system of claim 19, wherein, Further comprising: A support device is provided with a containing space, and the containing device is arranged on the support device, and the controller is installed in the containing space.

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