Anti-oxidation loading system

Abstract

The invention relates to the technical field of aviation sensor calibration equipment, and discloses an anti-oxidation loading system, which comprises a loading cavity, a heating module and an anti-oxidation module, and is characterized in that the loading cavity is provided with a first air inlet; the heating module is arranged in the loading cavity, and the heating module is used for heating the to-be-calibrated sensor; the anti-oxidation module comprises an inert gas source and a heating device, a gas inlet of the heating device is communicated with the inert gas source, and a gas outlet of the heating device is communicated with the first gas inlet. According to the invention, inert gas is output to the loading cavity, so that a heating device and a temperature measuring device are prevented from being oxidized at a high temperature, the heating device and the temperature measuring device are prevented from being damaged, the temperature upper limit space is effectively improved, the experimental temperature range is expanded, and the applicability and the temperature control capability of the system are enhanced; and the inert gas input into the loading cavity is preheated through the heating device, the reduced temperature of the inert gas after high-pressure output is compensated, the influence of the temperature of the inert gas on the temperature in the loading cavity is reduced, and the reliability of the calibration result is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of aviation sensor calibration equipment, and particularly relates to an antioxidant load-bearing system. Background Art

[0002] In the research and development process of aeroengines, high-temperature monitoring near the inlet of a gas turbine is crucial, which is directly related to the performance and safety of the engine. Taking a turboshaft engine as an example, an increase in temperature causes an increase in the gas flow velocity, which may lead to a deviation of the inlet air angle of attack of the turbine blade from the designed value, resulting in shock loss or boundary layer separation, reducing the turbine efficiency, and even causing fatigue failure of some structures.

[0003] To ensure the accuracy of high-temperature monitoring, it is necessary to calibrate high-temperature sensors. In a high-temperature environment, heating devices and temperature-measuring devices are prone to oxidation corrosion problems, which will seriously affect the service life and measurement accuracy of the temperature-measuring devices and heating devices. In related technologies, antioxidant effects are achieved by introducing inert gases, thereby protecting the samples in the calibration system.

[0004] However, when directly introducing inert gases, the temperature of the inert gases will cause temperature fluctuations in the load-bearing cavity, resulting in a decrease in the reliability of the calibration results. Summary of the Invention

[0005] In view of this, the present invention provides an antioxidant load-bearing system to solve the problem of the decrease in the reliability of calibration results caused by directly introducing inert gases.

[0006] The present invention provides an antioxidant load-bearing system, including a load-bearing cavity, a temperature-raising module, and an antioxidant module: the load-bearing cavity is provided with a first air inlet; the temperature-raising module is arranged in the load-bearing cavity, and the temperature-raising module is used to raise the temperature of the sensor to be calibrated; the antioxidant module includes an inert gas source and a heating device, the air inlet of the heating device is communicated with the inert gas source, and the air outlet of the heating device is communicated with the first air inlet.

[0007] Beneficial Effects: By outputting inert gases from the load-bearing cavity, oxidation of the heating device and the temperature-measuring device at high temperatures is prevented, damage to the heating device and the temperature-measuring device is avoided, the upper temperature limit space can be effectively increased, the experimental temperature range is expanded, and the applicability and temperature control ability of the system are enhanced; moreover, by preheating the inert gases input into the load-bearing cavity by the heating device, the temperature drop of the inert gases after being output at high pressure is compensated, the influence of the temperature of the inert gases on the temperature in the load-bearing cavity is reduced, and the reliability of the calibration results is ensured.

[0008] In an alternative embodiment, the heating module includes a heating block, which is heated by the irradiation of a laser light source. The heating block has an inner cavity for accommodating the sensor to be calibrated. In the above solution, the inner cavity of the heating block is used to accommodate the sensor to be calibrated, which can make the sensor to be calibrated in a relatively stable temperature environment. The heating block can play the role of heat conduction and heat homogenization. When the laser irradiates the heating block, the heat will be evenly conducted inside the heating block, so that the temperature distribution around the sensor to be calibrated in the inner cavity is uniform. The laser has the characteristic of concentrated energy. Using the laser light source to irradiate the heating block to achieve heating can transfer a large amount of energy to the heating block in a short time, so that it can be quickly heated. During the calibration process, by adjusting parameters such as the power and irradiation time of the laser light source, the heating rate and the final temperature of the heating block can be accurately controlled.

[0009] In an alternative embodiment, the heating block includes: an outer structure and an inner structure. The outer structure is provided with a first opening exposing the outer wall surface of the inner structure, and the laser light source directly irradiates the outer wall surface of the inner structure through the first opening.

[0010] Beneficial effects: The heating block adopts an inner and outer double-layer structure to provide a uniform and stable high-temperature environment and improve the accuracy in sensor performance monitoring. Specifically, the laser light source directly irradiates the outer wall surface of the inner structure through the first opening, so that the inner structure directly absorbs the laser energy and evenly transfers the heat to the sensor to be calibrated accommodated therein. Compared with the laser directly irradiating the entire heating block, this method can make the inner structure heat up faster, meet the need for quickly heating the sensor to be calibrated, and shorten the calibration cycle. The laser only acts on the inner structure, reducing the thermal influence on the outer structure. This means that some materials with good heat insulation and protection performance but weak laser absorption can be selected for the outer structure, so that heat can be isolated to a certain extent and heat dissipation can be reduced.

[0011] In an alternative embodiment, the thermal conductivity of the outer structure is less than that of the inner structure.

[0012] Beneficial effects: The inner structure has a high thermal conductivity and plays the role of forming a high-temperature cavity by heating. The outer structure has a low thermal conductivity and is less than that of the inner structure, playing the role of heat insulation and heat preservation for the inner structure. Through the setting of the outer structure, the influence of the external environmental temperature fluctuation on the temperature around the sensor is reduced. This enables the sensor to work in a relatively stable temperature environment, improves the stability of the calibration process, and reduces the interference of external factors on the calibration result.

[0013] In an alternative embodiment, the first opening has at least two symmetrically arranged.

[0014] Beneficial effects: By symmetrically arranging a plurality of first openings, local high temperatures caused by unilateral laser light source irradiation are avoided, so that a uniform temperature field is rapidly formed in the heat receiving block, thereby improving the calibration efficiency and the reliability of the calibration result.

[0015] In an optional embodiment, it further includes: a temperature measuring module for measuring the temperature inside the inner cavity.

[0016] In an optional embodiment, the temperature measuring module includes a thermocouple, a protective tube is sleeved outside the thermocouple, and the thermocouple extends from outside the load cavity and is placed in the inner cavity of the heat receiving block.

[0017] Beneficial effects: By extending the thermocouple into the inner cavity, the temperatures at different depths in the inner cavity can be measured, thereby ensuring that the temperature in the inner cavity is stable and uniform, and improving the reliability of the calibration result. The thermocouple and the protective tube are relatively independent of the main structures of the load cavity and the heat receiving block. When the thermocouple fails or the protective tube is damaged, maintenance personnel can replace them conveniently.

[0018] In an optional embodiment, a second air inlet is provided on the section of the protective tube exposed outside the load cavity, and an air flow channel is formed between the protective tube and the thermocouple. The air flow channel leads from the second air inlet to the head position where the thermocouple extends into the heat receiving block.

[0019] Beneficial effects: Inert gas enters the air flow channel between the protective tube and the thermocouple through the second air inlet and leads to the head position of the thermocouple, thereby realizing high-temperature protection of the thermocouple and preventing the thermocouple from being oxidized and damaged in a high-temperature environment. During the heating or cooling process, the temperature inside the inner cavity of the heat receiving block may fluctuate. When the temperature distribution inside the inner cavity of the heat receiving block is uneven, the flowing gas can take away or supplement heat, making the temperature around the head of the thermocouple more uniform and stable, and thus being able to play a certain buffering role and slowing down the influence of temperature fluctuations on the thermocouple.

[0020] In an optional embodiment, the load cavity is of an open structure, and the first air inlet is provided at a position close to the cavity opening of the load cavity.

[0021] Beneficial effects: The setting of the open structure provides a more convenient operation space for the operator. When placing or taking out the sensor to be calibrated, there is no need to pass through a narrow channel or a complex structure, and the sensor can be directly put into or taken out of the load cavity, and the operation is simpler and faster; the first air inlet is provided at a position close to the cavity opening of the load cavity, reducing the occurrence of eddy current phenomena and being able to better reduce the oxygen content inside the load cavity, improving the anti-oxidation effect.

[0022] In an alternative embodiment, the load cavity includes a receiving cavity and a buffer cavity. The buffer cavity communicates with the receiving cavity through a second opening. There are at least two second openings, at least one of the second openings is disposed at a position away from the cavity opening of the receiving cavity, and at least one of the second openings is disposed near the installation position of the laser light source.

[0023] Beneficial effects: By providing the buffer cavity, the gas input from the inert gas source is buffered and decelerated, reducing the influence of the gas flow rate on the temperature stability in the receiving cavity; the second opening is disposed away from the cavity opening of the receiving cavity. After the inert gas enters the receiving cavity through the second opening, it is convenient to extrude the oxygen in the receiving cavity; the second opening is disposed corresponding to the position of the laser light source. When the inert gas enters the receiving cavity through the second opening, an inert gas curtain is formed at the installation position of the laser light source, effectively preventing the entry of oxygen outside the receiving cavity and improving the antioxidant performance of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a front view of the antioxidant load system according to an embodiment of the present invention;

[0026] Figure 2 It is a top view of the antioxidant load system according to an embodiment of the present invention;

[0027] Figure 3 It is a side view of the antioxidant load system according to an embodiment of the present invention;

[0028] Figure 4 It is a schematic structural diagram of the antioxidant module according to an embodiment of the present invention;

[0029] Figure 5 It is a schematic system control diagram of the antioxidant load system according to an embodiment of the present invention;

[0030] Figure 6 It is a schematic overall structural diagram of the heating block according to an embodiment of the present invention;

[0031] Figure 7 It is an exploded structural diagram of the heating block according to an embodiment of the present invention;

[0032] Figure 8 It is an ANSYS simulation diagram after the load cavity inputs inert gas according to an embodiment of the present invention;

[0033] Figure 9 ANSYS simulation diagram after inert gas is input into the load cavity of Comparative Example 1;

[0034] Figure 10 ANSYS simulation diagram after inert gas is input into the load cavity of Comparative Example 2;

[0035] Figure 11 ANSYS simulation diagram of the load cavity of the embodiment of the present invention after a buffer cavity is provided.

[0036] Description of the reference numerals:

[0037] 10. Load cavity; 11. First air inlet; 12. Accommodating cavity; 13. Buffer cavity; 14. Second opening; 20. Laser light source; 30. Heating block; 31. Outer structure; 311. First opening; 312. Third opening; 32. Inner structure; 321. Inner cavity; 40. Antioxidant module; 41. Inert gas source; 42. Heating device; 43. Gas flow meter; 50. Temperature measurement module; 51. Thermocouple; 52. Protection tube; 521. Second air inlet; 53. Photoelectric thermometer; 60. Monitoring module. Detailed implementation manners

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] The following combines Figures 1 to 7 , and describes the embodiments of the present invention.

[0040] According to an embodiment of the present invention, an antioxidant load system is provided, including a load cavity 10, a temperature rising module, and an antioxidant module 40: the load cavity 10 is provided with a first air inlet 11; the temperature rising module is arranged in the load cavity 10 and is used to raise the temperature of the sensor to be calibrated; the antioxidant module 40 includes an inert gas source 41 and a heating device 42, the air inlet of the heating device 42 is communicated with the inert gas source 41, and the air outlet of the heating device 42 is communicated with the first air inlet 11.

[0041] Applying the antioxidant carrier system of this embodiment, by outputting inert gas to the carrier cavity 10, oxidation of the heating device and the temperature measuring device at high temperatures is prevented, damage to the heating device, the temperature measuring device and the sensor to be calibrated is avoided, the upper temperature limit space can be effectively increased, the temperature range of the experiment is expanded, and the applicability and temperature control ability of the system are enhanced; moreover, the heating device 42 pre-heats the inert gas input into the carrier cavity 10, compensates for the temperature drop of the inert gas after being output at high pressure, reduces the influence of the inert gas temperature on the temperature in the carrier cavity 10, and ensures the reliability of the calibration result.

[0042] Specifically, the inert gas source 41 in this embodiment is a nitrogen gas cylinder.

[0043] In other alternative embodiments, the inert gas can also be selected as chemically inactive gases such as helium and argon.

[0044] It should be noted that when the inert gas is output from the high-pressure gas tank, the temperature of the inert gas will decrease. This is because the gas does external work during the expansion process and fails to absorb heat from the outside world, resulting in a decrease in its internal energy and a drop in temperature. In the related art, the inert gas is directly introduced into the carrier cavity 10, ignoring the influence of the low temperature of the inert gas on the temperature in the carrier cavity 10, thereby causing fluctuations in the temperature in the carrier cavity 10 and reducing the reliability of the calibration result.

[0045] Therefore, in this embodiment, after the inert gas is output from the high-pressure gas tank, the heating device 42 first pre-heats the inert gas, compensates for the temperature drop of the inert gas after being output at high pressure, reduces the influence of the inert gas temperature on the temperature in the carrier cavity 10, and ensures the reliability of the calibration result.

[0046] It should be noted that in this embodiment, the heating device 42 can control the inert gas output from the inert gas source 41 to be heated to 350 °C.

[0047] In this embodiment, as Figure 1 shown, the temperature rising module includes a heat receiving block 30. The heat receiving block 30 is heated by the irradiation of the laser light source 20, and the heat receiving block 30 has an inner cavity 321 for accommodating the sensor to be calibrated.

[0048] Specifically, in this embodiment, the laser light source 20 is a high-power laser, and the high-power laser can be selected from semiconductor lasers, fiber lasers, solid lasers, gas lasers, chemical lasers, free electron lasers, etc.

[0049] Specifically, the inner cavity of the heating block 30 is used to accommodate the sensor to be calibrated, enabling the sensor to be in a relatively stable temperature environment. The heating block 30 can play the role of heat conduction and heat homogenization. When the laser irradiates the heating block 30, heat will be evenly conducted inside the heating block 30, making the temperature distribution around the sensor to be calibrated in the inner cavity uniform. The laser has the characteristic of concentrated energy. Using the laser light source 20 to irradiate the heating block to achieve temperature rise can transfer a large amount of energy to the heating block 30 in a short time, causing it to quickly heat up. During the calibration process, by adjusting parameters such as the power and irradiation time of the laser light source 20, the heating rate and final temperature of the heating block 30 can be precisely controlled.

[0050] Further, as Figure 6 and Figure 7 shown, the heating block 30 includes an outer structure 31 and an inner structure 32. The outer structure 31 is provided with a first opening 311 exposing the outer wall surface of the inner structure 32, and the laser light source 20 directly irradiates the outer wall surface of the inner structure 32 through the first opening 311. The heating block 30 adopts an inner and outer double-layer structure, providing a uniform and stable high-temperature environment and improving the accuracy in sensor performance monitoring.

[0051] Specifically, the above-mentioned inner cavity 321 is formed on the inner structure 32, and the outer structure 31 is further provided with a third opening 312 to facilitate the installation of the inner structure 32 and the exposure of the cavity opening of the inner cavity 321.

[0052] Specifically, the laser light source 20 irradiates the surface of the inner structure 32 to form a spot area, thereby forming a high-temperature cavity in the inner cavity 321 of the inner structure 32.

[0053] Specifically, the laser light source 20 directly irradiates the outer wall surface of the inner structure 32 through the first opening 311, enabling the inner structure 32 to directly absorb the laser energy and evenly transfer the heat to the sensor to be calibrated accommodated therein. Compared with directly irradiating the entire heating block 30 with the laser, this method can make the inner structure 32 heat up faster, meet the requirement of quickly heating the sensor to be calibrated, and shorten the calibration cycle. The laser only acts on the inner structure 32, reducing the thermal influence on the outer structure 31. This means that some materials with good heat insulation and protection performance but weak laser absorption can be selected for the outer structure 31, thereby isolating heat to a certain extent and reducing heat dissipation.

[0054] Further, the thermal conductivity coefficient of the outer structure 31 is less than that of the inner structure 32.

[0055] Specifically, the inner structure 32 is made of a material with a high thermal conductivity coefficient, playing the role of quickly heating up to form a high-temperature cavity; the outer structure 31 is made of a material with a low thermal conductivity coefficient, playing the role of heat insulation and heat preservation for the inner structure 32.

[0056] It should be noted that the materials of the inner structure 32 and the outer structure 31 can be selected as non-metallic materials, metallic materials, non-metallic and metallic composite materials, alloy materials, etc.

[0057] In this embodiment, as Figure 7 shown, there are two symmetrically arranged first openings 311. By symmetrically arranging a plurality of first openings 311, the local high temperature caused by unilateral laser light source 20 irradiation is avoided, so that a uniform temperature field is quickly formed in the heating block 30, improving the calibration efficiency and the reliability of the calibration result.

[0058] Specifically, please refer to Figure 2 , correspondingly, there are two laser light sources 20, and the two laser light sources 20 are arranged in one-to-one correspondence with the two first openings 311.

[0059] Of course, in other alternative embodiments, the number of the first openings 311 and the laser light sources 20 can also be selected as other numbers according to the actual situation, such as four, six, etc.

[0060] It should be noted that when the heating block 30 is irradiated by a unilateral laser light source 20, a significant temperature gradient will be formed in the inner cavity 321 of the heating block 30, resulting in inaccurate calibration results of the sensor to be calibrated under different temperature gradients. Therefore, the heating block 30 needs to be irradiated by symmetric laser light sources 20.

[0061] Furthermore, the first opening 311 is opened near the center of the outer wall surface of the inner structure 32, and the laser light sources 20 are arranged on two symmetric sides of the loading cavity 10. The laser irradiation height of the laser light sources 20 is consistent with the height of the first opening 311, so that the laser light sources 20 irradiate the center of the outer wall surface of the inner structure 32, and thus the temperature field formed in the inner cavity 321 is more uniform.

[0062] In this embodiment, the antioxidant loading system further includes a temperature measurement module 50 for measuring the temperature in the inner cavity 321.

[0063] Furthermore, as Figure 2 and Figure 3 shown, the temperature measurement module 50 includes a thermocouple 51, and a protection tube 52 is sleeved outside the thermocouple 51. The thermocouple 51 extends from outside the loading cavity 10 and is placed in the inner cavity 321 of the heating block 30. By extending the thermocouple 51 into the inner cavity 321, the temperature at different depths in the inner cavity 321 can be measured, thus ensuring that the temperature in the inner cavity 321 is stable and uniform, and improving the reliability of the calibration result; the protection tube 52 prevents the surface of the thermocouple 51 from being mechanically damaged and provides heat insulation protection for the thermocouple 51.

[0064] Specifically, please refer to Figure 2, the head of the thermocouple 51 extends out of the protective tube 52 and extends into the inner cavity 321 through the cavity opening of the loading cavity 10 to detect the temperature at different depths in the inner cavity 321.

[0065] It should be noted that the thermocouple 51 can be selected as the K-type thermocouple 51, B-type thermocouple 51, C-type thermocouple 51, etc. according to actual needs.

[0066] It is worth noting that the thermocouple 51 and the protective tube 52 are relatively independent of the main structures of the loading cavity 10 and the heating block 30. When the thermocouple 51 fails or the protective tube 52 is damaged, maintenance personnel can replace them conveniently.

[0067] Furthermore, as Figure 5 shown, the temperature measurement module 50 further includes a photoelectric thermometer 53. A bottom wall is formed in the inner cavity 321 corresponding to its cavity opening, and the detection part of the photoelectric thermometer 53 is arranged facing the bottom wall to facilitate measuring the temperature of the bottom wall.

[0068] It is worth noting that through the measurement results of the photoelectric thermometer 53 and the thermocouple 51, precise monitoring of the temperature in the inner cavity 321 can be achieved.

[0069] Furthermore, as Figure 3 shown, a second air inlet 521 is provided on the section of the protective tube 52 exposed outside the loading cavity 10. An air flow channel is formed between the protective tube 52 and the thermocouple 51, and the air flow channel leads from the second air inlet 521 to the head position where the thermocouple 51 extends into the heating block 30. The inert gas enters the air flow channel between the protective tube 52 and the thermocouple 51 from the second air inlet 521 and leads to the head position of the thermocouple 51, thereby realizing high-temperature protection for the thermocouple 51.

[0070] Specifically, the inert gas source 41 is communicated with the second air inlet 521 to supply inert gas to the air flow channel between the protective tube 52 and the thermocouple 51, thereby squeezing out the oxygen between the protective tube 52 and the thermocouple 51 and preventing the thermocouple 51 from being oxidized and damaged in a high-temperature environment.

[0071] It is worth noting that during the heating or cooling process, the temperature in the inner cavity of the heating block 30 may fluctuate. When the temperature distribution in the inner cavity of the heating block 30 is uneven, the flowing gas can take away or supplement heat, making the temperature around the head of the thermocouple 51 more uniform and stable, thereby being able to play a certain buffering role and slowing down the influence of temperature fluctuations on the thermocouple 51.

[0072] In this embodiment, as Figure 4 shown, the antioxidant module 40 further includes a gas flow meter 43. The gas flow meter 43 is arranged between the first air inlet 11 and the air outlet of the heating device 42 to facilitate obtaining the flow rate of the inert gas.

[0073] Further, the nitrogen gas cylinder is provided with a control valve. While adjusting the opening degree of the control valve, observe the numerical change on the gas flow meter 43 to facilitate input of the target flow rate.

[0074] In this embodiment, the gas density of the inert gas source 41 is lower than that of air. As Figure 1 shown, the first air inlet 11 is arranged on the top side of the loading cavity 10.

[0075] It should be noted that, according to the gas density of different inert gas sources 41, select the installation position of the first air inlet 11 to ensure that the inert gas can fully extrude the oxygen in the loading cavity 10, reduce the oxygen content in the loading cavity 10, and further improve the anti-oxidation effect on the heating device and the temperature measuring device.

[0076] In this embodiment, as Figure 5 shown, the anti-oxidation loading system further includes a monitoring module 60. The monitoring module 60 is electrically connected to the temperature measuring module 50 to obtain the temperature parameters in the inner cavity 321; the monitoring module 60 is electrically connected to the laser light source 20 to adjust the optical pulse and precisely control the optical power to ensure the accuracy of the laser pulse rise time and temperature regulation.

[0077] Specifically, the host of the monitoring module 60 receives the temperature parameter information from the thermocouple 51 and the photoelectric pyrometer 53, and performs synchronous feedback control on the laser light source 20, etc.

[0078] In this embodiment, as Figure 1 and 2 shown, the loading cavity 10 includes a containing cavity 12 and a buffer cavity 13. The containing cavity 12 is an open structure. The first air inlet 11 is arranged near the opening of the containing cavity 12. The heating module is arranged in the containing cavity 12. The air inlet end of the buffer cavity 13 is communicated with the first air inlet 11, and the air outlet end of the buffer cavity 13 is communicated with the containing cavity 12 through a second opening 14. There are three second openings 14. One of the second openings 14 is arranged away from the opening of the containing cavity 12, and the other two second openings 14 are respectively arranged corresponding to the installation positions of one laser light source 20. By providing the buffer cavity 13, buffer and decelerate the gas input from the inert gas source 41 to reduce the influence of the gas flow rate on the temperature stability in the containing cavity 12; specifically, please refer to Figure 2, The inert gas enters the buffer chamber 13 from the first air inlet 11, moves towards the second opening 14 away from the orifice of the accommodation chamber 12, and finally moves into the accommodation chamber 12 through the second opening 14. The inert gas moves from the left side to the right side in the figure, so as to gradually squeeze out the oxygen in the accommodation chamber 12 and improve the antioxidant performance of the system; the second opening 14 is arranged corresponding to the position of the laser light source 20. When the inert gas enters the accommodation chamber 12 from the second opening 14, an inert gas curtain is formed at the orifice position of the accommodation chamber 12 and the installation position of the laser light source 20, effectively preventing the entry of oxygen outside the accommodation chamber 12 and improving the antioxidant performance of the system.

[0079] It should be noted that the open structure provides a more convenient operation space for the operator. When placing or removing the sensor to be calibrated, there is no need to pass through a narrow channel or complex structure, and the sensor can be directly placed into or removed from the loading chamber 10, and the operation is simpler and faster.

[0080] Specifically, the buffer chamber 13 is arranged on the top side of the accommodation chamber 12. Nitrogen first enters the buffer chamber 13 from the first air inlet 11, and then enters the accommodation chamber 12 from the buffer chamber 13, so as to decelerate the nitrogen and reduce the influence of the gas flow rate on the temperature stability.

[0081] Furthermore, the number and position of the first air inlets 11 are set in one-to-one correspondence with the number and position of the second openings 14, that is, a first air inlet 11 is arranged corresponding to each opening of the second opening 14 to ensure the formation of the inert gas film and the antioxidant performance of the system.

[0082] It should be noted that in other alternative embodiments, the number of the second openings 14 can be selected according to the actual situation. For example, only one second opening 14 can be arranged corresponding to the orifice of the accommodation chamber 12, or only one second opening 14 can be arranged corresponding to the position of the laser light source 20, etc.

[0083] Furthermore, the nitrogen can be reheated at the buffer chamber 13, so as to further reduce the influence of the inert gas on the temperature stability in the loading chamber 10.

[0084] It should be noted that in other alternative embodiments, if the gas density of the inert gas source 41 is higher than that of air, the first air inlet 11 is arranged at the bottom side of the loading chamber 10, and the buffer chamber 13 is arranged at the bottom side of the accommodation chamber 12.

[0085] It should be noted that in other alternative embodiments, the loading chamber 10 can also be a single-chamber structure, and the inert gas directly enters the cavity of the loading chamber 10 from the first air inlet 11.

[0086] It should be noted that the ANSYS finite element simulation software was used to separately simulate and analyze the first air inlet 11 and the loading cavity 10 with the open end set at different positions to explore the distribution of inert gas and oxygen.

[0087] Specifically, in this embodiment, the loading cavity 10 has a single-sided open structure, and the first air inlet 11 is arranged at a position close to the open end of the loading cavity 10; in Comparative Example 1, the loading cavity 10 has a single-sided open structure, and the first air inlet 11 is arranged at a position far from the open end of the loading cavity 10; in Comparative Example 2, the loading cavity 10 has a double-sided open structure, and the first air inlet 11 is arranged near each of the two cavity openings.

[0088] Specifically, the ANSYS simulation results of the loading cavity 10 after inputting inert gas are as Figures 8 to 10 shown. In the simulation diagram, the blue area represents oxygen, and the red area represents inert gas. Please refer to Figure 8 , the oxygen content in the loading cavity 10 is relatively low; please refer to Figure 9 , there is still a large amount of oxygen mixture in the loading cavity 10 in Comparative Example 1; please refer to Figure 10 , there is a large amount of oxygen in the loading cavity 10 in Comparative Example 2, and an obvious eddy current phenomenon is formed.

[0089] The analysis results show that compared with Comparative Example 1 and Comparative Example 2, the oxygen content in the inner cavity 321 of this embodiment is relatively low. Therefore, in this embodiment, by arranging the first air inlet 11 at a position close to the cavity opening of the loading cavity 10, the occurrence of eddy current phenomenon is reduced, and the oxygen content inside the loading cavity 10 can be better reduced, improving the anti-oxidation effect.

[0090] Furthermore, the ANSYS finite element simulation software was used to simulate and analyze the loading cavity 10 provided with the buffer cavity 13 in this embodiment to further explore the distribution of inert gas and oxygen.

[0091] The analysis results show that, please refer to Figure 11 , the inside of the loading cavity 10 is almost in an oxygen-free environment. It can be seen that the setting of the buffer cavity 13 further reduces the oxygen content inside the loading cavity 10 and further improves the anti-oxidation effect of the system.

[0092] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the present invention.

Claims

1. An antioxidant carrier system, characterized in that, Comprising: A loading cavity (10), the loading cavity (10) being provided with a first air inlet (11); A temperature-raising module, arranged inside the loading cavity (10), the temperature-raising module being used to raise the temperature of the sensor to be calibrated; An antioxidant module (40), the antioxidant module (40) comprising an inert gas source (41) and a heating device (42), the air inlet of the heating device (42) being communicated with the inert gas source (41), and the air outlet of the heating device (42) being communicated with the first air inlet (11).

2. The antioxidant carrier system according to claim 1, wherein The temperature-raising module comprises a heat-receiving block (30), the heat-receiving block (30) being heated by the irradiation of a laser light source (20), and the heat-receiving block (30) having an inner cavity (321) for accommodating the sensor to be calibrated.

3. The antioxidant carrier system according to claim 2, wherein The heat-receiving block (30) comprises: an outer layer structure (31) and an inner layer structure (32), a first opening (311) exposing the outer wall surface of the inner layer structure (32) being formed on the outer layer structure (31), and the laser light source (20) directly irradiating on the outer wall surface of the inner layer structure (32) through the first opening (311).

4. The antioxidant carrier system according to claim 3, wherein The heat conduction coefficient of the outer layer structure (31) is less than that of the inner layer structure (32).

5. The antioxidant carrier system according to claim 3, characterized in that, There are at least two first openings (311) symmetrically arranged.

6. The antioxidant carrier system according to any one of claims 2-5, characterized in that, Further comprising: A temperature-measuring module (50), used to measure the temperature inside the inner cavity (321).

7. The antioxidant carrier system according to claim 6, characterized in that, The temperature-measuring module (50) comprises a thermocouple (51), a protection tube (52) being sleeved outside the thermocouple (51), and the thermocouple (51) extending from outside the loading cavity (10) and being placed inside the inner cavity (321) of the heat-receiving block (30).

8. The antioxidant carrier system according to claim 7, characterized in that, A second air inlet (521) is arranged on the section of the protection tube (52) exposed outside the loading cavity (10), and an air flow channel is formed between the protection tube (52) and the thermocouple (51), the air flow channel leading from the second air inlet (521) to the head position where the thermocouple (51) extends into the inside of the heat-receiving block (30).

9. The antioxidant carrier system according to any one of claims 2-5, characterized in that, The loading cavity (10) is of an open structure, and the first air inlet (11) is arranged at a position close to the cavity opening of the loading cavity (10).

10. The antioxidant carrier system according to claim 9, wherein, The loading cavity comprises a containing cavity (12) and a buffer cavity (13), the buffer cavity (13) being communicated with the containing cavity (12) through a second opening (14), there being at least two second openings (14), at least one of the second openings (14) being arranged at a position far from the cavity opening of the containing cavity (12), and at least one of the second openings (14) being arranged at a position close to the installation position of the laser light source (20).

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