Station large-space temperature sensor heat shielding cover based on 3D printing

Abstract

The utility model relates to the technical field of large-space temperature detection, and provides a station large-space temperature sensor heat shielding cover based on 3D printing, which comprises a cover body, an air supply assembly and a turbulent flow assembly, flow baffles are symmetrically arranged in the cover body, the flow baffles and the inner wall of the cover body are matched to form an airflow channel, an air inlet penetrates through the cover wall, close to one side of the middle of the cover body, in the airflow channel, and an exhaust hole penetrates through the cover wall, away from one end of the air inlet, of the airflow channel; the air supply assembly comprises a fan which is arranged on the side wall, close to the inner side of the cover body, of the air inlet, and a temperature sensor is arranged on a cover body bottom plate on the side, away from the air inlet, of the fan. The turbulent flow assembly is arranged between the fan and the temperature sensor and comprises a flow guide body and a turbulent flow body, the flow guide body is used for making contact with airflow generated by the fan and guiding the airflow to the turbulent flow body, and the turbulent flow body is arranged between the flow guide body and the temperature sensor. The temperature sensor is simple in structure and low in cost, and the measurement error of the temperature sensor can be greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of large space temperature detection technology, specifically to a heat shield for a large space temperature sensor in a railway station based on 3D printing. Background Technology

[0002] Air conditioning energy consumption is one of the most important components of the overall energy consumption of the high-speed rail system, and also one of the most important research subjects for achieving the ambitious dual-carbon goals in the transportation sector. To minimize the energy consumption of air conditioning systems, digitalization and intelligentization have become core approaches and strategies in this field in recent years. By acquiring information such as temperature, humidity, passenger flow, equipment, and energy consumption through IoT systems, combined with AI algorithms, dynamic adjustments are made. Digital twin technologies are used to reconstruct the environment and energy consumption, enabling precise temperature control of air conditioning zones and linking with the ventilation system for airflow organization. Remote monitoring and fault diagnosis are possible, achieving energy conservation and emission reduction, and improving passenger comfort and station operational efficiency. The core and key to achieving these goals is accurate data measurement. For air conditioning systems, temperature is the most fundamental data to be measured. To achieve precise zoning control and comfort adjustment, a large number of temperature sensors need to be deployed within a station. Accurate measurement becomes the basic guarantee for achieving the digital goals of air conditioning. However, unlike ordinary buildings, high-speed rail stations have high ceilings, large building scale, and relatively open spaces. The station envelope exchanges heat with the outdoor environment and the sun for a long time, resulting in a large temperature difference between the station's exterior and interior. The maximum temperature difference can reach over 40℃. When using sensors to measure temperature in the large space of a station, the temperature measurement will inevitably be affected by the thermal radiation of the enclosure structure, resulting in inaccurate temperature measurements.

[0003] Meanwhile, the thermal equilibrium process measured by the temperature sensor in the large space was analyzed: the radiative heat transfer between the building envelope and the temperature sensor was... The convective heat transfer between the temperature sensor and the surrounding air is When the above two values ​​are equal, the temperature sensor measurement is stable. As the above analysis shows, to reduce measurement error, one can reduce the emissivity of the temperature sensor or increase the convective heat transfer coefficient. Currently, increasing the convective heat transfer coefficient or using a heat shield around the sensor probe is a key approach to solving these problems. Excellent heat shield design is a direction for technological research and development in the industry. However, general heat shields are complex in structure, heavy, and expensive. In high-speed rail stations, temperature sensors are usually placed on walls or columns. General heat shield structures cannot be applied to the temperature sensor measurement process in high-speed rail stations. To achieve good error control, expensive materials and complex structures, such as vacuum systems, are required. These solutions are not suitable for temperature measurement in high-speed rail stations.

[0004] Therefore, to address the above problems, a heat shield based on 3D printing for temperature sensors in large station spaces is proposed to solve the problem of radiation-induced errors in temperature measurement in large station spaces. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by developing a 3D-printed heat shield for temperature sensors in large-space stations. This invention features a simple structure, low cost, high safety, and can significantly reduce the measurement error of temperature sensors.

[0006] To achieve the above objectives, this utility model employs the following technical solution:

[0007] A 3D-printed heat shield for temperature sensors in a large station space includes: a shield body, an air supply assembly, and a turbulence evacuation assembly;

[0008] The baffles are symmetrically arranged inside the cover. The baffles and the inner wall of the cover cooperate to form an airflow channel. An air inlet is opened through the cover wall on the side of the airflow channel near the middle of the cover. An exhaust hole is opened through the cover wall on the side of the airflow channel away from the air inlet.

[0009] The air supply assembly includes a fan, which is installed on the side wall of the cover near the air inlet. A temperature sensor is installed on the bottom plate of the cover on the side away from the air inlet to detect the temperature of the airflow.

[0010] The turbulence-disrupting component is positioned between the fan and the temperature sensor and includes a guide fluid and a turbulence-disrupting fluid. The guide fluid is used to contact the airflow generated by the fan and direct it to the turbulence-disrupting fluid, while the turbulence-disrupting fluid is positioned between the guide fluid and the temperature sensor to disrupt the airflow.

[0011] Preferably, the enclosure is made of 3D-printed silicone material capable of deformation, and is installed on the surface of the station's wall or column components via a connecting structure.

[0012] Preferably, two baffles are symmetrically arranged inside the cover. The end of the baffle near the air inlet is connected to the inner wall of the cover on that side, and the end of the baffle away from the air inlet has a gap with the inner wall of the cover on that side.

[0013] Preferably, the air inlet and exhaust outlet are located at opposite ends of the cover, and the airflow channel inside the cover is an axisymmetric L-shape.

[0014] Preferably, the air inlet and exhaust outlet are located at the same end of the cover, and the airflow channel inside the cover is U-shaped with axial symmetry.

[0015] Preferably, baffles are provided on the side of the cover where the baffles are far apart from each other. The end of the baffles away from the air inlet is connected to the inner wall of the cover on that side. The end of the baffles near the air inlet has a gap with the inner wall of the cover on that side. The airflow channel inside the cover is S-shaped with axial symmetry.

[0016] Preferably, both the inner and outer surfaces of the cover are coated with heat-insulating material.

[0017] Preferably, the air supply assembly also includes a power component and a transmission mechanism. The power component is housed in a cover on the side of the baffle plate away from the turbulence component. The output end of the power component is connected to a fan through a transmission mechanism that passes through the baffle plate, and is used to drive the fan to rotate.

[0018] Preferably, the turbulent fluid is a cylinder with its axis located on the central surface between the two baffles; two temperature sensors are provided, symmetrically arranged on the bottom plate of the cover on the side away from the turbulent fluid with respect to the central surface between the baffles; two guide fluids are provided, symmetrically arranged on the side plates of the baffles that are close to each other with respect to the central surface between the baffles, and the cross-section of the guide fluid is a right triangle, with the extension of the hypotenuse of the triangle passing through the turbulent fluid and its opposite temperature sensor.

[0019] Preferably, it also includes a wind speed control component, which is installed inside the enclosure and is symmetrical to the position of the power component of the air supply component about the center plane between the baffles. The wind speed control component is connected to the power supply, temperature sensor and power component.

[0020] The effects provided in the utility model description are merely those of the embodiments, and not all the effects of the utility model. The above technical solution has the following advantages:

[0021] 1. This utility model uses 3D printed silicone as the main material of the cover. The inherent flexibility and deformability of silicone material enable the heat shield to perfectly fit different geometric surfaces commonly found in stations, such as flat walls or curved columns. By selecting a suitable hardness, sufficient deformation capacity is achieved while ensuring the structural support strength.

[0022] 2. This utility model achieves rapid and secure installation on various complex surfaces through the bonding method of strong adhesive, without the need for customized special mounting brackets, which greatly reduces the difficulty and cost of installation; at the same time, the silicone material has low density, light weight and soft texture, so even if it falls off accidentally, the risk of impact and injury to passengers below is low, which greatly improves the safety of its application in public spaces.

[0023] 3. This utility model constructs an active air supply structure by building a built-in fan, which enables the temperature sensor to continuously detect new airflow and improve the accuracy of temperature detection.

[0024] 4. This utility model physically isolates the heat-generating components such as motors from the air intake channel and the core detection area through baffles, and quickly dissipates the heat of the power components through airflow channels of a specific shape, thereby fundamentally avoiding the direct impact of heat sources on the intake airflow and ensuring the originality of the detection airflow.

[0025] 5. This utility model forms a regular and controllable airflow channel through symmetrically arranged baffles, guiding the external air to flow along a predetermined path, thus avoiding the formation of localized hot zones due to turbulent or stagnant airflow inside the enclosure.

[0026] 6. By setting up a guide fluid and a turbulent fluid, this utility model can efficiently convert laminar airflow into turbulent flow. This turbulence ensures sufficient and rapid heat exchange between the airflow and the sensing element of the temperature sensor, enabling the sensor to quickly respond to the true temperature of the airflow, reducing measurement lag and errors, and improving the accuracy of detection. Attached Figure Description

[0027] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0028] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0029] Figure 2 This is a schematic diagram of the internal structure of the top plate of the overall removed cover in an embodiment of this utility model.

[0030] Figure 3 This is a top view of the S-shaped airflow channel according to an embodiment of the present invention.

[0031] Figure 4 This is a schematic diagram showing the connection between the air inlet and the transmission mechanism in an embodiment of the present invention;

[0032] Figure 5 This is a top view of the L-shaped airflow channel according to an embodiment of the present invention.

[0033] Figure 6 This is a top view of the U-shaped airflow channel according to an embodiment of the present invention.

[0034] Figure 7 This is a schematic diagram of the turbulence intensity distribution of the undisturbed component in an embodiment of this utility model;

[0035] Figure 8 This is a schematic diagram of the turbulence intensity distribution with turbulence-disrupting components in an embodiment of this utility model.

[0036] In the diagram, 1. Cover; 2. Air supply assembly; 3. Baffle assembly; 4. Baffle; 5. Airflow channel; 6. Air inlet; 7. Exhaust outlet; 8. Temperature sensor; 9. Wind speed control assembly; 21. Fan; 22. Power component; 23. Transmission mechanism; 31. Guide fluid; 32. Baffle fluid; 41. Baffle one; 42. Baffle two. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] like Figures 1-6 As shown, this utility model provides a technical solution:

[0039] A heat shield for a large-space temperature sensor 8 in a railway station based on 3D printing includes: a shield body 1, an air supply assembly 2, and a turbulence-disrupting assembly 3; the shield body 1 includes a base plate, side walls, and a top plate, with baffles 4 symmetrically arranged inside the shield body 1, forming an airflow channel 5 between the baffles 4 and the inner wall of the shield body 1; an air inlet 6 is formed through the shield wall near the middle of the shield body 1 within the airflow channel 5, and an exhaust vent 7 is formed through the shield wall at the end of the airflow channel 5 away from the air inlet 6; the air supply assembly 2 includes a fan 21, which is disposed at the air inlet 6. A temperature sensor 8 is installed on the side wall of the cover 1 near the inner side of the cover 1, on the bottom plate of the cover 1 on the side of the fan 21 away from the air inlet 6, for detecting the temperature of the airflow; the turbulence assembly 3 is installed between the fan 21 and the temperature sensor 8, including a guide fluid 31 and a turbulence fluid 32. The guide fluid 31 is used to contact the airflow generated by the fan 21 and guide it to the turbulence fluid 32. The turbulence fluid 32 is installed between the guide fluid 31 and the temperature sensor 8 to turbulent the airflow and allow the turbulent airflow to contact the temperature sensor 8.

[0040] In an optional embodiment, the cover 1 is made of 3D-printed, deformable silicone material and is set on the surface of the station wall or column components through a connecting structure. The use of 3D printing technology makes the cover more integral and allows control circuit wires to be embedded inside the material, resulting in lower costs. At the same time, compared with mold forming, it is easier to adjust the size and shape of the cover, improving its aesthetics when used in the station. The connecting structure can be made of strong adhesive. Utilizing the deformable properties of silicone, the cover 1 can be attached to the plane and column surfaces through adhesive bonding, thereby achieving the fixation of the heat shield. Although the overall strength of silicone is lower than that of metal parts, the overall load of the heat shield is smaller. Among the silicones of different hardnesses on the market, silicone with a hardness of about 50 degrees can meet the dual requirements of load and deformation. When installed close to the surface of the column, the thickness of the base plate of the shield 1 meets the requirement that the outer side deforms while the inner side does not. Moreover, the overall size of the shield 1 is smaller than that of the high-speed rail station column. After the shield 1 is attached to the column, the curvature is generally less than 3 degrees, so the deformation is minimal and will not affect the positional relationship of the internal structure of the shield 1.

[0041] In addition, compared with metal materials, silicone material has a lower density and is relatively soft, reducing the potential harm to passengers if the heat shield may fall off; 3D printing technology can make the heat shield into any shape, ensuring that the heat shield is both beautiful and practical.

[0042] In an optional embodiment, two baffles 41 are symmetrically arranged inside the cover 1. The end of the baffle 41 near the air inlet 6 is connected to the inner wall of the cover 1 on that side, and the end of the baffle 41 away from the air inlet 6 has a gap between it and the inner wall of the cover 1 on that side, so that airflow can pass through and guide the airflow path to prevent the airflow from running around inside the cover 1.

[0043] In an optional embodiment, the air supply assembly 2 further includes a power component 22 and a transmission mechanism 23. The power component 22 is a motor and is disposed in the cover 1 on the side of the baffle plate 41 away from the turbulence assembly 3. The output end of the power component 22 is connected to the fan 21 through the transmission mechanism 23 that passes through the baffle plate 41, so as to drive the fan 21 to rotate.

[0044] In an optional embodiment, the transmission mechanism 23 includes a drive shaft, which is coaxially disposed at the output end of the power component 22. The drive shaft rotates through a nearby baffle plate 41 and is then coaxially disposed with a drive gear. The drive gear meshes with a driven gear. Preferably, both the drive gear and the driven gear are bevel gears to change the direction of rotation. A passive shaft is coaxially disposed on the driven gear. One end of the passive shaft is coaxially disposed with a fan 21, and the other end of the passive shaft is disposed on the wall of the cover 1 on one side of the air inlet 6 via a bearing. More preferably, a bearing bracket is disposed inside the air inlet 6 to support the bearing, and sufficient clearance for air intake is left between the bearing bracket and the inner wall of the air inlet 6. Figure 3 As shown. By separating the power component 22 from the fan 21, the thermal interference of the power component 22 is reduced, and the problem of inaccurate temperature detection caused by the air drawn in by the fan 21 coming into contact with the heated power component 22 is avoided, thus improving the accuracy of temperature detection.

[0045] In an optional embodiment, a wind speed control component 9 is also included, which is disposed inside the cover 1 and is symmetrical with respect to the center plane between the baffle plate 41 and the power component 22 of the air supply component 2 to balance the center of gravity of the heat shield. The wind speed control component 9 is connected to the power supply, temperature sensor 8 and power component 22 and is used to control the wind speed of the fan 21.

[0046] The fan speed control component 9 includes a chip for controlling the rotational speed of fan 21. The chip collects real-time data from temperature sensor 8 to determine a critical speed at which the error of temperature sensor 8 does not significantly change. The critical speed is determined as follows: a PWM voltage signal is provided via pin 18 of an STM32 microcontroller, connected to the ENA interface of an L298N driver board, to control the speed of the power unit 22. Simultaneously, the rotational speed of the power unit 22 is gradually increased at the start of measurement, while temperature measurement data is received. When the temperature change is less than 1% as the rotational speed increases, this speed is considered the critical speed, and the fan speed is no longer increased. This design ensures the most reasonable fan speed while reducing energy consumption.

[0047] In an optional embodiment, the air inlet 6 and the exhaust port 7 are located at the two ends of the cover 1, and the airflow channels 5 on both sides inside the cover 1 are axially symmetrical L-shaped, which can quickly draw out the airflow.

[0048] In an optional embodiment, the air inlet 6 and the exhaust 7 are both located at the same end of the cover 1. The airflow channels 5 on both sides inside the cover 1 are U-shaped with axisymmetric design, which facilitates the synchronous cooling of the power component 22 and the wind speed control component 9 to avoid excessive local temperature inside the cover 1, which may also affect the accuracy of temperature detection.

[0049] In an optional embodiment, baffles 42 are provided in the cover 1 on the side of the baffles 41 that are far apart from each other. The end of the baffles 42 that is far away from the air inlet 6 is connected to the inner wall of the cover 1 on that side. The end of the baffles 42 that is close to the air inlet 6 is left with a gap between it and the inner wall of the cover 1 on that side. The airflow channel 5 in the cover 1 is axially symmetrical S-shaped to avoid the situation where the air inlet 6 may contain part of the air discharged from the exhaust port 7 when the air inlet 6 and the exhaust port 7 are located at the same end of the cover 1, thereby improving the accuracy of temperature detection.

[0050] Among them, the first baffle plate 41 and the second baffle plate 42 can be integrally formed with the cover 1, or they can be assembled or glued together, which does not affect the effect of this utility model.

[0051] In an optional embodiment, the inner and outer surfaces of the cover 1 are coated with heat insulation material, such as nano-ceramic coating, aerogel coating or fluorocarbon coating, like IOTA ST6 superhydrophobic nano-ceramic coating, water-based fluorocarbon aerogel heat insulation coating, fluorocarbon coating, etc., to reduce the thermal reflectivity of the cover 1 itself and improve the heat shielding effect.

[0052] In an optional embodiment, the turbulence 32 is configured as a cylinder with its axis located on the central plane between the two baffles 41; two temperature sensors 8 are configured symmetrically about the central plane between the baffles 41 on the bottom plate of the cover 1 on the side of the turbulence 32 away from the guide fluid 31; two guide fluids 31 are configured symmetrically about the central plane between the baffles 41 on the side plates of the baffles 41 that are close to each other, and the cross-section of the guide fluid 31 is a right triangle, with the extension of the hypotenuse of the triangle passing through the turbulence 32 and its opposite temperature sensor 8, in order to improve the intensity of turbulence generation. Analysis of the flow field vector diagram obtained through Fluent simulation shows that the improvement of this design enhances the turbulence intensity behind the airflow, such as... Figure 7 The image shows the turbulence intensity distribution without the turbulence-inducing component 3. Figure 8 The diagram shows the turbulence intensity distribution when the turbulence component 3 is set in this embodiment. It can be seen that the streamlines of the airflow are no longer straight after passing through the turbulence component 3. At the rear end of the turbulence component 3, the airflow is divided into multiple streams, forming obvious vortices and turbulence zones. Under the action of the turbulence component 3, the airflow is compressed and passes through a smaller space, resulting in a significant increase in local velocity. The maximum velocity is much higher than the velocity without the guide fluid 31. The strong turbulence generated when the airflow bypasses the turbulence fluid 32 can more effectively break the thermal boundary layer on the surface of the temperature sensor 8, greatly enhancing convective heat transfer. The higher velocity and stronger turbulence result in a higher convective heat transfer coefficient. Significant improvement can be achieved by placing the temperature sensor 8 in the downstream eddy current region, which can further reduce measurement errors caused by radiative heat transfer.

[0053] Based on the radiation theory of heat transfer, and for the need for temperature detection in large spaces, when there is a small, non-concave surface within the large space, the radiation heat transfer equation between the wall and the sensor can be simplified as follows: ;

[0054] Temperature sensor 8 can be a thermocouple. When temperature sensor 8 measures temperature, the radiative heat transfer between temperature sensor 8 and the surrounding large-space enclosure structure equals the convective heat transfer around the temperature sensor.

[0055] Radiative heat exchange ;

[0056] Convection heat transfer ;

[0057] again,

[0058] Based on this, the temperature of the surface of the temperature sensor's detection end can be calculated using the following formula:

[0059] ;

[0060] When a heat shield is used, the heat exchange process between the heat shield and the large space satisfies the above description. Then, the heat shield undergoes radiative heat exchange with the temperature sensor detection end, achieving convective heat exchange balance with the air. The convective heat transfer coefficient is calculated using the following formula: ;

[0061] In the above formula, The temperature of the entire temperature sensor. The temperature of the wall surface, The temperature of the airflow. Let be the area of ​​the non-concave surface. The convective heat transfer coefficient is... For sensor emissivity, Where is the Stefan Boltzmann constant, Re is the Reynolds number, Pr is the Prandtl number, and Nu is the Nusselt number. The convective heat transfer coefficient can be obtained through Nu; where... When the wall surface temperature is used for heat transfer between the heat shield and the enclosure structure, it is represented by the area of ​​the enclosure structure. When it is used for heat transfer between the temperature sensor inside the heat shield and the heat shield, it is represented by the inner surface area of ​​the heat shield.

[0062] Taking an airflow velocity of 10 m / s and an indoor ambient temperature of 22℃ as an example, the detection error with and without a heat shield is calculated as follows:

[0063]

[0064] As shown in the table above, the temperature error detected after using a heat shield is significantly improved compared to the temperature error detected without a heat shield. Furthermore, the greater the difference between the temperature of the building envelope and the room temperature, the more significant the improvement in the detection error. This indicates that the temperature detected after using a heat shield is closer to the actual indoor temperature.

[0065] Working Principle: After the temperature sensor is installed on the heat shield of this invention, it is placed on the station wall or column structure. The fan driven by the motor of the air supply component 2 draws in the air to be measured from the station environment through the air inlet 6. The air enters a specific-shaped airflow channel formed by the shield and the baffle 4, such as an L-shape, U-shape, or S-shape. This process not only guides the airflow but also isolates heat-generating components such as the motor outside the core detection area, avoiding thermal interference. Subsequently, the airflow is guided by the turbulence component 3: first, the guide fluid 31 gathers it and guides it to the turbulence fluid 32. The turbulence fluid 32 disrupts the laminar flow into turbulence, ensuring that the airflow and the temperature sensor sensing element fully and quickly exchange heat, thereby accurately measuring the true temperature of the air. Finally, the airflow carrying any heat that may have seeped in is discharged through the exhaust port 7. In addition, the wind speed control component intelligently adjusts the fan to the minimum "critical speed" required to maintain measurement accuracy based on real-time feedback from the temperature sensor, achieving energy-saving and efficient operation. Throughout the process, the 3D-printed silicone cover ensures a close fit on complex surfaces, while the heat-insulating coatings on its inner and outer surfaces help block external heat radiation, together providing a stable and reliable environment for temperature detection.

[0066] Any aspects of this utility model that are not detailed herein are conventional technical means known to those skilled in the art.

[0067] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more unless otherwise explicitly specified.

[0069] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0070] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A heat shield for a large-space temperature sensor in a railway station based on 3D printing, characterized in that, include: The enclosure (1), the air supply assembly (2), and the turbulence assembly (3); A baffle plate (4) is symmetrically arranged inside the cover (1). The baffle plate (4) and the inner wall of the cover (1) cooperate to form an airflow channel (5). An air inlet (6) is opened through the cover wall on the side of the airflow channel (5) near the middle of the cover (1). An exhaust hole (7) is opened through the cover wall on the side of the airflow channel (5) away from the air inlet (6). The air supply assembly (2) includes a fan (21), which is located on the side wall of the cover (1) near the air inlet (6) and a temperature sensor (8) is provided on the bottom plate of the cover (1) on the side away from the air inlet (6). The turbulence-disrupting component (3) is disposed between the fan (21) and the temperature sensor (8), and includes a guide fluid (31) and a turbulence-disrupting fluid (32). The guide fluid (31) is used to contact the airflow generated by the fan (21) and guide it to the turbulence-disrupting fluid (32). The turbulence-disrupting fluid (32) is disposed between the guide fluid (31) and the temperature sensor (8) to disrupt the airflow.

2. A heat shield for a large-space temperature sensor in a station based on 3D printing, as described in claim 1, characterized in that: The cover (1) is made of 3D printed silicone material that can produce deformation and is set on the surface of the station's wall or column components through a connecting structure.

3. A heat shield for a large-space temperature sensor in a station based on 3D printing, as described in claim 1, is characterized in that: Two baffles (41) are symmetrically arranged inside the cover (1). The end of the baffle (41) near the air inlet (6) is connected to the inner wall of the cover (1) on that side, and the end of the baffle (41) away from the air inlet (6) is left with a gap between it and the inner wall of the cover (1) on that side.

4. A heat shield for a large-space temperature sensor in a station based on 3D printing, as described in claim 3, characterized in that: The air inlet (6) and the exhaust outlet (7) are located at the two ends of the cover (1), and the airflow channel (5) inside the cover (1) is an axially symmetrical L-shape.

5. A heat shield for a large-space temperature sensor in a station based on 3D printing, as described in claim 3, characterized in that: The air inlet (6) and the exhaust outlet (7) are both located at the same end of the cover (1), and the airflow channel (5) inside the cover (1) is U-shaped with axial symmetry.

6. A heat shield for a large-space temperature sensor in a station based on 3D printing, as described in claim 4, characterized in that: Baffles 2 (42) are provided in the cover (1) on the side of the baffles 1 (41) that are far apart from each other. The end of the baffles 2 (42) away from the air inlet (6) is connected to the inner wall of the cover (1) on that side. The end of the baffles 2 (42) near the air inlet (6) is left with a gap between it and the inner wall of the cover (1) on that side. The airflow channel (5) in the cover (1) is S-shaped with axial symmetry.

7. A heat shield for a large-space temperature sensor in a station based on 3D printing, as described in claim 1, characterized in that: The inner and outer surfaces of the cover (1) are coated with heat insulation material.

8. A heat shield for a large-space temperature sensor in a station based on 3D printing, as described in claim 3, characterized in that: The air supply assembly (2) also includes a power component (22) and a transmission mechanism (23). The power component (22) is located inside the cover (1) on the side of the baffle plate (41) away from the turbulence assembly (3). The output end of the power component (22) is connected to the fan (21) through the transmission mechanism (23) that passes through the baffle plate (41) to drive the fan (21) to rotate.

9. A heat shield for a large-space temperature sensor in a station based on 3D printing, as described in claim 3, characterized in that: The turbulent fluid (32) is set as a cylinder, and its axis is located on the central surface between the two baffles (41); Two temperature sensors (8) are set and are symmetrically set on the bottom plate of the cover (1) on the side of the turbulent fluid (32) away from the guide fluid (31) with respect to the center plane between the baffle plate (41); Two guide fluids (31) are provided, symmetrically arranged on the side plate of the baffle plate (41) that are close to each other about the center plane between them. The cross section of the guide fluid (31) is a right triangle, and the extension line of the hypotenuse of the triangle passes through the turbulent fluid (32) and the temperature sensor (8) opposite to it.

10. A heat shield for a large-space temperature sensor in a station based on 3D printing, as described in claim 1, characterized in that: It also includes a wind speed control component (9), which is located inside the cover (1) and is symmetrical with the position of the power component (22) of the air supply component (2) about the center plane between the baffle plate (41). The wind speed control component (9) is connected to the power supply, temperature sensor (8) and power component (22).

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