A reflective equivalent thermal resistance detection device for a radiative cooling coating

Abstract

The utility model discloses a kind of reflective equivalent thermal resistance detection equipment of radiation refrigeration coating, it is related to detection equipment technical field, including workbench, the upper surface of workbench is fixedly connected with guide frame, transmission mechanism is equipped in the inside of guide frame, the inner wall slidingly connected with two bearing frames of guide frame, the inside of two bearing frames is equipped with a clamping mechanism. It can be moved bearing frame conveniently by setting transmission mechanism when a sample body is detected in detection area, the removal of the sample body that has been detected and the installation of new sample body are rapidly completed in another station, clamping mechanism ensures the stable placement of new sample body, this parallel operation mode effectively reduces equipment idle time, significantly improves sample body processing efficiency, compared with traditional single-station detection equipment, detection efficiency is greatly improved, effectively promotes the rapid detection and batch evaluation process of radiation refrigeration coating, meets the demand of efficient production and research and development.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically a device for testing the reflective equivalent thermal resistance of radiation-cooled coatings. Background Technology

[0002] As people's requirements for energy efficiency and indoor environmental comfort continue to increase, radiation cooling coatings, with their unique thermal radiation characteristics, have shown great potential in reducing building surface temperature and reducing air conditioning energy consumption. However, accurately evaluating the performance of radiation cooling coatings faces many challenges, among which the accurate detection of their reflective equivalent thermal resistance is crucial, as it directly relates to the cooling effect and energy efficiency of the coating in practical applications.

[0003] Currently, in the testing of the equivalent thermal resistance of radiation-cooled coatings, most existing equipment adopts a single-station sample testing method. After a sample is tested, it needs to be removed before the next sample to be tested can be placed in. This method is not only cumbersome, but also results in low overall testing efficiency due to the equipment being idle during this process. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a device for detecting the reflective equivalent thermal resistance of radiation-cooled coatings.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for detecting the reflective equivalent thermal resistance of a radiation-cooled coating, comprising a worktable, a guide frame fixedly connected to the upper surface of the worktable, a transmission mechanism provided inside the guide frame, two support frames slidably connected to the inner wall of the guide frame, a clamping mechanism provided on the inner side of each of the two support frames, a sample body provided on the inner side of each of the two support frames, a stand fixedly connected to the upper surface of the worktable, a detection sensor fixedly installed on the top of the stand, and a controller fixedly installed on the front outer surface of the worktable.

[0006] Furthermore, the transmission mechanism includes a motor fixedly mounted on the outer surface of the guide frame, the output end of the motor being fixedly connected to a rotating shaft, and the outer surface of the rotating shaft being rotatably connected to the inner wall of the guide frame.

[0007] Furthermore, two driving bevel gears are fixedly connected to the outer surface of the rotating shaft, and a driven bevel gear is meshed with the outer surface of each of the two driving bevel gears.

[0008] Furthermore, a reciprocating screw is fixedly connected to the outer surface of each driven bevel gear. The outer surface of the reciprocating screw is rotatably connected to the inner wall of the guide frame, and the reciprocating screw is screwed to the support frame.

[0009] Furthermore, the clamping mechanism includes a telescopic rod fixedly connected to the inner wall of the support frame, and a clamping plate is fixedly connected to the telescopic end of the telescopic rod. The outer surface of the clamping plate is slidably connected to the inner wall of the support frame, and the upper surface of the clamping plate is in contact with the bottom surface of the sample body.

[0010] Furthermore, an elastic element is fitted on the outer surface of the telescopic rod, one end of which is fixedly connected to the bottom surface of the clamping plate, and the other end of which is fixedly connected to the inner wall of the support frame.

[0011] Compared with existing technologies, the reflective equivalent thermal resistance testing equipment for this radiation-cooling coating has the following advantages:

[0012] 1. This utility model, by setting up a transmission mechanism, allows the carrier frame to be easily moved while a sample is being tested in the testing area. The sample can then be quickly removed from another station, and a new sample can be installed. The clamping mechanism ensures the stable placement of the new sample. This parallel operation mode effectively reduces equipment downtime and significantly improves sample processing efficiency. Compared with traditional single-station testing equipment, the testing efficiency can be greatly improved, which powerfully promotes the rapid testing and batch evaluation of radiation cooling coatings and meets the needs of efficient production and R&D.

[0013] 2. This utility model, through the coordinated action of the telescopic rod and elastic element of the clamping mechanism, enables the clamping plate to firmly clamp the sample body, effectively preventing the sample body from shifting and shaking during the detection process, greatly improving the stability and accuracy of sample detection, and providing a guarantee for obtaining reliable reflection equivalent thermal resistance detection data. Attached Figure Description

[0014] Figure 1 This is a three-dimensional front view structural diagram of the present invention;

[0015] Figure 2 This is a partial structural schematic diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the transmission mechanism of this utility model;

[0017] Figure 4 This is a schematic diagram of the clamping mechanism of this utility model.

[0018] In the diagram: 1. Workbench; 2. Guide frame; 3. Transmission mechanism; 301. Motor; 302. Rotating shaft; 303. Driving bevel gear; 304. Driven bevel gear; 305. Reciprocating screw; 4. Support frame; 5. Clamping mechanism; 501. Telescopic rod; 502. Clamping plate; 503. Elastic element; 6. Sample body; 7. Stand; 8. Detection sensor; 9. Controller. Detailed Implementation

[0019] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0020] This embodiment provides a device for testing the reflective equivalent thermal resistance of radiation-cooled coatings. By setting up a transmission mechanism 3, when a sample body 6 is being tested in the testing area, the carrier frame 4 can be conveniently moved using the transmission mechanism 3 to quickly complete the removal of the tested sample body 6 and the installation of a new sample body 6 at another station. The clamping mechanism 5 ensures the stable placement of the new sample body 6. This parallel operation mode effectively reduces the equipment's idle time and significantly improves the processing efficiency of the sample body 6. Compared with traditional single-station testing equipment, the testing efficiency can be greatly improved, which strongly promotes the rapid testing and batch evaluation process of radiation-cooled coatings and meets the needs of efficient production and R&D.

[0021] See Figures 1-4 A device for detecting the reflective equivalent thermal resistance of radiation-cooled coatings is provided. The worktable 1 is made of high-strength aluminum alloy, which has the advantages of light weight, high strength and good corrosion resistance. It can maintain structural stability during long-term use and provide a solid support foundation for the entire device.

[0022] The upper surface of the workbench 1 is firmly connected to the guide frame 2 by a precision welding process. The guide frame 2 is made of stainless steel and is formed into a cuboid shape by high-precision machining. Its internal slide rail structure is finely ground and polished, which not only ensures good straightness, but also greatly reduces friction, so that the support frame 4 can slide smoothly and steadily on its inner wall, effectively avoiding jamming, thereby ensuring the continuity and accuracy of the detection process.

[0023] The transmission mechanism 3 plays a crucial role in power transmission during equipment operation. The motor 301 is a high-performance brushless DC motor, which boasts significant advantages such as high efficiency and energy saving, stable speed, high torque, and low noise. The output end of the motor 301 is tightly connected to the rotating shaft 302 via a high-strength alloy steel coupling. This connection method ensures efficient and reliable power transmission, effectively reducing energy loss and mechanical vibration. The rotating shaft 302 is made of tempered 45# steel, possessing excellent comprehensive mechanical properties. Its outer surface is precision ground to ensure high coaxiality and surface finish. A high-quality oil-impregnated bearing is used for rotational connection within the guide frame 2. This oil-impregnated bearing automatically forms an oil film during operation, further reducing friction between the rotating shaft 302 and the guide frame 2, extending the service life of the components, and also contributing to improved transmission accuracy.

[0024] Two driving bevel gears 303 are fixedly connected to the outer surface of the rotating shaft 302. The driving bevel gears 303 are made of high-quality alloy steel and have undergone carburizing and quenching treatment. They have high tooth surface hardness and strong wear resistance. Their tooth profile is precisely CNC machined to ensure the meshing accuracy with the driven bevel gear 304. In the process of power transmission, they can achieve efficient and stable transmission and accurately transmit the rotational power of the motor 301 to the driven bevel gear 304.

[0025] Each driven bevel gear 304 has a reciprocating lead screw 305 fixedly connected to its outer surface. The reciprocating lead screw 305 is also made of 45# steel, and the threaded part is machined by precision grinding process. The surface is treated with hard chrome plating, which significantly improves the wear resistance and corrosion resistance of the thread, ensuring that the accuracy of the thread will not decrease during long-term use. The reciprocating lead screw 305 is screwed to the support frame 4. This connection method allows the rotational motion of the lead screw to be accurately converted into the linear reciprocating motion of the support frame 4. Through the forward and reverse rotation control of the motor 301, the position switching of the support frame 4 in the guide frame 2 can be realized quickly and accurately, meeting the equipment's requirements for rapid replacement and positioning of the sample body 6 during the testing process.

[0026] The clamping mechanism 5 is designed to ensure the stability of the sample body 6 during the testing process.

[0027] The telescopic rod 501 of the clamping mechanism 5 adopts a hollow cylindrical structure made of stainless steel, which reduces its own weight while ensuring sufficient strength. A high-precision linear spring is installed on the outside as an elastic element 503. The elastic coefficient of the linear spring has been carefully designed and adjusted to provide just the right clamping force according to the different size and weight of the sample body 6.

[0028] When the sample body 6 is placed inside the support frame 4, the telescopic rod 501 extends under the action of the elastic element 503, pushing the clamping plate 502 closer to the sample body 6. The outer surface of the clamping plate 502 and the inner wall of the support frame 4 adopt a high-precision clearance fit to ensure that the clamping plate 502 slides smoothly and steadily without any deviation or jamming. The upper surface of the clamping plate 502 is in close contact with the bottom surface of the sample body 6. The elastic restoring force of the elastic element 503 ensures that the clamping plate 502 firmly clamps the sample body 6, effectively preventing the sample body 6 from shifting, shaking or falling off during the detection process. This greatly improves the stability and accuracy of the sample detection and provides a strong guarantee for obtaining reliable reflection equivalent thermal resistance detection data.

[0029] The upper surface of the workbench 1 is fixedly connected to the upright frame 7 by a solid welding process. The upright frame 7 is made of high-strength alloy steel and is precision machined. Its shape is designed as a columnar structure with good stability. The bottom is firmly connected to the workbench 1 and can withstand a certain amount of external impact without shaking or displacement.

[0030] At the top of the stand 7, a detection sensor 8 is fixedly installed using professional mounting clamps and shock-absorbing pads. The detection sensor 8 is a high-precision infrared thermal radiation sensor, which has the characteristics of high sensitivity and fast response. It can accurately capture the thermal radiation signal changes of the radiation cooling coating on the surface of the sample body 6. The sensor housing is made of corrosion-resistant aluminum alloy, which effectively protects the internal precision components from environmental factors and ensures its long-term stable operation.

[0031] The controller 9 is fixedly installed on the front outer surface of the workbench 1 by bolts. The housing of the controller 9 is made of fireproof, dustproof engineering plastic with good electromagnetic shielding performance. The controller 9 is connected to the motor 301 and the detection sensor 8 in the transmission mechanism 3 through shielded cables. It can accurately control the speed, direction and start and stop of the motor 301 according to the preset program and the data fed back by the detection sensor 8, thereby realizing the precise movement and positioning of the support frame 4, ensuring the automated and intelligent operation of the entire detection process, and greatly improving the detection efficiency and accuracy.

[0032] Working principle: After the equipment is started, the controller 9 first controls the motor 301 in the transmission mechanism 3 to operate. The output shaft of the motor 301 drives the rotating shaft 302 to rotate. The two active bevel gears 303 fixed on the rotating shaft 302 rotate synchronously. The active bevel gears 303 mesh with the driven bevel gears 304, transmitting power to the driven bevel gears 304, which in turn drives the reciprocating screw 305 to rotate. Since the reciprocating screw 305 is screwed to the support frame 4, the support frame 4 will slide along the predetermined direction on the inner wall of the guide frame 2 under the action of the screw rotation. When sample testing is required, the sample body 6 is inserted into the inner side of the support frame 4. At this time, the telescopic rod 501 of the clamping mechanism 5 extends, pushing the clamping plate 502 towards the sample body 6. The elastic restoring force of the elastic element 503 ensures that the clamping plate 502 firmly clamps the sample body 6, making it stably placed on the support frame 4. Subsequently, the support frame 4 moves the sample body 6 to the detection area under the drive of the transmission mechanism 3. The detection sensor 8 starts to work and detects the reflective equivalent thermal resistance of the radiation cooling coating of the sample body 6. If the sample needs to be replaced during the detection of one sample body 6, the transmission mechanism 3 can be operated again through the controller 9 to move another support frame 4 to the operation area. The clamping mechanism 5 is used to release the sample that has been detected and take it out, and put in a new sample. The new sample is placed stably under the action of the clamping mechanism 5, waiting for the next round of detection. This cycle is repeated to achieve an efficient detection process.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for detecting the reflective equivalent thermal resistance of a radiation-cooled coating, comprising a worktable (1), characterized in that: A guide frame (2) is fixedly connected to the upper surface of the workbench (1). A transmission mechanism (3) is provided inside the guide frame (2). Two support frames (4) are slidably connected to the inner wall of the guide frame (2). A clamping mechanism (5) is provided on the inner side of each of the two support frames (4). A sample body (6) is provided on the inner side of each of the two support frames (4). A stand (7) is fixedly connected to the upper surface of the workbench (1). A detection sensor (8) is fixedly installed on the top of the stand (7). A controller (9) is fixedly installed on the front outer surface of the workbench (1).

2. The device for detecting the reflective equivalent thermal resistance of a radiation-cooled coating according to claim 1, characterized in that: The transmission mechanism (3) includes a motor (301) fixedly installed on the outer surface of the guide frame (2). The output end of the motor (301) is fixedly connected to a rotating shaft (302), and the outer surface of the rotating shaft (302) is rotatably connected to the inner wall of the guide frame (2).

3. The device for detecting the reflective equivalent thermal resistance of a radiation-cooled coating according to claim 2, characterized in that: Two driving bevel gears (303) are fixedly connected to the outer surface of the rotating shaft (302), and a driven bevel gear (304) is meshed with the outer surface of each of the two driving bevel gears (303).

4. The reflective equivalent thermal resistance testing device for radiation-cooled coatings according to claim 3, characterized in that: Each of the driven bevel gears (304) has a reciprocating screw (305) fixedly connected to its outer surface. The outer surface of the reciprocating screw (305) is rotatably connected to the inner wall of the guide frame (2), and the reciprocating screw (305) is screwed to the support frame (4).

5. The device for detecting the reflective equivalent thermal resistance of a radiation-cooled coating according to claim 1, characterized in that: The clamping mechanism (5) includes a telescopic rod (501) fixedly connected to the inner wall of the support frame (4). The telescopic end of the telescopic rod (501) is fixedly connected to a clamping plate (502). The outer surface of the clamping plate (502) is slidably connected to the inner wall of the support frame (4), and the upper surface of the clamping plate (502) is in contact with the bottom surface of the sample body (6).

6. The device for detecting the reflective equivalent thermal resistance of a radiation-cooled coating according to claim 5, characterized in that: An elastic element (503) is sleeved on the outer surface of the telescopic rod (501). One end of the elastic element (503) is fixedly connected to the bottom surface of the clamping plate (502), and the other end of the elastic element (503) is fixedly connected to the inner wall of the support frame (4).

Images