Views: 237 Author: Wendy Publish Time: 2023-08-16 Origin: Site
The main elements that impact the quality and dependability of equipment are environmental conditions. The influence of temperature shock environment is an issue that needs to be taken into account for equipment utilized in environments where the ambient air temperature changes quickly. This environment exposes equipment to a wide range of typical environmental effects, including deformation or fracture of parts, failure of insulation protection, clamping or relaxation of moving parts, and changes to electrical and electronic components due to rapid condensation or frost. The equipment's capacity to function normally in a temperature shock environment directly reflects how well it can adjust to this setting.
The low-temperature chamber, high-temperature chamber, refrigeration system, heating system, control system, conversion device, and other equipment make up the temperature shock test apparatus. The low-temperature chamber can independently carry out low-temperature tests and offers a low-temperature platform for the temperature shock test; The high-temperature chamber can perform high-temperature tests and serves as a high-temperature platform for the temperature shock test; The low-temperature chamber is housed in a low-temperature environment thanks to the refrigeration equipment; The high temperature chamber is housed in a high temperature environment thanks to the heating system; The conversion device is used to convert the test piece during the test. The control system completes the control and measurement of the equipment and test process.
The chamber construction and air flow mode must be carefully constructed in order to meet the requirements of the temperature shock test. The low-temperature chamber's structure must be able to quickly cool down equipment during the transition from normal temperature to the requisite low temperature and temperature shock, as well as maintain the chamber's temperature and air flow uniformity. The high-temperature chamber's structure must be suitable for quickly bringing equipment from a normal temperature to the requisite high temperature during a temperature shock, and for maintaining temperature and air flow uniformity within the chamber.
An essential component of equipment design is the air distribution mode. Upper side air supply and lower side air return as well as full orifice top air supply and lower side air return are two frequently used air supply modalities. The distribution of temperature and air velocity in the working area is more uniform because the overall orifice air supply mode has the benefits of fast and good mixing of air flow, uniform and parallel diffusion of air flow, and rapid attenuation of temperature difference and wind speed. As a result, the full orifice air supply is used in the return air mode for both the low-temperature chamber and the high-temperature chamber's air circulation. The air flow in the chamber is drawn by the fan and mixed with either the hot or cold air produced by the heating or cooling system before entering the pressure stabilization layer along the circulation air duct to create an even flow and pressure before being sent into the chamber.
Both the high-temperature chamber and the low-temperature chamber use insulation layers and a steel frame enclosure structure. At a specific distance from the top wall, an orifice plate in full size is fitted. A steady pressure layer is created by the top wall and the full-scale orifice plate.
The gate is located at the chamber's front end, while a circulating fan and air duct are installed at the chamber's back end.
The conversion device uses the rail type conversion mode, which is made up of rail cars and specimen cars, in order to carry out the function of rapid conversion. The test piece truck serves as the test piece's support and is moved between two chambers for testing; the test piece and test piece car are moved quickly from one chamber to the next using the transfer rail car. The upper track is configured to make it easier to dock with the tracks in the two chambers and move the test piece car, while the lower wheel is arranged to roll on the ground track.