3 results about "Cool temperature" patented technology

The application relates to a PVC calendering film production process and belongs to the technical field of PVC calendering films. The process comprises the steps of feeding, extruding, forming, cooling, edge cutting and winding. In the cooling step, a first-stage cooling roller, a second-stage cooling roller and a third-stage cooling roller are arranged, the cooling temperatures of the first-stage cooling roller, the second-stage cooling roller and the third-stage cooling roller are sequentially reduced, and a control system is arranged in the cooling step. The control system comprises a temperature measuring module, a temperature control module, a temperature reducing module and a notification module. The temperature measuring module is used for detecting the temperature of the first-stage cooling roller and sending the temperature to the temperature reducing module. After receiving the temperature sent by the temperature measuring module, the temperature reducing module performs difference operation to obtain the corresponding temperatures of the second-stage cooling roller and the third-stage cooling roller and sends the temperatures to the temperature control module. The temperature control module adjusts the temperatures of the second-stage cooling roller and the third-stage cooling roller according to the temperatures. The application has the advantages that the temperatures of the cooling rollers can be controlled, and the probability that the produced PVC calendering film does not meet the requirements is reduced.

This invention relates to a heat treatment method and apparatus for hot-forged blanks, belonging to the field of metal heat treatment technology. The method includes: acquiring eddy current voltage values ​​in response to a trigger signal; determining the material type based on the eddy current voltage values ​​and voltage ranges; matching aeration parameters, cooling temperature, temperature gradient threshold, and temperature difference threshold based on the material type; performing aeration using the aeration parameters and acquiring the surface temperature; selecting the maximum and minimum surface temperatures from the surface temperatures and calculating the surface temperature difference, and calculating the average temperature based on the surface temperatures; determining the core temperature based on the material type and average temperature and calculating the temperature difference; correcting the aeration parameters using the surface temperature difference and the temperature difference value, and performing aeration based on the corrected aeration parameters until the core temperature is no greater than the cooling temperature, the surface temperature difference is no greater than the temperature gradient threshold, and the temperature difference is no greater than the temperature difference threshold, at which point aeration is stopped and cooling is complete. This invention balances the cooling effect of raw materials at different locations, improving the quality of the raw materials.

The application provides a water conservancy structure leakage monitoring system and method, and the system comprises: an active heating control module, which applies a controllable thermal excitation to a grating array temperature sensing module; the grating array temperature sensing module generates a temperature distribution of a region to be measured, and the temperature distribution comprises a reference temperature distribution before the controllable thermal excitation is applied, a heating temperature distribution during the controllable thermal excitation is applied, and a cooling temperature distribution after the controllable thermal excitation is stopped; a leakage identification module, which determines a temperature-time response curve based on the reference temperature distribution, the heating temperature distribution and the cooling temperature distribution, extracts a temperature rise rate, a maximum temperature rise amplitude, a peak time, a cooling rate and a thermal time constant in the temperature-time response curve, determines a comprehensive discrimination index based on the above parameters, and determines whether the water conservancy structure has leakage based on the comprehensive discrimination index. The application improves the sensitivity and accuracy of leakage monitoring.