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137 results about "Thermal monitoring" patented technology

Device for thermal monitoring of the terminals of an electrical connection device

The subject matter of the invention is a device for thermal monitoring of a connection device, said connection device comprising at least two terminals to be monitored, including at least one active terminal, the device comprising at least one electrically conductive fault-initiating element electrically connected to a protective conductor, and electrically insulating detection means for detecting abnormal heating, in thermal contact with each terminal to be monitored, the detection means preventing each fault-initiating element from coming into electrical contact with an active terminal so long as these detection means are not subject to a threshold temperature, and the detection means releasing the fault-initiating element when they are subject to a temperature higher than or equal to the threshold temperature in such a way that this fault-initiating element comes into electrical contact with an active terminal, the thermal monitoring device being characterized in that each fault-initiating element comprises a fixed part and a part that can be moved between a “no fault” position, in which it is held at a distance from an active terminal by the detection means, and a “fault” position in which it is released by the detection means and comes into electrical contact with an active terminal.
Owner:CHARLES

On-line thermal monitoring system of heat transfer symmetry of crystallizer copper pipe and method thereof

The invention belongs to the technical field of steelmaking continuous casting, and relates to an on-line thermal monitoring system of heat transfer symmetry of a crystallizer copper pipe on a continuous casting machine. The system comprises the crystallizer copper pipe which can monitor the heat transfer symmetry, a temperature data collection and storage module and an industrial control computer. The on-line thermal monitoring system is characterized in that a plurality of temperature measuring elements are embedded at the back of the copper pipe, and the temperature measuring elements are distributed in a 'cross' shape and in a symmetrical form based on the central section of the copper pipe. The invention comprehensively utilizes on-site actual measuring data and a computer numerical simulation technology, researches the heat transfer symmetry of a crystallizer by monitoring the surface temperature of the copper pipe, determines longitudinal distribution of heat flow of the crystallizer according to the transient heat flow calculated by the temperature of the copper pipe, calculates the temperature field of a continuous casting billet and the shell thickness of a solidification billet through a heat transfer mathematical model, and finally compares the situation of symmetrical surfaces. The invention can provide a basis for structural design of the crystallizer copper pipe and production process optimization of the crystallizer so as to promote the continuous casting billet to uniformly grow in the crystallizer.
Owner:UNIV OF SCI & TECH BEIJING

Thermal deformation recognition and correction method for coordinate measurement machine of articulated arm type

InactiveCN107607070AHigh measurement accuracyRealization of thermal deformation error compensationMeasurement devicesThermal monitoringObservational error
The invention discloses a thermal deformation recognition and correction method for a coordinate measurement machine of an articulated arm type, and the method comprises the steps: setting thermal monitoring points on a substrate of an articulated arm, a measurement arm, a joint and a measurement head, and recording to the temperature rise-time changing curve of each monitoring point; operating the coordinate measurement machine to measure a standard gauge block, wherein each thermal monitoring point is equivalent to a temperature rise value of lab temperature; measuring errors, and building an experiment error compensation model of the temperature rise values of seven thermal monitoring points of the articulated arm and a thermal deformation error value according to an MLR (Multiple Linear Regression) algorithm; determining a to-be-determined parameter through the least square method, and carrying out the compensation for a measurement result of the coordinate measurement machine of the articulated arm type. The method can obtain the mapping relation of a length measurement error of the coordinate measurement machine of the articulated arm type with the temperature rise changes between the corresponding temperature monitoring points. A machine body thermal deformation error compensation model based on the MLF (Multiple Linear Fitting) is constructed based on the mapping relation, thereby achieving the compensation for the thermal deformation error, and improving the measurement error of the articulated arm.
Owner:CHINA JILIANG UNIV
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