38results about How to "Reduce temperature measurement error" patented technology

The invention discloses a multifunctional heat treatment system for a steel pipe. The heat treatment system comprises six groups of roller paths, a medium-frequency induction furnace device, a high-temperature resistance furnace device, an ultra fast cooling device, an outward sprinkling and inward spraying device and a low-temperature resistance furnace device, wherein the six groups of roller paths consist of a feeding roller path group, a medium-frequency induction heating roller path group, an air cooling roller path group, an ultra fast cooling roller path group, an outward sprinkling and inward spraying roller path group and a discharging roller path group which are arranged in sequence; the medium-frequency induction furnace device is arranged between two adjacent roller paths of the medium-frequency induction heating roller path group; the high-temperature resistance furnace device is arranged on one side of the air cooling roller path group; the ultra fast cooling roller path group is arranged in the ultra fast cooling device; the outward sprinkling and inward spraying device is arranged on one side of the outward sprinkling and inward spraying roller path group; and the low-temperature resistance furnace device is arranged on one side of the discharging roller path group. According to the system, the whole process line is compact in design, the operation is simple and convenient, needed equipment can be combined and selected according to process requirements, and various heat treatment process requirements of the steel pipe are met.

The invention relates to an embedded type multipoint wireless temperature measurement method of a guide screw, which is characterized in that a wireless temperature measurement device is embedded inside the guide screw; temperature transmitters of the wireless temperature measurement device are distributed in the length direction of the inner wall of the guide screw in a multipoint manner; the peripheries of the temperature transmitters are filled by thermal conduction silicon grease; and the temperature transmitters arranged in a multipoint manner transmit measured temperature data to a Bluetooth receiver of a receiving and processing device through a Bluetooth transmitter. Compared with the prior art, the embedded type multi-point wireless temperature measurement method has the beneficial effects that as the wireless temperature measurement device is embedded inside the guide screw, and the measured temperature data is transmitted to the receiving and processing device through the Bluetooth transmitter, the temperature measurement error is small, the real-time online measurement can be realized, and the remote transmission can be realized; and the measurement error can be controlled within the minimum range, so that the precision of a machine tool is improved, and the product quality is improved.

The temperature-measuring device includes gripping part, at least a measurement module, accommodation cavity on the gripping part, and at least one insertion hole connected to the accommodation cavity. The accommodation cavity is in use for gripping heat pipe to be measured. The insertion hole is in use for accommodating the measuring module. Being in use for fixing measuring module to be measured, locative structure includes a load bearing block, a pressing block, an elastic cell, and a thermocouple. The elastic cell supports between the load bearing block and the pressing block. Being attached to surface, which is apart from the elastic cell, of load bearing block, the thermocouple is in use for measuring temperature of heat pipe. Through elastic force generated by contraction in lengthof the elastic cell, the thermocouple contacts heat pipe tightly so as to raise accuracy for measuring temperature of heat pipe.

The invention discloses a digital temperature measurement system for large-volume concrete construction. The temperature measurement system includes a temperature measurement device bracket, several serial temperature measurement devices, a data acquisition device and a server. The temperature measuring device bracket includes a supporting base, a vertical bar arranged on the supporting base, and a short horizontal bar arranged on the vertical bar. The series temperature measuring device includes a data line, and several temperature measuring instruments packaged on the data line, and the temperature measuring instrument includes a temperature sensor, a thin-walled steel sleeve, a filling material, a rubber pad and a heat shrinkable sleeve. The data acquisition device collects the temperature data of the temperature sensor according to the preset frequency, and transmits the data to the server. The series temperature measuring device has the advantages of high temperature resistance, anti-damage, anti-interference, and short-circuit prevention. The temperature measuring device bracket is used to fix the series temperature measuring device. The temperature measuring instrument is changed to a horizontal setting, which can effectively improve the measurement accuracy.

The invention discloses a temperature indicator segmentation compensating device which comprises a temperature pointer (1), a compensation system and a Bourdon tube (3), wherein the compensation system consists a compensation strip i (2) and a compensation strip ii (4); the revolving shaft of the compensation system is fixedly connected with that of the temperature pointer (1); the compensation strip ii (4) is coaxially connected below the compensation strip i (2); a push rod (5) is arranged below the compensation strip ii (4); and the Bourdon tube (3) is arranged below the push rod (5). The compensation strip ii is arranged coaxially to the compensation strip I, and an eccentricity is arranged between the revolving shaft of the push rood and that of the compensation system and the temperature pointer, or a track groove plate or a cam plate is arranged to limit the rotating track of the push rod so as to realize segmentation compensation of temperature. The temperature indicator is effectively compensated by the segmentation compensating device, thus further reducing the temperature detection error; in addition, the compensating device has simple structure, easy manufacture and low cost, and is beneficial to popularization and application.

The invention discloses an optimized temperature measurement method based on a single-camera colorimetric temperature measurement system, which involves calibrating the proportional distribution of spectral intensity; optimizing the calculation formula of pixel unit temperature; calibrating and optimizing the parameters of the calculation formula of pixel unit temperature; calibrating the proportional distribution of spectral intensity includes Filter selection, fixed position of single camera colorimetric temperature measurement system, first band image and second band position calibration and sub-image matching, first band and second band dual-channel image acquisition, reference target point spectroscopic intensity ratio calculation and Calculation of the spectral intensity ratio distribution of the area to be measured; the optimized pixel unit temperature calculation formula includes the temperature calculation formula that takes the obtained reference target point spectral intensity ratio as an optimization parameter into the temperature measurement system, and the calibration and optimization pixel unit temperature calculation formula parameters include filtering Chip selection, reference temperature point selection, heating up of black body furnace, image acquisition, calibration formula derivation and multi-parameter collaborative optimization. The measured temperature is more accurate by optimizing the temperature measurement method.

The invention discloses a high-temperature flue gas contact temperature measuring device and a measuring method thereof. The device comprises: a high-temperature flue gas collection system, a water-cooled heat exchange system, a flue gas component analysis system, an air extraction device, a measuring element, and a data acquisition system. and processing system; the measuring element, the flue gas component analysis system are electrically connected to the data acquisition and processing system; the water-cooled heat exchange system is arranged after the high-temperature flue gas collection system, and the flue gas The component analysis system is arranged at the tail end of the secondary water cooling system, and the exhaust device is connected to the tail end of the secondary water cooling system. The invention uses a water-cooled heat exchange system to cool the high-temperature flue gas to below 1200°C, and calculates the temperature of the high-temperature flue gas by measuring its temperature and the heat absorbed by the cooling medium, thereby realizing high-precision and long-term monitoring of the high-temperature flue gas above 1600°C. Measurement.

The invention supplies a heat pipe temperature measuring system. It includes one heat pipe temperature measuring device and one linear displacement control device. The former includes one setting part, at least one measuring component, at least one pressing board. The setting part is set one setting cavity and at least one inserting hole. Each measuring component includes one load-bearing block, one elastic component, and one thermocouple. One end of the elastic component is connected with load-bearing block. The thermocouple clung to one side of the load-bearing block far from the elastic component to measure heat pipe temperature. Each pressing board is connected with another end of the elastic component. The linear displacement control device is used to control the linear displacement for the pressing board.

The invention provides a temperature measuring device, comprising at least two paths of temperature sensors, a precise reference resistor group, a channel switching device, a precise constant-current source group, a low-pass filter, an analog / digital converter and a controller, wherein the temperature sensors and the channel switching device constitute a temperature measuring channel, and the low-pass filter and the analog / digital converter are connected to constitute a signal processing circuit; the temperature sensors, the precise constant-current source group and the precise reference resistor group are connected with the low-pass filter through the channel switching device; and the controller is respectively connected with the channel switching device, the precise constant-current sources and the analog / digital converter and used for controlling the selection of the precise reference resistors of the precise reference resistor group, the precise constant-current sources of the precise constant-current source group and temperature measuring channels and processing digital signals of the analog / digital converter.

The invention provides a pressure and flow stabilizing device of a pipeline gas. The pressure and flow stabilizing device comprises a pressure and flow stabilizing barrel, a gas inlet pipe and an exhaust pipe, wherein the pressure and flow stabilizing barrel comprises a barrel body and a first end plate and a second end plate which are respectively arranged on the two end faces of the barrel body; the gas inlet pipe is arranged on the lower side of the first end plate; the exhaust pipe is arranged on the upper side of the second end plate; the gas inlet pipe and the exhaust pipe communicate with the pressure and flow stabilizing barrel; and a pressure measurement hole and a temperature measurement hole are formed in the surface of the pressure and flow stabilizing barrel. The pressure and flow stabilizing device has the beneficial effects that a gas flow pressure and flow stabilizing unit is composed of the large-diameter and eccentric pressure and flow stabilizing barrel, and gas flow at the high speed from tens of meters per second to hundreds of meters per second is changed to gas flow at the low speed of 15 meters per second or below, so that a dynamic temperature head and a dynamic pressure head are greatly decreased, and the gas cyclone influence is greatly eliminated; and besides, through mixing flow in the pressure and flow stabilizing barrel, the influence of temperature difference of a central layer and an outer layer of a gas pipeline is reduced, and measurement errors of pressure and temperature of the high-speed flow gas are decreased.

The invention discloses a method for regulating and controlling an air-flowing environment of a heating furnace, which belongs to the field of combustion monitoring and controlling, is applicable to detection and optimal control over combustion of a heating furnace and solves the problems that a mode is needed to be retrained when actual operation work conditions are deviated from preset conditions of the model or when parameters for supporting model operation are detected to be abnormal because an empirical mode is applied in the internal combustion monitoring of the traditional furnace. Themethod comprises the steps of equipment arrangement detection, image number processing and control. According to the method disclosed by the invention, a radioactive energy signal is extracted from flame image in different arranged sections of the heating furnace and is combined with air-flowing environments in the different sections for detecting and calculating reasonable air / combustion ratio, thus the oxidation and burn of steel and furnace tubes caused by the improper air-flowing environments in the heating furnace are reduced and the irregularity of quality of products in different batches is prevented. According to the method, proper air-flowing environments in the furnace can be created, temperature measuring errors are reduced and operation optimization, energy saving and emissionreduction of the heating furnace are realized.

The invention discloses an intelligent sub-area temperature-controlled composite material laying mold and a control method. The control areas are separated by a heat insulation layer to reduce the heat transfer rate between each temperature control area; the circulating fluid is used to increase or decrease the surface temperature of the mold; the circulating pipeline is used to load the circulating fluid and set In the mold body; a temperature control adjustment component, which is used for splitting or merging of the circulating fluid after the temperature is raised or lowered to input different temperature control areas to adjust the surface temperature of the mold body in different temperature control areas; a temperature sensor, It is used to detect the mold surface temperature. The invention can meet the temperature process curve of the thermoplastic composite material member in the stage of laying and in-situ solidification and molding, and can guarantee the quality and performance of the final product.