Detection method of temperature field distribution in boiler
A detection method and field distribution technology, applied to thermometers, thermometers with physical/chemical changes, measuring devices, etc., can solve the problem of not being able to detect the internal temperature field of the tube wall opaque boiler, and achieve the breadth of transmitting and receiving signals Good, wide application range and large measurement scale
Active Publication Date: 2017-11-24
NO 719 RES INST CHINA SHIPBUILDING IND
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[0003] However, the above method is only suitable for boilers with transparent tube walls, and cannot detect the internal temperature field of boilers with opaque tube walls
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[0053] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0054] see figure 1 As shown, the embodiment of the present invention provides a detection device for gas-liquid two-phase distribution field and temperature field distribution in a boiler, including: a plurality of liquid ultrasonic transducers 1 and gas ultrasonic transducers arranged on the inner tube wall of the boiler 2. At least part of the liquid ultrasonic transducer 1 and the gas ultrasonic transducer 2 are arranged alternately, and the liquid ultrasonic transducer 1 and the gas ultrasonic transducer 2 are located on the same plane, which passes through the center point of the boiler. When the plane where the liquid ultrasonic transducer 1 and the gas ultrasonic transducer 2 are located passes through the central point of the boiler, the detection plane is the largest, which can best reflect the gas-liquid two-phase distribution field...
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The invention discloses a detection method of temperature field distribution in a boiler and belongs to the ultrasonic imaging field. The method comprises the following steps that: a detection device of the temperature field distribution in the boiler is provided; liquid ultrasonic transducers and gas ultrasonic transducers are energized to transmit and receive ultrasonic signals; an interface between a gas space and a liquid space in the boiler is calculated; the projection equation of the average flight time of the temperature field of the gas space to straight sound channels is built, and the temperature of each pixel in the gas space in the projection equation is solved; the projection equation of the average flight time of the temperature field of the liquid space to the straight sound channels is built; and the temperature of each pixel in the liquid space in the projection equation is solved. The detection method of temperature field distribution in the boiler of the invention can detect the temperature field distribution in the boiler by an ultrasonic imaging method and has a wide application range.
Description
technical field [0001] The invention relates to the field of ultrasonic imaging, in particular to a method for detecting temperature field distribution in a boiler. Background technique [0002] The temperature field in the boiler directly affects the safety of the boiler, and it is particularly important to detect the temperature field in the boiler. In the prior art, the infrared thermal imaging technology is usually used for detection, and the infrared detector is used to receive the infrared radiation energy of the target to realize the imaging of the temperature field on the surface of the object, and obtain the temperature field distribution in the boiler. [0003] However, the above method is only applicable to boilers with transparent tube walls, and cannot detect the internal temperature field of boilers with non-transparent tube walls. Contents of the invention [0004] In view of the defects existing in the prior art, the object of the present invention is to p...
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IPC IPC(8): G01K11/22
CPCG01K11/22
Inventor 柳建楠李良万华庆
Owner NO 719 RES INST CHINA SHIPBUILDING IND