Gordon type heat flow meter and self-correction method thereof
A heat flow meter, Gordon-type technology, applied in the field of Gordon-type heat flow meter and its self-correction, can solve problems such as difficult to measure small-range heat flux, achieve radiation heat flow parameter measurement, ensure accuracy, and improve accuracy Effect
Pending Publication Date: 2022-05-27
BEIJING ZHENXING METROLOGY & TEST INST
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[0004] When the heat flow meter of the two methods measures the environment with small heat flux density in the space, it not only absorbs the radiation heat flow of the space, but also radiates the heat flow to the space due to the temperature of the sensor itself, which is affected by the different temperature of the heat sink body of the sensor. When the space When the temperature difference between the radiation temperature and the surface temperature of the sensor is very small, the energy absorbed by the sensor is very close to the energy emitted into the space, resulting in a small net absorption of space radiation energy by the sensor. There is no temperature difference on the round foil of the sensitive element of the sensor, and the output of the sensor is basically zero. Therefore, it is difficult for the Gordon-type heat flux sensor of the existing design to measure the small-scale heat flux density of the ambient radiation
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[0042] In order to make those skilled in the art better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this specification. Obviously, the described The embodiments are only some of the embodiments of the present specification, but not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of this specification.
[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodime...
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The invention discloses a Gordon type heat flow meter and a self-correction method thereof. The heat flow meter comprises a heat sink body, a sensitive element and a heat energy detection assembly, one side of the heat sink body is of a groove structure, the interior of the heat sink body is of a water cooling structure, the sensitive element is arranged on the opening side of the groove structure so that a heat insulation cavity can be formed in the groove structure, and the sensitive element is used for absorbing radiation heat flow in space and transmitting heat energy to the heat sink body. The water cooling structure provides a channel for cooling liquid and is used for cooling the heat sink body; the heat energy detection assembly is connected with the heat sink body and the sensitive element and used for detecting the temperature of the heat sink body and the sensitive element, small-range radiation heat flow parameter measurement of a low-pressure space is achieved, and the detection accuracy is improved.
Description
technical field [0001] The present specification relates to the technical field of heat flow measurement, in particular to a Gordon-type heat flow meter and a self-correction method thereof. Background technique [0002] Gordon heat flow meter, also known as round foil heat flow sensor, has the advantages of simple structure, fast response time, high measurement accuracy and good environmental adaptability. It is widely used in radiation and radiation convection heat flow parameters in aviation, aerospace, construction, petrochemical and other industries. Measurement. [0003] Gordon-type heat flow sensor, based on the principle of temperature gradient measurement, can be divided into heat sink type heat flow sensor and liquid-cooled heat flow sensor according to whether a liquid cooling design is adopted. The liquid-cooled heat flow sensor relies on liquid cooling to take away the heat absorbed by the sensor and is used for megawatt-level long-term heat flow density measur...
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IPC IPC(8): G01K17/08G01K19/00
CPCG01K17/08G01K19/00
Inventor 马越岗赵博白岩林易卉
Owner BEIJING ZHENXING METROLOGY & TEST INST