Temperature measurement method of small-diameter rod bundle component under motion condition
A temperature measurement, small diameter technology, used in thermometers, measuring devices, measuring heat, etc., can solve problems such as easy falling off of thermocouples
Active Publication Date: 2019-01-18
NUCLEAR POWER INSTITUTE OF CHINA
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[0004] The invention provides a method for measuring the temperature of a small-diameter rod bundle assembly under moving conditions, which solves the problem that thermocouples are easy to fall off due to moving conditions in a narrow space, and can ensure accurate and stable measurement under the condition that the experimental device is in motion The temperature of the wall surface of the small-diameter rod bundle is carried out, and the heat transfer characteristic experiment of the relevant rod bundle channel is carried out
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[0019] The invention provides a method for measuring the temperature of small-diameter rod bundle components under moving conditions, which solves the problem that thermocouples are easy to fall off due to moving conditions in a narrow space, and can ensure accurate and stable measurement under the condition that the experimental device is in motion The temperature of the wall surface of the small-diameter rod bundle is carried out, and the related heat transfer characteristic experiment of the rod bundle is carried out.
[0020] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, under the condition of not conflicting with each other, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0021] In...
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The invention discloses a temperature measurement method of a small-diameter rod bundle component under a motion condition. The method comprises: respectively inserting two thermocouples in at least two heating tubes of a rod bundle, electrically welding each thermocouple on an inner wall of a heating tube through a manner of silver welding, coating a layer of high-temperature-resistance insulation varnish at an armored part of each thermocouple, and carrying out normal-temperature curing for 36 hours after varnishing; extending into the heating tube by one end of a support member from one endof the heating tube to support the thermocouple; then using the silver welding method to enable the thermocouple to be fixed on an inner wall surface; and then filling the heating tube with an insulation material to strengthen insulation between the thermocouple and an electrified wall surface; using the thermocouple to obtain temperature of the inner wall of the heating tube by measurement, andcalculating and obtaining temperature of an outer wall of the heating tube through the temperature of the inner wall of the heating tube. Effects of accurately and stably measuring the wall temperature of the small-diameter rod bundle, and carrying out relevant heat transfer characteristic experiment of the bundle rod can be guaranteed under the condition that an experiment device moves.
Description
technical field [0001] The invention relates to the research field of offshore floating nuclear power plants and nuclear powered ships, in particular to a method for measuring the temperature of small-diameter rod bundle components under motion conditions. Background technique [0002] Floating nuclear power plants and nuclear-powered ships at sea will be affected by the undulating motion of waves during their work. The coolant in the channel also moves accordingly, especially when the coolant is in two phases, a large number of bubbles migrate with the movement of the waves, resulting in changes in the flow field and temperature field of the channel. In order to analyze the influence of motion conditions on the heat transfer characteristics of the rod bundle, it is necessary to measure the temperature field of the channel by using a thermocouple to measure the wall temperature of the rod bundle. [0003] Due to the small diameter of the rod, it is difficult to install the ...
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Login to View More IPC IPC(8): G01K7/02G01K13/00
CPCG01K7/02G01K13/00
Inventor 毕景良谢峰黄彦平徐建军
Owner NUCLEAR POWER INSTITUTE OF CHINA