Device for sealing temperature measurement lead in thermal oscillation test

A test temperature, lead wire sealing technology, applied in the direction of reducing greenhouse gases, nuclear reactor monitoring, reactors, etc., can solve problems such as thermal aging, affecting reactor control and protection actions, affecting the accuracy of core outlet temperature measurement, etc., to achieve good sealing Effect

Active Publication Date: 2020-06-23
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Application Information

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Problems solved by technology

This phenomenon may not only affect the measurement accuracy of the core outlet temperature, but may also cause thermal fatigue and thermal aging of the c

Method used

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  • Device for sealing temperature measurement lead in thermal oscillation test

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Embodiment Construction

[0021] The embodiments will be described in detail below in conjunction with the accompanying drawings.

[0022] The invention provides a device for sealing the lead wires used for temperature measurement in thermal oscillation tests, comprising: an upper flange and a lower flange, each of which is provided with a plurality of variable-diameter passages in the axial direction. A sheath and a ferrule matching the shape of the upper and lower diameter reducing channels are respectively arranged in the reducing channel, a hollow cylindrical ring is arranged between the sheath and the ferrule, and a lead groove is arranged in the sheath and the ferrule, and the cables are sequentially routed from the sheath to the ferrule. The sleeve, cylindrical ring, and ferrule pass through, and the upper and lower flanges are pressed and sealed by fasteners.

[0023] The sheath is divided into two halves along the axial direction, which need to be taken out separately during threading and taki...

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Abstract

The invention belongs to the technical field of thermal oscillation test temperature measurement, and particularly relates to a device for sealing a temperature measurement lead in a thermal oscillation test. The device comprises an upper flange and a lower flange, and a plurality of reducing channels with thin outer parts and thick inner parts are respectively formed in the axial directions of the two flanges. A sheath and a clamping sleeve, which are matched with the upper reducing channels and the lower reducing channels in shape, are arranged in the upper reducing channels and the lower reducing channels respectively. A hollow cylindrical ring is arranged between the sheath and the clamping sleeve. Lead grooves are formed in the sheath and the clamping sleeve. A cable sequentially passes through the sheath, the cylindrical ring and the clamping sleeve, and the upper flange and the lower flange are pressed and sealed through fasteners. A thermocouple temperature measuring line is led out by arranging a penetration piece on a rack; meanwhile, the sealing performance of the lead under various complex working conditions is guaranteed, the good sealing performance of the rack at thetemperature measurement lead under the complex test environment working conditions can be achieved, development of thermal oscillation test design is facilitated, and a sealing means is provided forother racks needing lead sealing.

Description

technical field [0001] The invention belongs to the technical field of thermal oscillation test temperature measurement, in particular to a device for sealing a lead wire of thermal oscillation test temperature measurement. Background technique [0002] In the fast reactor core, due to the uneven heat generation of various components, the temperature of the coolant flowing through different channels is different. When they are mixed in the upper chamber of the core, there will be complex near the central measurement column. High-frequency temperature oscillation phenomenon. This phenomenon may not only affect the measurement accuracy of the core outlet temperature, but may also cause thermal fatigue and thermal aging of the central measuring column above the core outlet, thereby affecting the control and protection actions of the reactor, thereby affecting its normal operation. Therefore, by designing a thermal oscillation test bench to simulate the high-frequency temperatu...

Claims

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Application Information

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IPC IPC(8): G21C17/112
CPCG21C17/112Y02E30/30
Inventor 曹琼赵泽武陆道纲
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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