A radiation-resistant and high-temperature resistant pressure sensor
A pressure sensor, high temperature resistant technology, applied in fluid pressure measurement using inductance change, etc., can solve the problem of not being able to measure 600 ℃ high temperature metal liquid and gas pressure, etc., achieve great application potential, precise structure, small size effect
Active Publication Date: 2016-03-09
48TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide a radiation-resistant and high-temperature resistant pressure sensor to solve the problem that the existing sensor cannot measure the pressure of the 600°C high-temperature metal liquid and gas in the nuclear reaction system, and to realize the pressure sensor in the nuclear reaction system. Reliable application in environments such as high temperature and strong radiation
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[0015] Such as Figure 1-Figure 3 As shown, the external dimensions of the pressure sensor in one embodiment of the present invention are Φ70mm×160mm, and mainly consist of two parts: the first stage pressure-displacement conversion mechanism and the second stage bridge differential inductance converter.
[0016] The first-stage pressure-displacement conversion mechanism includes a casing 10, and the inside of the casing 10 is a vacuum; one side of the casing 10 is fixedly connected with a base 1, and the pressure conduit 3 and the movable plate 6 in the threaded pipe joint 2 on the other side of the casing 10 pass through the piston. 4 connection, the piston 4 is located at the eccentric position of the movable plate 6 (that is, not at the center of the movable plate), the limit groove 7 limits the displacement distance of the movable plate 6, the movable plate 6 and the spring tube 8 are connected by a pad 11, and the spring tube The other end of 8 is welded to the inner wal...
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Abstract
The invention discloses a radiation-resistant high-temperature-resistant pressure sensor which is used for measuring high-temperature metal liquid and gas at the temperature of 600 DEG C in a nuclear reaction system. The radiation-resistant high-temperature-resistant pressure sensor is a key special component in a nuclear reactor power supply and mainly comprises a first-level pressure displacement conversion mechanism and a second-level bridge-type differential inductance converter. According to the radiation-resistant high-temperature-resistant pressure sensor, high-temperature fluid pressure is converted into push force through the pressure displacement conversion mechanism, push force pushes a magnetism material to generate displacement so as to cause changes of a coil inductance value, and changes of inductance are detected through the bridge-type differential inductance converter and converted into electrical signals to be output. Due to the precise mechanical structure, the radiation-resistant high-temperature-resistant pressure sensor can be reliably used in complex environments, such as a high-temperature environment or a strong-radiation environment, and has a great significance in guaranteeing development of nuclear techniques of China in the future.
Description
technical field [0001] The invention relates to the field of pressure parameter measurement of a nuclear reactor power supply system, in particular to a radiation-resistant and high-temperature resistant pressure sensor. Background technique [0002] Pressure measurement in environments such as high temperature and strong radiation is one of the key points and difficulties of measurement and control technology. Nuclear reactions and other fields often require pressure measurement and control in environments such as high temperature and strong radiation. High-performance radiation-resistant and high-temperature resistant small pressure sensors are one of the key devices in the above-mentioned fields. [0003] At present, high-temperature pressure sensors mainly include alloy film high-temperature pressure sensors, diffused silicon high-temperature pressure sensors, and SOI and SiC high-temperature pressure sensors. Among them, the output signal of the alloy thin film high te...
Claims
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IPC IPC(8): G01L9/10
Inventor 王栋张建国颜志红金忠蓝镇立
Owner 48TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP