Networked measuring system for rotating speeds and friction power consumption of group gas centrifuges

Abstract

The invention discloses a networked measuring system for the rotating speeds and friction power consumption of group gas centrifuges. The networked measuring system comprises a central control room, wherein a first host computer and a second host computer of the central control room are bidirectionally connected with an embedded system of at least one local detection station through an Ethernet bus; the embedded system of each local detection station is bidirectionally connected with an acquisition terminal of at least one local detection station through a CAN (Controller Area Network) bus or 485 bus; each acquisition terminal can be used for acquiring a frequency signal of a rack provided with 20 centrifuges; and the acquisition terminal is directly arranged on the rack. The networked measuring system has the advantages of low failure rate, small measuring error, high anti-jamming capability, short measuring period, high instantaneity, small occupied space, easiness for installation and low cost.

Description

technical field [0001] The invention relates to the technical field of networked measurement of rotational speed and frictional power consumption of grouped gas centrifuges in a nuclear fuel plant, in particular to a networked measurement system for the rotational speed and frictional power consumption of grouped gas centrifuges. Background technique [0002] The main equipment of a nuclear fuel enrichment plant is mainly centrifuges, auxiliary equipment and process piping connecting equipment. There are tens of thousands to hundreds of thousands of centrifuges in commercial nuclear fuel plants. To monitor the working state of the centrifuge is to measure the speed of the centrifuge rotor, judge whether the working state of the centrifuge is normal through the speed, and send out alarm and accident protection signals, and take corresponding technological measures automatically or manually to protect the centrifuge from damage . Therefore, the measurement system of centrifu...

AI Technical Summary

Problems solved by technology

Most of the electronic components used in this imported system are equivalent to the products before the 1970s in my country. The integration of components is low and the failure rate is high, especially the multi-channel analog switches, which are broken on average 3 to 4 per week. , computer equipment is only equivalent to the technical level of the United States in the 1960s, the failure rate is high, spare parts cannot be bought, and maintenance is difficult

[0006] 2. Large measurement error

Since the signal from the speed sensor of the gas centrifuge to the "on-site detection station" is a frequency signal transmission, the analog transmission is adopted, the distance is long, and the signal attenuation is large, especially in the low frequency band, resulting in large measurement errors

[0007] 3. Poor anti-interference ability

Due to the long transmission distance of the frequency signal, it is susceptible to on-site electromagnetic radiation interference, resulting in measurement failure

[0008] 4. The measurement period is long and the real-time performance is poor

In this way, the measurement period for the 1920 gas centrifuges to be cyclically measured once is relatively long, and the real-time performance is poor, and the faulty gas centrifuges cannot be found in time

[0009] 5. It takes up a lot of space, the installation is more troublesome, and the cost is relatively high

Hundreds of thousands of gas centrifuges need dozens of "on-site testing stations", which take up a lot of space to install and use

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