A detection system and method for oxides in a steel pipe

Abstract

The invention discloses a detection system for an oxide in a steel tube. The detection system comprises a microprocessor, an oxide detection sensor, an acceleration sensor, a power supply, a key-press, a memory, a communication port, an indicator light, three-dimensional display software and a permanent magnet, wherein the oxide detection sensor, the acceleration sensor, the power supply and the key-press are respectively connected to the microprocessor, the memory and the communication port are connected with the microprocessor to carry out two-way data transmission, the indicator light and the three-dimensional display software are connected with output of the microprocessor, and the permanent magnet is used for magnetizing the magnetic field strength of oxide in the steel tube. With the adoption of the detection system for the oxide in the steel tube, the problems of huge volume, complex installation and the like due to multiple sensor devices are avoided, tube bursting accidents due to the oxide can be reduced, and the loss is reduced.

Description

technical field [0001] The invention belongs to the technical field of oxide detection, and relates to a detection system and method for oxides in steel pipes. Background technique [0002] In power plant boiler accidents, explosion and leakage damage accidents of heating surface tubes (water wall tubes, superheater tubes, reheater tubes, economizer tubes, also known as "four tubes") are the most serious and common, accounting for about 100% of boiler accidents. 71.7%, the unplanned outage time caused by the "four-pipe" explosion of the thermal power plant boiler accounted for about 40% of the unplanned outage time of the unit, and the reduced power generation accounted for more than 50% of all accidents. main factor in the operation of the economy. Superheaters and reheaters, which are high-temperature and high-pressure pressure-bearing parts, have caused severe oxidation and corrosion of pipes due to the harsh environment they are used in. In particular, the existence of...

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Problems solved by technology

[0004] 1) The flow part inside the heating surface of the boiler is blocked, so that the metal heating surface of the boiler is partially overheated and the tube bursts;

[0005] 2) The peeled oxide scale entering the steam turbine will damage the flow part of the steam turbine and affect the stage efficiency of the steam turbine;

[0006] 3) If the peeled oxide skin is deposited between the valve core and the valve seat of the main steam valve of the steam turbine, it will cause the main steam valve of the steam turbine to jam, and the main steam valve will not be closed tightly when the unit rejects the load, which will cause the turbine to overspeed;

[0007] 4) The scale peeling will also affect the soda quality of the unit

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