Heavy anticorrosive insulated conversion film and leakage improvement method of track circuit ballast bed

Abstract

The invention discloses a heavy anticorrosive insulated conversion film and a leakage improvement method of a track circuit ballast bed. The heavy anticorrosive insulated conversion film comprises the following raw materials in percentage by mass: 15%-28% of epoxy resin, 15%-28% of coal tar pitch liquid, 15%-28% of matrix formed by polyurethane, 16%-26% of an anti-rust extender pigment and 12%-16% of a dispersion medium, wherein the anti-rust extender pigment comprises aluminite powder, barium metaborate and barium metaborate; the dispersion medium comprises butanol, heavy benzene and acetone; the leakage improvement method of the track circuit ballast bed comprises the following steps: firstly, dismantling a cover board and a steel rain from a sleeper, polishing and descaling the surface; spraying the heavy anticorrosive insulated conversion film on the surfaces of the polished and descaled cover board and steel rain; and finally catalyzing with the heavy anticorrosive insulated conversion film to 40-55 DEG C, and remounting the cover board and the steel rain on the sleeper. According to the heavy anticorrosive insulated conversion film, existing facility of the track circuit is not changed; the insulation resistance of the track on the ground is effectively improved; the implementation cost is low; and the efficiency is high.

Description

technical field [0001] The invention relates to a method for regulating railway signals, in particular to a method for regulating the leakage of a heavy-duty anti-corrosion insulating conversion film and a track circuit track bed. Background technique [0002] When the railway track bed polluted by metal dust and pulverized coal coexists with rainwater or humid environment, the resistance of ballast slag will drop sharply, causing the signal current transmitted by the rail conductor to flow into the ground. That is, the dielectric effect of rainwater pollutants short-circuits the transmission signal, causing track circuit failure and paralysis of the railway signal control system. [0003] In the 25Hz phase-sensitive track circuit of the electrified railway track section, the method of circuit technology transformation is used to eliminate the electrical signal loss of track leakage. Due to the complex environmental conditions of the track circuit, it is related to the degre...

AI Technical Summary

Problems solved by technology

That is, the dielectric effect of rainwater pollutants short-circuits the transmission signal, resulting in track circuit failure and paralysis of the railway signal control system

[0003] In the 25Hz phase-sensitive track circuit of the electrified railway track section, the method of circuit technology transformation is used to eliminate the electrical signal loss of track leakage. Due to the complex environmental conditions of the track circuit, it is related to the degree of pollution, humidity, length of rainwater immersion, and various Harmonic clutter frequency and large current interference and other factors are related, so it is difficult to work; use ballast bed cleaning and increase ballast resistance to prevent ballast bed leakage. After the ballast bed is cleaned and screened, it cannot be maintained for a long time, especially in heavy rain and continuous rainy weather, the fault state of the track circuit will still occur; the axle counting track circuit technology combined with the computer interlocking signal control technology is applied to the cargo track and the section tunnel track. During circuit protection, due to the complex environmental conditions of the switch section of the existing line railway, the interval tunnel or the dedicated freight line, the shunting operation is busy, and the design and arrangement of the axle counting sensor in the station is more difficult, especially in the freight yard where the shunting operation is frequently changed. The wrong code correction after the cargo line and the round-trip operation of the turnout section directly affect the safety of the operation, and the technical bottleneck still exists; while on the existing railway line, through the transformation of station equipment and the establishment of a standard loading mine platform cargo yard, it seems that from a theoretical point of view To rectify the leakage of the track circuit track bed, but because of the huge investment and the unbalanced cost performance, it is difficult to adopt

[0004] In addition, special attention should be paid to the fact that with the development of heavy-duty speed-up technology, the line shunting operation is busy, and the maintenance operation (skylight point) cycle is shortened, which has become another technical problem in the track circuit track bed leakage control

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