An automatic control method for diesel locomotives used in highway gas tunnels

Abstract

The invention discloses a diesel locomotive automatic control method used for a highway gas tunnel. The method includes the following steps that 1, firstly, an automatic control system is arranged on a locomotive, wherein the system comprises the following structures of a low-concentration methane sensor and a control main machine; 2, when the locomotive is used, the low-concentration methane sensor is used for detecting and collecting methane volume concentration of air at the position where the locomotive is located, and a detection parameter signal is transmitted to the control main machine; 3, after the control main machine receives the methane volume concentration detection parameter signal and comparative judgment is conducted, the control main machine sends out a sound and light alarm, and a flameout device of the diesel locomotive is made to move so as to enable the diesel locomotive to flamed out; 4, when the methane volume concentration is larger than or equal to an electricity recovery set limit value, the system is controlled to block the diesel locomotive automatically. According to the control method, the diesel locomotive can be controlled to work in a safe state in the gas tunnel, and once gas exceeds a limit, the control system conducts alarming, electricity interruption, flameout and locking immediately.

Description

technical field [0001] The patent of the present invention relates to an automatic control method for diesel locomotives used in highway gas tunnels. Background technique [0002] At present, more than 200 gas tunnels have been built or are under construction in my country, and the number of new gas tunnels under construction is increasing at a rate of 30 to 50 every year. At present, the tunnel mainly adopts manual and automatic inspection of environmental gas. Full-time gas inspectors are assigned during construction, and the CH in the tunnel is checked using an optical tile detector. 4 Carry out detection, and install a gas monitoring system to monitor environmental gas at the same time. [0003] For the control of large diesel locomotives in the tunnel, the announcement number CN201991566 discloses a vehicle-mounted gas monitoring system, which is characterized in that it includes a control substation connected to the computer maintenance system through a data interfac...

AI Technical Summary

Problems solved by technology

However, this technical solution still has the defects of complex structure, poor control sensitivity, many and scattered components, and poor reliability of the electronic flame extinguishing device (using the principle of oil cut-off and power-off flameout), which is not conducive to the gas protection during the road tunnel construction process. Surveillance and Construction Safety