Gas engine air supply pipe interlocking valve mechanism

Abstract

The invention discloses an interlocking valve mechanism. The interlocking valve mechanism is connected with a gas filter and a gas spraying system in an air supply pipe to control the air supply pipe to be opened and closed. The gas engine air supply pipe interlocking valve mechanism comprises a first electromagnetic valve, a first manual valve and a gas discharging pipe, the first electromagnetic valve is arranged between the gas filter and the gas spraying system in the air supply pipe, the first manual valve is arranged at the position, at the back end of the first electromagnetic valve, of the air supply pipe, the gas discharging pipe is communicated with the portion, between the gas filter and the gas spraying system, of the air supply pipe and used for controlling residual gas in the air supply pipe to discharge the residual gas, and a second electromagnetic valve and a second manual valve are sequentially arranged on the gas discharging pipe in the gas discharging direction. When the electromagnetic valves lose efficiency, the air supply pipe can be manually controlled through the interlocking valve mechanism; after an engine is stopped, the residual gas in the air supply pipe can be timely discharged out of the pipe, and potential safety hazards are eliminated.

Description

technical field [0001] The invention relates to a gas engine gas supply pipeline system, in particular to a gas engine gas supply pipeline interlock valve mechanism. Background technique [0002] The solenoid valve is used in the air supply pipeline system of the gas engine, and its opening and closing are controlled by the electronic control unit (ECU). At present, the existing gas engine gas supply pipeline system such as figure 1 shown. When the gas engine is working normally, the gas supply system 1' starts the gas supply, the solenoid valve 4' controlled by the ECU opens, the gas passes through the gas supply pipeline 2', is filtered by the gas filter 3' and is aligned with the gas injection system 5'. The flow and pressure control is supplied to the gas engine 6'; when the gas engine needs to be shut down, the gas supply system 1' closes the gas supply, the solenoid valve 4' controlled by the ECU is closed, and the supply to the gas engine 6' is stopped. [0003] Th...

AI Technical Summary

Problems solved by technology

[0003] The defect of the existing gas engine gas supply pipeline system is that: the ECU controls the opening and closing of the solenoid valve. Once the solenoid valve fails, it does not have the function of manually closing the gas supply pipeline; after the engine stops, the pipeline between the gas supply system and the engine There is still gas remaining, which cannot be discharged, and there are potential safety hazards

In particular, the gas supply pipeline of many engines is relatively long (such as marine engines, the gas supply pipeline is generally connected from the deck of the ship to the engine compartment), and a large amount of gas remaining in the pipeline will cause a greater safety hazard

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