Adjustable fireless return device for locomotive

Abstract

The invention discloses a fireless returning device for an adjustable locomotive. The fireless returning device comprises a valve body, a horizontal channel is formed in the valve body, one end of the channel is provided with a joint, and the other end of the channel is provided with a choke plug. A filter element, a pressure regulating valve assembly and a one-way valve assembly are sequentially mounted in the channel in the direction from the joint to the choke plug. The outlet pressure of the fireless returning device can be freely adjusted according to demands, the demands for fireless returning pressure set values of railways in different nations are met, pressure values can be visibly read on the valve body, and convenience and quickness are achieved. The structure is compact, occupied space and the number of middle connecting pieces are reduced, tube layout of the locomotive is facilitated, and the cost is lowered. The fireless returning device is widely applied, and can be applied to other various kinds of air wind equipment in which filtering and decompression are needed by changing the choke plug.

Description

technical field [0001] The invention relates to a fireless return device, in particular to an adjustable fireless return device for locomotives. Background technique [0002] When the locomotive is sent back without fire (the diesel engine on the locomotive does not start, and it is attached to the train formation as a vehicle), the wind from the train duct should be directed to the main air duct of the locomotive, so that the fire-free return locomotive will follow the braking when the train brakes. . [0003] The current locomotive air fire-free return device adopts the dust filter check valve specified in the TB / T1041-74 standard. This valve only has the functions of dust filter and check, and has no pressure adjustment function. When the locomotive is returned without fire, the system must be adjusted The dynamic valve makes the brake cylinder pressure of the locomotive meet the relevant requirements. After the locomotive is returned to the destination, the pressure val...

AI Technical Summary

Problems solved by technology

[0003] The current non-fire air return device for locomotives uses the dust filter check valve specified in the TB / T1041-74 standard. This valve only has dust filtering and non-return functions, and has no pressure adjustment function. The dynamic valve makes the pressure of the brake cylinder of the locomotive meet the relevant requirements. After the locomotive returns to the destination, the pressure value of the brake valve needs to be adjusted back to the original set value, which makes the setting of the no-fire return complicated. If it is not set in place, it is easy to cause safety accidents

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