Rapid exhaust valves for railway vehicles and piping systems for railway vehicles

Abstract

The present invention provides a rapid exhaust valve for a railway vehicle automatic door and a piping system thereof capable of keeping the exhaust time short within a predetermined time. The exhaust valve has an inflow inlet and an exhaust port formed on a valve body accommodating portion having a spherical portion formed in a part of the inner periphery of the valve body; The valve body having a spherical surface is rotatably inserted into the opening; on the valve body, an assembly groove and a plurality of through holes are formed, and the plurality of through holes communicate with the aforementioned inflow and outflow ports or exhaust ports, and the aforementioned assembly grooves are connected to these The through opening is opposed to the aforementioned outflow inlet in the crossing direction; a sealing member that seals the aforementioned outflow inlet or exhaust port is assembled on the fitting groove; when the aforementioned opening is covered with a cover member, a certain 1 Two aforementioned outflow inlets or exhaust ports are hermetically closed; the aforementioned outflow inlet and exhaust port, or the aforementioned outflow inlets can be communicated with each other through the aforementioned through openings, and it is set to be able to properly adjust the area of ​​the exhaust port to ensure emergency or safety The exhaust time from the piping for automatic door opening and closing equipment, such as when securing the time, is set to be constant.

Description

technical field [0001] The present invention relates to a rapid exhaust valve for a railway vehicle and a piping system using the same. The rapid exhaust valve for a railway vehicle is used, for example, in piping of an automatic door opening and closing device using air pressure for a railway vehicle, and the like. It is installed to close the flow path of the pipeline on the air pressure supply side to discharge the air pressure in the pressure cylinder of the door opening and closing device formed by the air pressure piston cylinder. Background technique [0002] Conventionally, in automatic door opening and closing devices using air pressure for railway vehicles, it is required to quickly evacuate outside the railway vehicle when an abnormal situation occurs, and to enter the railway vehicle in a short time when repair / maintenance is required. inside, so the door can be opened manually from inside or outside the rolling stock. For this reason, a cock valve for abnormali...

AI Technical Summary

Problems solved by technology

[0033] Because of this, in conventional two-way spherical plug valves with vent holes and two-way and three-way plug valves with vent holes, it was not possible to increase the diameter of the port hole for exhaust, and it was not possible to maintain the compactness of the valve. When used as a railway vehicle, there are cases where it takes longer to discharge the air pressure in the piping of the door opening and closing device until the door can be manually opened in case of abnormality, evacuation in case of abnormality, or Impossible to quickly carry out repairs or maintenance etc.

[0034] Furthermore, even if it is the same railway vehicle, the discharge capacity of compressed air changes according to the number of doors that are opened and the piping position of the valve, so the exhaust time changes, and the piping layout differs depending on the type of railway vehicle. Therefore, the exhaust time also changes according to the difference in piping capacity. Therefore, when using the above-mentioned two-way spherical cock valve or two-way or three-way cock valve, it is difficult to adjust the area of ​​the exhaust port to shorten the exhaust time within a predetermined time.

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