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Automatic stop valve for locomotive large air exhaust fault and stopping method

An automatic cut-off and exhaust technology, applied in the direction of valve devices, mechanical equipment, functional valve types, etc., can solve problems such as failure of the exhaust port, and achieve the effects of high reliability, small structural volume, and simple structural parts

Inactive Publication Date: 2017-10-13
ZHUZHOU YIXING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: how to automatically close the exhaust port when the exhaust port fails and the gas is continuously discharged from the exhaust port, so as to eliminate potential safety hazards

Method used

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  • Automatic stop valve for locomotive large air exhaust fault and stopping method
  • Automatic stop valve for locomotive large air exhaust fault and stopping method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 1 with figure 2 As shown, the automatic valve includes a valve body 2 and a piston 6. The valve body 2 is provided with a cavity, the piston 6 is installed in the cavity, and the piston 6 divides the cavity into a boosting cavity 4 and a decompression cavity 8. And exhaust port 9. The valve body 2 is also provided with an intake port 1. The intake port 1 is connected with the exhaust port 9. The piston 6 can move in the cavity in the valve body 2. When the piston 6 is close to the inside of the intake port 1, it can Block the air inlet 1 so that the air inlet 1 and the air outlet 9 are cut off. When the piston 6 is separated from the intake port 1, the intake port 1 and the exhaust port 9 are restored to a communicating state.

[0021] The piston 6 is installed in the cavity in the valve body 2, and the rear end of the piston 6 separates the cavity to form a closed pressurizing chamber 4. The front end of the piston 6 is set at the exhaust port 9, and th...

Embodiment 2

[0027] The difference from the first embodiment is that the front end of the piston 6 is also provided with an annular sealing ring. When the front end of the piston 6 blocks the air inlet 1, the sealing ring and the air inlet 1 are tightly attached to the air inlet 1 1 Seal it. The sealing ring can be directly pasted on the front end of the piston 6, or a groove can be formed on the front end of the piston 6, and then the sealing ring can be embedded in the groove.

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PUM

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Abstract

The invention provides an automatic stop valve for a locomotive large air exhaust fault. A valve body is internally provided with a cavity, and a piston is installed in the cavity and divides the cavity into a pressure increasing cavity, a pressure reducing cavity and an exhaust port; an air inlet is further formed in the valve body and communicates with the exhaust port, and the piston can block the air inlet to enable the air inlet not to communicate with the exhaust port; a current limiting hole which penetrates through the piston is formed in the piston, one end of the current limiting hole communicates with the air inlet, and the other end of the current limiting hole communicates with the pressure increasing cavity; and the sealed annular pressure reducing cavity is formed by the side edge of the piston and the valve body, and the valve body is provided with a pressure relief hole which communicates with the pressure reducing cavity. According to the automatic stop valve for the locomotive large air exhaust fault, the potential safety hazard that the exhaust port of a locomotive cannot be closed is solved, the structural size is small, external power does not exist, external control does not exist, structural parts of the automatic stop valve itself are simple, the reliability is very high, and new fault point cannot be added even after the automatic stop valve is out of operation.

Description

Technical field [0001] The invention relates to an automatic shut-off valve, in particular to an automatic shut-off valve used on a locomotive. Background technique [0002] At present, the exhaust port of locomotive does not have a large exhaust automatic shut-off valve. When the locomotive fails, the exhaust port may not be closed, and the gas will be continuously discharged from the exhaust port, resulting in a drop in the air pressure of the entire air source system, which will lead to The wind component fails and even causes a safety accident. Summary of the invention [0003] The technical problem to be solved by the present invention is: how to automatically close the exhaust port when the exhaust port fails and the gas is continuously discharged from the exhaust port to eliminate hidden safety hazards. [0004] In view of the above-mentioned problems, the technical solution proposed by the present invention is: an automatic shut-off valve for large exhaust air failure of a ...

Claims

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Application Information

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IPC IPC(8): F16K21/04
CPCF16K21/04
Inventor 谢成昆余双杰宴坤谷智义郭辉建
Owner ZHUZHOU YIXING TECH CO LTD