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Tank vehicle mounted breathing type safety valve

A safety valve and tanker technology, applied in safety valves, balance valves, valve devices, etc., can solve the problems of limited suction volume, poor stability and reliability, and achieve increased suction area, high reliability, and stable suction flow. Effect

Active Publication Date: 2007-08-08
XI AN RAILWAY TRANSPORTATION EQUIP
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a breathing safety valve for tank trucks, which solves the technical problems of limited suction volume, poor operation stability and reliability in the background technology

Method used

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  • Tank vehicle mounted breathing type safety valve

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Embodiment Construction

[0034] Referring to accompanying drawing 1, the upper end of barrel-shaped valve body 1 of the present invention is provided with bonnet 8, and bonnet 8 can be threadedly connected with valve body 1 by internal thread or external thread, and the junction of bonnet 8 and valve body 1 is provided with bonnet Lock nut 5 is advisable. When the quality of the medium is required to be high, a dust-proof net 13 can be provided at the bottom of the valve body 1 to prevent dust from accumulating, so as to ensure the reliability and tightness of the exhalation operation. The exhalation valve disc 2 is arranged in the valve body 1 and is in clearance fit with the valve body 1 . If the gap is small, the disc is prone to jamming; if the gap is large, it is easy to vibrate and the suction flow is limited. The gap between the exhalation valve disc 2 and the valve body 1 can be 0.08-0.25 mm. The gap between the exhaled disc 2 and the valve body 1 is preferably 0.1-0.2 mm. When the exhalati...

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Abstract

The invention relates to a breath safe valve used in the vehicle of railway. The valve body contains an output valve fin, while the output spring is embedded between the valve cover and the output valve fin. The space between the inlet valve fin and the output valve fin is arranged with an inlet valve sealing ring. The guide axle is contacted with the guide sheath. The adsorption spring base is at the outer end of the guide axle of inlet valve fin. The adsorption spring is embedded between the guide sheath and the adsorption spring base at the center of output valve fin. The sealing face between the output valve fin and the valve body is flat while the engage space is 0.08-0.25mm and the guide height h of output valve fin is 11-21mm. The sealing face between the output valve fin and the valve body is in the same plane with the lower end face of inlet valve fin, or higher than the lower end face. The invention has high reliability and stability.

Description

technical field [0001] The invention relates to a breathing safety valve, in particular to a breathing safety valve for a railway tank car. Background technique [0002] At present, the breathing safety valve used by my country's general railway tank cars is the HT272-00-91 breathing safety valve designed in 1960. As the technical development of railway tank cars tends to be high-speed and heavy-loaded, the breathing safety valve of HT272-00-91 can no longer meet the safety needs of railway tank cars. The specific disadvantages are as follows: [0003] 1. Unreasonable selection of parameters during spring design causes the deformation of the spring to exceed 80% of the test deformation during valve operation, which seriously affects the stability of the exhalation pressure of the breathing valve. [0004] 2. The inhaled air flow is long, and the direction of the air flow needs to be turned 180 degrees. The frictional resistance of the air flow is relatively large, which di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/196
Inventor 韩志坚郭小锋郑国忠侯军卢奎刚胡广寿肖卫金耀辉于从立
Owner XI AN RAILWAY TRANSPORTATION EQUIP
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