Will the gas in the gas pressure regulator leak through the release hole, threatening our safety?
In the middle of the gas pressure regulator is a circular rubber film, which divides the pressure regulator into two upper and lower air chambers. There is a spring in the upper air chamber, the upper end is connected with the adjusting screw cover, and the lower end is connected with the rubber film. The upper valve cover There is a small hole with a diameter of 0.8mm at the edge, so that the upper air chamber communicates with the outside. The image of the hole is called the breathing hole. When the upstream high-pressure gas intake pipe opens the valve pad and enters the lower air chamber, along with the gas in the lower air chamber. When the number increases, the pressure in the lower chamber will increase, forcing the rubber film to bulge upwards. The volume of the upper chamber gradually becomes smaller. When the upper chamber pressure is stronger than the atmospheric pressure, the indoor air is slowly discharged from the breathing hole, completing the pressure regulator. During an exhalation process, in this process, the right end of the lever is moved up, and the left end is pressed down, so that the intake nozzle is gradually closed, the air supply is stopped, and the pressure of the lower air chamber is no longer raised. When the downstream valve is opened, due to the gas direction External output, the pressure of the lower air chamber becomes smaller, the rubber film is concave, the right end of the lever is moved downward, the left end is moved upward, the valve pad is opened, and the high pressure gas enters the lower air chamber. In this process, the upper air chamber gradually becomes larger. When his pressure is less than the external atmospheric pressure, the air enters the upper air chamber from the outside through the breathing hole, and the completion is completed. One suction process of the pressure regulator. The small hole is drilled on the edge of the bonnet and close to the rubber membrane. If the air pressure in the lower air chamber is too large, the rubber film will bulge upwards, immediately blocking the breathing hole and preventing the gas. The air in the room is discharged from the breathing hole. According to the law of Boyle, the air of a certain mass sealed in the upper air chamber becomes larger in the process of decreasing volume. That is, pV=constant. The rubber film is prevented from being damaged due to the excessively large air pressure difference, and the gas leakage accident caused by the diaphragm damage is prevented, so that the gas in the gas pressure regulator does not leak through the breathing hole.
(Source: Hebei Zhenxing Gas Regulator Co., Ltd. gas pressure regulator http://)
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