The gas pressure regulator can not only change the high-pressure petroleum gas in the bottle to low-pressure petroleum gas (from 980kPa to about 100kPa), but also stabilize the low-pressure gas within the pressure range suitable for safe combustion of stoves. That is to say, the oil gas output through it, the air pressure at the fire hole of the stove, is about 2940Pa higher than the outside atmospheric pressure at any time, so in fact, the pressure regulator is an automatic voltage stabilizing device.
People are accustomed to call it a pressure reducer, because they only noticed its function of reducing voltage, but ignored its ability to stabilize voltage. The ingenuity of the entire design of the voltage regulator is reflected in its ability to stabilize voltage. This article intends to make a detailed explanation in this regard. The figure below is the structure diagram of the pressure regulator, which is mainly composed of handwheel, air inlet pipe, upper valve cover, lower valve cover, rubber membrane, air inlet nozzle, valve pad, a small lever, air outlet pipe and other parts. In the middle of the regulator is a circular rubber membrane, which divides the 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. There is a small hole with a diameter of 0.8 mm on the edge of the upper valve cover, which allows the upper air chamber to communicate with the outside. This hole is vividly called the breathing hole. There is a lever made of fine brass in the lower air chamber, the total length is about 5cm, and the rotation performance is very sensitive. The right end of the lever is connected to the center of the rubber film, and the left end is glued to the valve pad and fastened to the intake nozzle to dampen the high-pressure petroleum gas sprayed. The distance between the left and right ends of the lever from the fulcrum is short on the left and long on the right, which is a unequal arm lever. Its performance characteristics are: a small change in the force at the right end of the lever will inevitably cause a greater change in the force at the left end of the lever. In principle, the force is amplified; in effect, the damping effect on high-pressure gas is increased.