Fuel gas connecting device with pressure stabilization and superflow protection function

Abstract

The invention discloses a fuel gas connecting device with pressure stabilization and a superflow protection function. When the external air intake pressure is too large, an ejector rod is subjected toan air intake pushing force effect so as to move toward a deformable partition piece, and an airflow space between a bulge loop part and a first valve port is gradually reduced, so that the flow passing through the first valve port cannot be suddenly increased; when the external air intake pressure is reduced, the air intake pushing force on the ejector rod is further reduced, at the moment, under the elastic resetting function of a first spring, the deformable partition piece and the ejector rod move reversely, and the airflow space between the bulge loop part and the first valve port is gradually increased, so that the flow passing through the first valve port cannot be suddenly reduced, and the pressure stability control is facilitated; and in addition, when a superflow phenomenon occurs at the outer end of a second valve port, for example, when a connected gas appliance is too fast in flame combustion, a second piston overcomes the elastic force of a third spring under the actionof larger negative pressure so as to seal the second valve port, and only a straight small hole is left for venting, so that the flame of the gas appliance becomes a low fire, and the superflow protection function is realized.

Description

technical field [0001] The invention relates to a gas connection device with functions of voltage stabilization and overflow protection. Background technique [0002] In daily life, people often use gas appliances for cooking, heating, lighting, etc. Therefore, gas safety is a problem that people attach great importance to. At present, the gas appliances on the market generally adopt a simple connection structure with the gas source, which cannot deal with some emergencies. For example, the connectors between some gas appliances and the gas source do not have the current limiting function. When the output air flow is too high, the combustion flame of the gas appliance will become abnormally high, which is prone to dangers such as overloading of the gas appliance, burning out or even fire; in addition, when a fire occurs, the general gas appliance and its connection structure cannot The gas flow is cut off at the root, and the safety is poor. [0003] Therefore, how to over...

AI Technical Summary

Problems solved by technology

At present, the gas appliances on the market generally adopt a simple connection structure with the gas source, which cannot deal with some emergencies. For example, the connectors between some gas appliances and the gas source do not have the current limiting function. When the output air flow is too high, the combustion flame of the gas appliance will become abnormally high, which is prone to dangers such as overloading of the gas appliance, burning out or even fire; in addition, when a fire occurs, the general gas appliance and its connection structure cannot The gas flow is cut off at the root, which is less safe

Images