Multifunctional fuel safety protecting device

Abstract

The invention relates to a multifunctional fuel safety protecting device which is characterized in that an elastic valve core consequently closing fuel and controlled by the pressure of the fuel is arranged at a fuel inlet pipe of the prior fuel reducing valve, the valve core is matched with a valve seat consequently closing the fuel, internal-close type tapered switch valve protecting a switch against abrasion and leakage is arranged at a fuel outlet pipe so as to achieve the purposes of preventing the abrasion and the leakage of the switch, accidently-unjointed pipe leakage, ultralow pipe pressure, pipe fuel supply stopping, and pipe-supplied fuel entering house, and automatically closing the fuel when a user forgets closing a fuel valve. In order to be convenient for starting the fuel for use, the top end of an upper casing is also provided with a starting switch which can automatically restore; in order to ensure the fuel safety protecting device is used more safely in high-pressure fuel, the proper position of the fuel inlet pipe is provided with a round ball valve core and a round ball valve core which are matched mutually; in order to ensure that the fuel safety protecting device can be normally safely used in low-pressure pipe fuel, the center of a lower casing is provided with a permanent magnet which is matched with a gag bit at the bottom of a pressure-adjusting pull rod.

Description

Technical field: [0001] The invention relates to a gas safety protection device, in particular to a multifunctional gas safety protection device with automatic shutdown for accidental gas leakage. Background technique: [0002] At present, there are various types of gas safety protection devices, and there are about three representative ones; the first type is an automatic closing safety protection device for excess flow gas leakage, and its disadvantage is that it can only be used in high-pressure or medium-pressure gas. It is used in low-pressure gas pipelines. When there is an accidental gas leakage, it fails to automatically shut down the gas effectively, which is useless; the second type is an automatic reverse closing safety protection device for gas leakage. Its disadvantage is that it can only ensure that If it is used within the pressure range, if the intake pressure is significantly higher than the set operating pressure range, it will automatically open and leak a...

AI Technical Summary

Problems solved by technology

[0002] At present, there are various types of gas safety protection devices, and there are about three representative ones; the first type is an automatic closing safety protection device for excess flow gas leakage, and its disadvantage is that it can only be used in high-pressure or medium-pressure gas. It is used in low-pressure gas pipelines. When there is an accidental gas leakage, it fails to automatically shut down the gas effectively, which is useless; the second type is an automatic reverse closing safety protection device for gas leakage. Its disadvantage is that it can only ensure that If it is used within the pressure range, if the intake pressure is significantly higher than the set operating pressure range, it will automatically open and leak air to cause greater danger; the third type is an electronically controlled alarm safety protection device, and its disadvantage is that it needs electric energy to operate. Power is a waste of electric energy. At the same time, manual maintenance is required. If the electronic alarm is polluted by kitchen fume, it will fail, and it is also useless.

Images