| 摘要 |
The present invention relates to a low pressure safety valve system detecting the abnormal pressure of gas in a low pressure gas pipe, and then discharging the gas, wherein the low pressure safety valve system comprises: a lower outer container filled with water and forming certain head pressure, and connected to a low pressure gas pipe so that a seal is destroyed and the water is jet to the upper side of the lower outer container when gas pressure exceeds predetermined pressure; a lower inner container filled with the water and forming certain head pressure, and formed inside the outer container; a safety valve lower sheet shaped into a hopper and formed at the upper side of the lower outer container, having a bottom part communicating with the lower outer container with airtightness, and having an opened top part through which the gas transferred from the lower outer container passes; a safety valve device placed at the upper side of the safety lower sheet and detachably installed at the opened top part with the airtightness; an upper outer container shaped into a cylinder, having the bottom adhering to the top of the lower outer container and the lower side of the safety valve lower sheet with the airtightness, surrounding the safety valve lower sheet and the safety valve device, and having the top to which the bottom of a gas opening part adheres with the airtightness; and the gas opening part shaped into the hopper, and having the bottom adhering to the upper side of the upper outer container with the airtightness, and having an upper side connected to a pipe so that the internal gas is discharged to outside. |
