| 摘要 |
PURPOSE: A protection device for an underwater motor pump and a pump component installed in an upper protection of underground water when an underground water pipe is frozen is provided to release excess water pressure to the outside by automatically operating an excess water pressure prevention valve in a standby state in case of excess water pressure in a water supply pipe inside an upper protection of underground water. CONSTITUTION: A protection device for an underwater motor pump and a pump component installed in an upper protection of underground water when an underground water pipe is frozen comprises: an upper protection of underground water installed to one side of the inner bottom to let a water pipe pass through the inside and the outside, a water supply pipe arranged in the upper protection of underground water and equipped with an underground water meter on the top, a connecting pipe connected to one side of the underground water meter and inserted/coupled to a water pipe, and an excess water pressure prevention valve(40) coupled to the front end of a water pressure measuring tube(23) installed to a branch pipe for water collection connected to the outer circumference of the water supply pipe. |
