Siphon water inlet structure suitable for full water test of large regulation and storage tank

The invention discloses a siphon water inlet structure suitable for a full water test of a large regulation and storage tank. The siphon water inlet structure comprises a dam body, a water inlet channel and a regulation and storage tank which are respectively arranged on two sides of the dam body, and a siphon pipeline of which two ends are respectively communicated with the water inlet channel and the regulation and storage tank, a filter screen is arranged at the water inlet end of the siphon pipeline, and a net bag detachably connected with the filter screen is arranged at the outer end of the filter screen; a gas-liquid exchange port is formed in the top end of the siphon pipeline, and a first valve is arranged at the gas-liquid exchange port; the dam body is provided with a plurality of fixing devices used for installing the siphon pipeline, and each fixing device comprises an upper pressing plate and a lower pressing plate which are arranged at the upper end and the lower end of the siphon pipeline resp