Water level measurement system
A water level measurement system according to an embodiment includes a support pipe installed in a water tank filled with a fluid to measure a water level and extending in a depth direction of the water tank, a support rod disposed on one side of the support pipe based on a central axis of the support pipe and extending in the depth direction of the water tank, a plurality of ultrasonic probes attached to the support rod and generating ultrasonic waves, and a water level calculator connected to the plurality of ultrasonic probes and calculating the water level of the water tank.
1 . A water level measurement system comprising:
a support pipe installed in a water tank filled with a fluid to measure a water level and extending in a depth direction of the water tank;
a support rod disposed within the support pipe where the water is filled and eccentric with respect to a central axis of the support pipe, the support rod extending in the depth direction of the water tank, wherein an ultrasonic propagation region that inhibits generation of bubbles or steam is formed between the support rod and an inner wall of the support pipe;
a plurality of ultrasonic probes attached to a lateral surface of the support rod facing a far-side of the inner wall of the support pipe and configured to emit ultrasonic waves in a horizontal direction toward the inner wall of the support pipe and detect ultrasonic waves reflected back from the inner wall of the support pipe, and
a water level calculator connected to the plurality of ultrasonic probes and calculating the water level of the water tank,
wherein a number of the ultrasonic probes submerged in the water varies depending on the water level.
2 . The water level measurement system of claim 1 , wherein
the support rod is in contact with the inner wall of the support pipe.
3 . The water level measurement system of 1 , wherein
the water level calculator calculates the water level of the water tank by using a number of ultrasonic probes that detect signals of reflected waves reflected back from the inner wall of the support pipe among the plurality of ultrasonic probes.
4 . The water level measurement system of 3 , wherein
when the number of the plurality of ultrasonic probes is N, a length of the support rod is L, and the number of ultrasonic probes detecting the signal of the reflected wave is S, the water level of the water tank is calculated as (L/N)*S.
5 . The water level measurement system of 1 , wherein
the plurality of ultrasonic probes are disposed in the depth direction of the water tank.
6 . The water level measurement system of 1 , further comprising
a fixing member fixing the ultrasonic probe to the support rod.
7 . The water level measurement system of 1 , wherein
the water tank includes a nuclear fuel reloading tank or a nuclear fuel storage tank of a nuclear power plant.