Gravity box for liquid level measurement of tubular pump oil system

The utility model relates to the technical field of tubular pumps, in particular to a gravity box for measuring the liquid level of an oil system of a tubular pump, which comprises a gravity box main body, and a throw-in type liquid level transmitter is fixedly arranged on the upper surface of the gravity box main body. A bottom end pressure measuring head of the throw-in type liquid level transmitter is arranged in the gravity box main body; the beneficial effects are that the highest liquid level in the oil storage tank is only 0.5 m, a common throw-in type liquid level transmitter has a shallow liquid level measurement blind area and cannot be directly installed in the oil storage tank for use, and the gravity box located at a position 1.5 m below the oil storage tank measures the liquid pressure in the gravity box according to the principle that the deeper the liquid level is, the larger the pressure is; the liquid pressure of the oil storage tank is measured and calculated, and the measurement blind area