Oil tank water discharge liquid storage self force driving oil blocking device

Abstract

The invention relates to an oil tank water discharge liquid storage self force driving oil blocking device. A water discharge valve is arranged on a water discharge groove, the upper end of the water discharge groove is provided with a liquid dividing tank, the liquid dividing tank and the water discharge groove are separated into two spaces by a separation plate, are communicated through a waterpassing hole arranged on the separation plate and form the fall head, a buoyancy control valve body is arranged at the water passing hole, a pressure relief hole is arranged on the valve body, a floating body with the specific gravity greater than that of the oil but smaller than that of water is arranged in the liquid dividing box for pressing the pressure relief hole for forming a closed state,an upper guide rod is arranged on the floating body and is in gap matching with a guide hole arranged on a positioning frame, the lower end of the floating body is connected with a lower guide rod, the lower guide rod penetrates through the pressure relief hole, in addition, a flow passing gap is formed, the lower part of the lower guide rod is in gap matching with a guide hole of a guide seat, avalve body opening driving device is arranged on the lower guide rod, and the liquid dividing box is provided with a liquid inlet pipe. The oil and water specific gravity differences are utilized forforming different buoyancies to control the sinking and floating of the floating body, the opening for discharging the bottom water in the oil tank can be realized, the automatic closing during oil liquid contact can also be realized, and oil liquid is prevented from flowing out in large quantities during the bottom water discharge.

Description

technical field [0001] The invention relates to an oil tank bottom water discharge device of an oil storage tank, in particular to a liquid storage self-driven oil blocking device for oil tank drainage. Background technique [0002] At present, the oil tank bottom water discharge device of the oil storage tank in the oil depot is usually installed at the bottom of the oil tank with a sewage collection tank, a water discharge pipe and a common valve to discharge the water at the bottom of the oil tank; Water pipes and ordinary valves are installed, but siphon water discharge devices are used for discharge. These two bottom water discharge devices rely on the operator to control the start and end of the bottom water discharge process by operating the ordinary valve based on experience, so that the end of each bottom water discharge is oily, and there is a possibility of misoperation and oil leakage , causing oil loss, and will pollute the environment, and even endanger safety...

AI Technical Summary

Problems solved by technology

There is also a device that detects the position of the oil-water interface based on the probe, and controls the drainage process by an electric valve, but the device must have a power supply, and the structure is complex, with many influencing factors, and reliability is not easy to guarantee, especially the use of electric valves has problems affecting the safety of oil depots.

There is also a single-float water cut-off valve that uses the difference in specific gravity of the liquid flow to control the drainage process. This single-float water cut-off valve must first let go of the oil storage head before discharging water, and it is necessary to manually lift the float to open the valve core to drain the water. pressure, which not only increases the amount of oil carried in the drainage process, but also is greatly affected by human factors, which reduces the reliability of the operation

Images