Output water pressurizing device of overflowing settling tank

Abstract

The invention discloses an output water pressurizing device of an overflowing settling tank, which is designed to pressurize output water from an overflowing settling tank. The output water pressurizing device of the overflowing settling tank is characterized in that the overflowing settling tank is connected with the upper part of a closed water tank through a high-level water tank; the top of the closed water tank is connected with a combined air vent valve and a water pressure sensor; the lower part of the closed water tank is connected with a water pump water suction pipe; the bottom of the closed water tank is connected with an emptying valve; a water output end of the water pump water suction pipe is connected and communicated with a water pump of a control cabinet, a check valve, an electric flow adjustment valve and a de-oiling tank. The pressurizing device is capable of automatically turning on and off the water pump according to pressure variation of the close water tank, and continuously adjusting the opening degree of the electric flow adjustment valve, so that the flow of output water of the overflowing settling tank and the flow of the water pump can be consistent, and the system can run continuously and safely; a water inlet pipe of the water tank and the water pump water suction pipe are arranged inside the closed water tank in an upper input and lower output manner, so that air in output water of the high-level water tank can be sufficiently separated out inside the tank and removed. Therefore, the cavitation phenomenon can be avoided. The pressurizing device uses an airtight method to pressurize the overflowing settling tank to output water, and has the advantages of good water supply continuity and high security property.

Description

technical field [0001] The invention relates to a pressurizing device for outlet water of an overflow settling tank, belonging to the technical field of crude oil dehydration. Background technique [0002] The overflow settling tank is crude oil dehydration equipment, and the extracted produced water overflows through the high-level water tank. The oil removal tank is used for secondary settlement of the effluent from the overflow settling tank. [0003] Due to the difference in station topography and height of equipment, sometimes the liquid level of the high water tank of the overflow settling tank is lower than the liquid level in the degreasing tank, or the difference between the two liquid levels is not enough to overcome the loss of pipeline water head, resulting in the overflow of the overflow settling tank The effluent cannot enter the degreasing tank. At this time, a pool (tank) is generally set in the middle, so that the outlet water of the overflow settling tank...

AI Technical Summary

Problems solved by technology

The disadvantage of this approach is that the water pump is not running continuously, which will affect the operation effect of the subsequent produced water equipment, increase the equipment, and increase the investment; if the produced water after oilfield treatment is used for water injection, the dissolved oxygen content of the produced water will be strictly controlled. The pool (tank) in the tank is an open container, which will increase the dissolved oxygen content of the produced water

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