Petroleum output liquid metering device

Abstract

The invention provides a petroleum output liquid metering device. The device comprises a butterfly-shaped spiral pipe; an inlet of the butterfly-shaped spiral pipe is a crude oil inlet; an outlet of the butterfly-shaped spiral pipe is connected with a cyclone separator; a storage tank is connected to a branch close to the outlet at the tail end of the butterfly-shaped spiral pipe through a pipeline; a straight pipe is further connected between the butterfly-shaped spiral pipe and the cyclone separator; the lower end of the cyclone separator is connected to the crude oil outlet through a liquidpipeline, and the upper end of the cyclone separator is connected to the crude oil outlet through a gas pipeline; a liquid flowmeter is arranged on the liquid pipeline; a gas flowmeter is arranged onthe gas pipeline; a float valve is arranged in the cyclone separator; and the lower end of the float valve is connected with a liquid valve, and the upper end of the float valve is connected with a gas valve. The device is compact in structure, small in size and high in flow fluctuation adaptability; and a super-gas-liquid separator technology is adopted, so that the gas-liquid separation is thorough, and the gas-liquid two-phase metering requirement can be met.

Description

Technical field [0001] The invention relates to the technical field of machinery, in particular to a petroleum produced liquid metering device. Background technique [0002] Crude oil production fluid is a mixed fluid. Due to the influence of many factors such as sand, water, gas, foamed oil, high viscosity, irregular flow, etc., there are many problems in the wellhead metering device of oil wells. The problem is that the measurement is inaccurate and the error is large. Another problem is the complex structure, high cost, and environmental pollution. [0003] Existing oil well metering mainly relies on gas and liquid two-phase separation metering. This metering method is a widely used and accepted metering method in China, but it is affected by incomplete separation of the separator, easy scaling of the inner wall, waxing and partial The low flow rate of oil wells, intermittent oil production problems, environmental pollution and many other factors can no longer meet the requirem...

AI Technical Summary

Problems solved by technology

The problems of this method are complex structure, large volume, high cost and frequent maintenance.

However, it is necessary to put the tipping bucket into a large tank for work, so the volume is large and the cost is high. According to the mechanical structure, when the weight of the tipping bucket is changed from the oil discharge state to the oil intake state, it is not completed in an instant, but within a certain period of time. During this period, a part of the liquid is lost without measurement, the higher the output, the greater the error, so this error must be calculated

In addition, repeated weighing of some crude oil hanging on the wall cannot solve the problem

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