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Method for measuring the level of crude oil in the outer floating roof crude oil storage tank

A liquid level height, crude oil storage tank technology, applied in the liquid level indicator of physical variable measurement, etc., can solve the problems of easy accumulation of large sludge, measurement error, and blockage of the lower end flow hole of the storage tank metering tube, etc., to achieve the equipment structure Simple, reduce measurement error, easy to operate

Active Publication Date: 2016-12-21
ZHENHUA OIL YINGKOU STORAGE & TRANSPORTATION CO LTD
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, affected by the settlement of crude oil heavy components, a large amount of oil sludge and other impurities are easy to accumulate at the bottom of the storage tank, which leads to the blockage of the flow hole at the lower end of the metering pipe of the storage tank, so that the liquid level in the metering pipe of the storage tank is the same as that of the crude oil storage tank with an outer floating roof. The actual liquid level of the crude oil in the interior is inconsistent, resulting in measurement errors

Method used

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  • Method for measuring the level of crude oil in the outer floating roof crude oil storage tank
  • Method for measuring the level of crude oil in the outer floating roof crude oil storage tank

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Embodiment 1

[0038] This embodiment is used to illustrate the method for measuring the liquid level of crude oil in an outer floating roof crude oil storage tank according to the present invention.

[0039] Such as figure 1 and figure 2As shown, the external floating roof crude oil storage tank equipment used when measuring the crude oil liquid level in the external floating roof crude oil storage tank includes: floating plate liquid level calibration device 2, which is used to measure the liquid level at the sampling port of the floating plate of the storage tank; The metering device 3 is used to measure the liquid level in the metering tube of the metering device 3; the zero point calibration device 1 is used to measure the top of the tank wall corresponding to the floating plate sampling port and the tank wall corresponding to the metering tube of the storage tank The height difference at the top.

[0040] Wherein, the zero point calibration device 1 includes 3 U-shaped tubes marked ...

Embodiment 2

[0046] This embodiment is used to illustrate the method for measuring the liquid level of crude oil in an outer floating roof crude oil storage tank according to the present invention.

[0047] Such as figure 1 and figure 2 As shown, the external floating roof crude oil storage tank equipment used when measuring the crude oil liquid level in the external floating roof crude oil storage tank includes: floating plate liquid level calibration device 2, which is used to measure the liquid level at the sampling port of the floating plate of the storage tank; The metering device 3 is used to measure the liquid level in the metering tube of the metering device 3; the zero point calibration device 1 is used to measure the top of the tank wall corresponding to the floating plate sampling port and the tank wall corresponding to the metering tube of the storage tank The height difference at the top.

[0048] Wherein, the zero point calibration device 1 includes two U-shaped tubes mark...

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Abstract

The invention relates to the field of crude oil storage tank liquid level measurement and discloses a method for measuring the level of crude oil in an outer floating roof crude oil storage tank. The method comprises following steps: a zero calibration device (1) is used to measure the height difference H of the tops of the tank walls corresponding to a floating plate sampling port and a storage tank metering tube; a floating plate liquid level calibration device (2) is used to measure the liquid level h at the storage tank floating plate sampling port, the liquid level height h is calibrated by the height difference H to obtain the calibrated liquid level height h'; a metering device (3) is used for measuring the liquid level height h1 of crude oil in the storage tank metering tube of the metering device; if the absolute value of (h'-h1) is no more than 5mm, then the liquid level height h1 measured by the metering device is used as the liquid level height of the crude oil in the storage tank; if the absolute value of (h'-h1) is larger than 5mm, then the calibrated liquid level height h' is used as the liquid level height of the crude oil in the storage tank. The method can significantly reduce the metering error caused by the blockage of the storage tank metering tube, and can accurately measure the level of crude oil in the outer floating roof storage tank.

Description

technical field [0001] The invention relates to the field of liquid level measurement of crude oil storage tanks, in particular to a method for measuring the liquid level height of crude oil in a crude oil storage tank with an outer floating roof. Background technique [0002] At present, the external floating roof crude oil storage tank can only measure the liquid level of crude oil in the storage tank through the storage tank metering tube. However, affected by the settlement of crude oil heavy components, a large amount of oil sludge and other impurities are easy to accumulate at the bottom of the storage tank, which leads to the blockage of the flow hole at the lower end of the metering pipe of the storage tank, so that the liquid level in the metering pipe of the storage tank is the same as that of the crude oil storage tank with the outer floating roof. The actual liquid level of the crude oil in the oil tank is inconsistent, resulting in measurement errors. [0003] ...

Claims

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Application Information

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IPC IPC(8): G01F23/22
Inventor 丛润芝谢楠张建和邓文俊刘茹意沈恩洋
Owner ZHENHUA OIL YINGKOU STORAGE & TRANSPORTATION CO LTD
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