Introduction to oil metering skid system and its calibration

Abstract: introduction to oil metering skid system and its calibration information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. introduction metering skid system as a kind of can guarantee high measurement precision of the measurement system has been widely applied in custody transfer metering of crude oil, product oil and gas.

The new project in the world today, the crude oil trade transition are using metering skid is 80%.

More coriolis flow meter manufacturers choose model price quote you are welcome to inquire, here is a discussion on oil metering skid system and its calibration article details. introduction gas metering skid system as a kind of can guarantee high measurement precision of the measurement system has been widely applied in custody transfer metering of crude oil, product oil and gas.

The new project in the world today, the crude oil trade transfer 80% are using metering skid system form.

Our country in the oil and gas industry in recent years, many large projects have adopted a system of measurement skid, for example: LanCheng chongqing product oil pipeline and products pipeline in the pearl river delta and China's investment abroad kazakhstan crude oil project, refined oil projects in Kenya. 

Metering skid system for its high precision, high stability, is widely used in oil and gas industry.

1 measurement skid system measurement of skid is usually what we call the measurement system, it is the measurement of the various parts together, pre-installed on a steel base, do test and function test before delivery, and obtain certificate of metrological verification, just after arrived at the scene and upstream and downstream piping connection and connect signals to the control room after the instrument ark can be put into operation.

Flow metering skid is an integrated & other;

Engineering & throughout;

, it is like a whole products & other

Packaging & throughout;

Supply, the user can be reduced a lot of trouble.

Product main gas metering skids process flow diagram as shown in figure 1, mainly includes the following parts: 1)

Measuring instrument: mass flowmeter, ultrasonic flowmeter, turbine flowmeter, scraper flowmeter, etc.

2)

Instrumentation: temperature, pressure transmitter, temperature and pressure.

3)

Analysis instrument: automatic sampler, water cut analyzer, densimeter.

4)

Online than loop and online calibration interface.

5)

Piping and valves: the downstream shutoff valve, flow regulating valve, drain valve, relief valve.

6)

Instrument circuit system, such as: power distribution box, signal connection box, flexible connecting pipe, explosion-proof threading pipe, wearing a box, etc.

7)

Control cabinet, the flow computer, PLC,

And circuit switch control valve, optional)  8)

All kinds of steel support structure, escalators, corridor, etc.

9)

Steel base. 

 1.

1 meter measuring instrument for measuring the core of the skid-mounted system part, according to the specification requirements, the oil field transmission oil custody transfer metering accuracy is 0.

At present, the main application of the instrument in the level 2 types include: scraper flowmeter and mass flow meter, ultrasonic flow meter, turbine flow meter, etc.

Meters two output pulse signals at the same time, all the way to their own measure of the computer, all the way to a calibration with a flow computer.

Scraper flowmeter as traditional instrumentation, with high measurement precision, strong adaptability, is not affected by the medium density, etc, has been widely applied.

But when in scraper flowmeter metering of crude oil, under the condition of the running process, due to factors such as temperature, pressure, viscosity changes will affect the volume of crude oil, could lead to additional errors caused by flow meter itself, plus the scraper flowmeter metering chamber wear for a long time can produce error, etc. , so the scraper flowmeter also has certain defects.

Mass flowmeter, direct measurement of the quality of the fluid, liquid can be measured range (

Including high viscosity liquid, oil of solid particles evenly distributed, the liquid to a small amount of gas liquid, etc. )

, the amplitude of the measuring tube is small, can be regarded as no moving parts, downstream straight pipe requirements, the Buddha can simultaneously measure the density of liquid level and temperature, etc, has been widely used.

But mass flow meter has some limitations: the pressure loss is big, the current mass flowmeter large diameter was only 6, is sensitive to external vibration, expensive, and so on.

Ultrasonic flowmeter, multichannel ultrasonic flowmeter in the big flow measurement of large diameter pipes, has outstanding advantages, it is the structure of the moving parts and complete self-diagnosis function greatly improves the reliability of the flowmeter, without additional pressure loss has obvious advantage in energy saving, measurement range are far greater than other meter.

Because of the ultrasonic flow meter is to rely on intelligent electronic unit indirect measurement of ultrasonic transmission time to calculate the flow, artificial & other;

Manufacturing & throughout;

The pulse (related to traffic

Frequency)

, the flow pulse and serial signal is obtained by calculation, so the output signal will lag behind the fluid properties, and after transformation of data processing, the pulse signal is likely to lag behind the serial data signal;

Because fluid flow instability, flow small disturbance or pulse will be flow meter to measure, lead to flow produce the shortcomings such as uneven pulse.

 
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