Online freezing point measuring device for crude oil conveying pipeline and method

A technology for conveying pipelines and measuring devices, which is applied in the field of online freezing point measuring devices for crude oil conveying pipelines, can solve problems such as crude oil conveying pipelines that have not yet been seen, and achieve the effects of high practical value, high degree of automation, and accurate online measurement.

Active Publication Date: 2018-09-07
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

In addition, there have been no related reports on the on-line freezing point measurement device for crude oil pipelines so far.

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  • Online freezing point measuring device for crude oil conveying pipeline and method
  • Online freezing point measuring device for crude oil conveying pipeline and method
  • Online freezing point measuring device for crude oil conveying pipeline and method

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Embodiment Construction

[0025] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described below in conjunction with the accompanying drawings and laboratory experiments, but it should be understood that the scope of the present invention is not limited thereto.

[0026] attached figure 1 , the on-line crude oil freezing point measuring device of crude oil transportation pipeline provided by the present invention comprises: inlet valve (2), inlet safety valve (3), inlet pressure gauge (4), sample measuring unit, outlet pressure gauge (13), outlet safety valve The valve (14) and the outlet valve (15) are connected in sequence; the sample measurement unit consists of an inlet shielding ring (6), a temperature sensor (7), a shielding sleeve (8), a casing heat exchanger (9), an arc-shaped high-precision Capacitance measurement pole plate (10), outlet shielding ring (12); temperature sensor (7), arc-shaped high-precision...

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Abstract

The invention discloses an online freezing point measuring device for a crude oil conveying pipeline and a method thereof. The device comprises an inlet valve, an inlet safety valve, an inlet pressuregauge, a sample measuring unit, a data acquisition card, an outlet pressure gauge, an outlet safety valve and an outlet valve, which are connected in sequence; the sample measuring unit comprises aninlet shielding ring, a temperature sensor, a shielding cover, a double-pipe heat exchanger, an arc-shaped high-precision capacitance measuring polar plate and an outlet shielding ring; the temperature sensor, the arc-shaped high-precision capacitance measuring polar plate, the data acquisition card, and a computer are connected by a double-shielded cable; and a digital display automatic temperature control water bath is connected with the double-pipe heat exchanger. The invention further discloses a method for measuring crude oil freezing points online by adopting the device. The device is simple in structure and high in degree of automation in a testing process, reduces the influence of subjective factors on the measurement of the freezing points, and improves the precision of the freezing point measurement.

Description

technical field [0001] The invention belongs to the technical field of automatic measurement of oil and gas, and in particular relates to an on-line freezing point measurement device and method of a crude oil transportation pipeline. Background technique [0002] Crude oil pipeline transportation is one of the most economical and safe transportation methods in the petroleum industry. Due to the complex composition of crude oil, its rheological properties, especially the rheological properties of non-Newtonian fluids containing waxy crude oil, are also extremely complex, which has a close relationship with temperature. For crude oil, the freezing point is the highest temperature at which the measured oil sample just loses fluidity under specified thermal conditions and shear conditions, and is a conditional parameter. In the operation and construction of crude oil pipelines, the freezing point is a very important reference parameter for the safety of pipeline operations, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/06G01N27/22
CPCG01N25/06G01N27/22
Inventor 李传宪崔凯翔杨爽杨飞李晓腾孙广宇姚博刘岱卫
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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