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Natural gas pipeline hydrate simulation test method and device

A technology for natural gas pipelines and generating devices, applied in the field of pipeline systems, can solve problems such as inability to quickly determine pipe fittings and pipe sections, and achieve the effects of process optimization, various measurement methods, and simple operation.

Active Publication Date: 2016-09-07
PIPECHINA SOUTH CHINA CO
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  • Abstract
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Problems solved by technology

[0008] CN101718710A discloses a visual experimental device and method for studying the properties of hydrogen hydrate, but this device and method cannot quickly determine the pipe section that leads to the formation of natural gas pipeline hydrate

Method used

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  • Natural gas pipeline hydrate simulation test method and device

Examples

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Embodiment Construction

[0041] The present invention will be further described in detail below with reference to the accompanying drawings and examples, but the practical pipeline natural gas hydrate simulation generation device of the present invention is not limited to each component in the examples, and can be improved as required.

[0042] Embodiment. The composition of this example is as figure 1 As shown, it includes gas storage tank 1, flow control valve 2, flange 3, circulating cooling device 4, gas storage tank switch valve 5, high-pressure spray device 6, injector 7, simulated main pipeline 8, pressure drop test pipe section 9, Rough pipe wall test pipe section 10, low temperature test pipe section 11, elbow test pipe section 12, compressor 13, flow meter 14, flow meter test pipe section 15, temperature information collection equipment 16, video collection equipment 17, pressure information collection equipment 18 and computer Central control system19. The test gas in the gas storage cylin...

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Abstract

The invention relates to a test method and device for simulating formation of natural gas pipeline hydrate. The test method is as follows: cleaning the residual air in the pressure drop test pipe section (9), the rough pipe wall test pipe section (10), the low temperature test pipe section (11), the elbow test pipe section (12) and the flowmeter test pipe section (15); When the low temperature test pipe section (11) reaches the specified temperature, inject liquid water into the pressure drop test pipe section (9) in the form of mist droplets; observe the hydrate formation, temperature and pressure changes of each test pipe section, and record the occurrence of hydrate , growth and blockage time, flow and pressure data; according to the formation of natural gas hydrate, combined with temperature and pressure data, analyze the environmental factors and required conditions of natural gas hydrate formation, and determine the key pipeline sections that are likely to cause natural gas hydrate formation. The invention has simple operation, various measuring means, and the measured data is close to the actual pipeline transportation environment.

Description

technical field [0001] The invention relates to a natural gas hydrate simulated generation test method and device, and relates to the technical field of pipeline systems. Background technique [0002] Natural gas hydrate is a cage-like ice-like solid compound formed by the combination of methane-based light hydrocarbons and non-hydrocarbon components with water molecules under certain temperature and pressure conditions. Water molecules form part of polyhedral cages through hydrogen bonding, and gas molecules are surrounded in lattices under the action of van der Waals forces. The general conditions for hydrate formation are: [0003] (1) Liquid water exists in natural gas or contains supersaturated steam: [0004] (2) have a certain temperature and pressure; [0005] (3) There are crystallization centers. [0006] Once the hydrate is formed, it will reduce the flow area of ​​the pipeline, cause throttling, and accelerate the further formation of hydrate. Hydrates may n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
Inventor 代晓东黄维和刘诚李树东郭旭贾子麒李国平张超
Owner PIPECHINA SOUTH CHINA CO
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