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An adjustable-speed subsea oil pipeline cleaning pig

A technology for oil pipelines and speed regulation, applied in the direction of cleaning hollow objects, cleaning methods and utensils, pipe components, etc., can solve problems such as mechanical structure delay, solve the response lag, improve cleaning efficiency and safety, and improve speed. The effect of controllability and cleaning efficiency

Active Publication Date: 2020-02-18
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention provides a speed-adjustable submarine oil pipeline cleaning pig. This device changes the discharge area through the mechanical structure to realize the control of the speed of the pipeline pig, avoiding the problem of battery life. The speed regulating mechanism directly controls the size of the discharge area through the scraper, which solves the problem of delay in the mechanical structure

Method used

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  • An adjustable-speed subsea oil pipeline cleaning pig
  • An adjustable-speed subsea oil pipeline cleaning pig
  • An adjustable-speed subsea oil pipeline cleaning pig

Examples

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Embodiment Construction

[0026] Such as figure 2 As shown, when the submarine oil pipeline cleaning pig is working normally, it includes 18 parts: 1. Slide rod, 2. Speed ​​regulating scraper, 3. Spring ring, 4. Head baffle, 5. Screw, 6. Nut, 7, spring, 8, speed regulating support mechanism, 9, nut, 10, spring washer, 11, bolt, 12, speed regulating baffle, 13, straight plate, 14, discharge mechanism, 15, nut, 16, spring washer, 17, leather cup, 18, bolt.

[0027] The speed-adjustable pipeline cleaning pig head baffle 4 and the speed-regulating support mechanism 8 are connected by screws 5, the speed-regulating scraper 2 and the speed-regulating baffle 12 are connected by threads, and the speed-regulating support mechanism 8 and the straight plate 13 and the discharge mechanism 14 pass through Bolt 11, nut 9, spring washer 10 are connected, discharge mechanism 14 and leather cup 17 are connected by bolt 18, nut 15, spring washer 16, slide bar 1 and discharge mechanism 14, straight plate 13, speed regu...

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Abstract

The invention belongs to the field of seabed petroleum pipeline cleaning, and relates to a seabed petroleum pipeline cleaning pig with an adjustable speed, the cleaning pig can maintain a relatively stable speed in pigging operation, and the cleaning pig is sensitive to the change in speed. The seabed petroleum pipeline cleaning pig comprises a driving mechanism, a speed regulating mechanism, a cleaning mechanism and the like. The seabed petroleum pipeline cleaning pig adopts a leather cup drive mode. The speed regulating mechanism is composed of a scraper blade, a spring and a baffle, and thespeed is controlled by changing a discharge area. All parts are connected through flanges. The pipeline cleaning pig controls the operation speed of a pipeline pig. Compared with an existing pipelinecleaning pig, the seabed petroleum pipeline cleaning pig with the adjustable speed has the biggest characteristic that the speed regulating mechanism is directly controlled by the scraper blade, thespeed is controlled through a mechanical structure, and response to the change of speed is quickly.

Description

technical field [0001] The invention belongs to the field of submarine oil pipeline cleaning, and in particular relates to a speed-adjustable submarine oil pipeline cleaning pig, which can effectively control the running speed of the pipeline pig. Background technique [0002] Pigging is an important task before the pipeline is put into production or during operation. The purpose is to improve the cleanliness of the pipeline and the transmission efficiency. It is of great significance to ensure the safety of the pipeline and reduce the energy consumption of the pipeline. The operating efficiency of the pig is closely related to its operating speed. To achieve a good pigging effect, the speed of the pig should be controlled within a certain range. Generally, the operating speed of the pig in the oil pipeline should be maintained At 1-5m / s. The principle of speed regulation is to control the running speed of the pig by adjusting the pressure difference between the front and r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L55/32F16L55/40B08B9/049F16L101/12
CPCB08B9/049F16L55/32F16L55/40F16L2101/12
Inventor 徐兴平吴旭张辛刘广斗王龙庭汪海
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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