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Speed-adjustable pig provided with rotary by-pass valve

A bypass valve, rotary technology, applied in the direction of cleaning hollow objects, cleaning methods and utensils, chemical instruments and methods, etc., to achieve the effect of reducing the risk of impact collision, large flow area, and reducing throttling pressure difference

Inactive Publication Date: 2016-06-15
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Purpose of the present invention: In order to overcome the shortcomings of the existing pipe pig electronically controlled bypass valve discharge control method, and overcome the shortcomings of the mass block rotation to adjust the bypass valve method, a rotary bypass valve speed regulating pigging is specially provided device

Method used

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  • Speed-adjustable pig provided with rotary by-pass valve
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Embodiment Construction

[0030] The present invention is not limited by the following implementation examples, and specific implementation manners can be determined according to the technical solutions of the present invention and actual conditions. Combine below figure 1 , 2 , 3, 4, 5, 6, 7 The present invention is described below. The positional relationship of up, down, left and right is based on the attached figure 1 determined by the layout direction.

[0031] Such as figure 1 As shown, the fuel tank 4 and the accumulator 5 are arranged in the barrel, flanges are arranged at both ends of the barrel 3, a leather cup 1 is installed on the flange at one end of the barrel 3, a rear cover 2 is installed outside the leather cup 1, and the rear cover is connected with bolts Plate 2 and cylinder body 3 flanges are used to fix the leather cup 1. Cylindrical body 3 other ends are installed end cover 17, and leather cup 1 is installed outside end cover 17, and front cover plate 18 is installed outside ...

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Abstract

The invention relates to a speed-adjustable pig provided with a rotary by-pass valve. The pig can overcome the defect about the control manner of electrically-controlled by-pass valves. According to the technical scheme, speed collecting wheels are pressed against the inner wall of a pipeline under the spring force and the hydraulic force and drive hydraulic pumps, the hydraulic pumps output high-pressure oil which flows back to an oil tank by the aid of a throttling valve, pressure at the front end of the throttling valve is introduced into an annular oil cylinder, and the annular oil cylinder drives a valve core to rotate and change the flow area. A speed controller of the pig comprises no electrical apparatus elements, the pig is safe and reliable and can be used for long-distance pipeline cleaning, and energy is not required to be stored in a storage battery; pipeline detection equipment can be carried, and pipeline detection and cleaning work can be completed.

Description

technical field [0001] The invention relates to a speed-regulating pipe pig with a rotary bypass valve. Background technique [0002] In the process of pigging and testing oil and gas pipelines, general regulations require that the running speed of the pigging equipment is 3.5-5m / s; in order to obtain better quality of testing data, the running speed of the testing equipment in the pipeline is required to be lower than 5m / s ; Electromagnetic ultrasonic testing equipment requires its operating speed to be lower than 2m / s. The speed of the pigs changes greatly when passing through the uphill and downhill sections, curved sections, liquid accumulation, sand accumulation and fouling sections of the pipeline, and the direct use of conventional pigs cannot meet the speed control requirements. [0003] The speed control modes of existing oil and gas pipeline pigs are active control mode and passive control mode. [0004] The active control adopts the bypass valve control method, ...

Claims

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Application Information

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IPC IPC(8): B08B9/049
CPCB08B9/049
Inventor 梁政刘稳邓兰邓严何虹钢叶哲伟
Owner SOUTHWEST PETROLEUM UNIV
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