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A variable-diameter spherical pipe cleaner

A pipe pig and variable diameter technology, which is applied in the direction of pipe components, pipes/pipe joints/pipe fittings, mechanical equipment, etc., can solve the problems of resistance in the recovery process and poor sealing of pipeline occluders, so as to reduce resistance, The effect of avoiding shielding and reducing the risk of jamming

Inactive Publication Date: 2018-02-23
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Purpose of the present invention: In order to overcome the shortcomings of the existing pipeline occluders that are not tightly blocked and the resistance in the recovery process is too large, a variable-diameter spherical pipe pig is specially provided

Method used

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  • A variable-diameter spherical pipe cleaner

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Embodiment Construction

[0015] 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 The present invention is described below. The positional relationship of up, down, left, right, etc. is based on the attached figure 1 determined by the layout direction.

[0016] The inner casing 13 is a rubber spherical shell, and the injection joint 7 and the liquid discharge joint 11 are installed outside the inner casing 13. The inner casing 13 is provided with an exhaust hole 6 above the installation position. When it is liquid, the air in the inner casing 13 is discharged through the vent hole 6, and the vent hole 6 is closed after the air is discharged. A one-way valve 8 is installed on the inner side of the injection joint 7, and a solenoid valve 12 is installed on the inner side of the liquid discharge joint 11, and the ...

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Abstract

The invention relates to a variable-diameter spherical pipe cleaner which is used for welding operation of an inservice pipeline. According to the technical scheme, an inner shell is a rubber spherical shell, an injection connector and a liquid discharge connector are arranged outside the inner shell, a gas discharge hole is formed above the mounting position of the inner shell; a check valve is arranged at the inner side of the injection connector, a solenoid valve is arranged at the inner side of the liquid discharge connector, and a vibration sensor is arranged at the inner side of the gas discharge hole; a microcontroller and a battery are arranged in the inner shell, and the microcontroller is connected with the solenoid valve and the sensor; and an eccentric block is arranged on a motor output shaft, and a motor is arranged outside a pipeline corresponding to the mounting position of the pipe cleaner. According to the pipe cleaner disclosed by the invention, reducing recovery is adopted, so that resistance in recovery can be reduced; and the discharge reducing of the spherical shell is controlled by only adopting a vibrating signal, thus being reliable in control.

Description

technical field [0001] The invention relates to a variable-diameter spherical pipe pig, which is used for blocking the cut-off part of the pipeline during the welding operation of the pipeline. Background technique [0002] In oil and gas storage and transportation and urban gas projects, long-distance large-diameter pipelines need to be laid for oil and natural gas transportation. For oil and gas pipelines in service, as the service life of the pipeline increases, the pipeline may be damaged and defective due to factors such as corrosion, fatigue and mechanical damage. , or due to urban construction and other reasons that require the rerouting of in-service pipelines, etc., it is necessary to re-weld new pipelines after part of the in-service oil and gas pipelines are cut off. Oil and gas are replaced or blocked. [0003] Existing hot-fire technologies mainly include hot-fire displacement technology and safety-blocking hot-fire technology. Among them, nitrogen replacement ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L55/134
CPCF16L55/134
Inventor 张梁邓兰邓严刘稳何虹钢
Owner SOUTHWEST PETROLEUM UNIV
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