Tubular column anti-jacking controllable device

The utility model provides a pipe column anti-jacking controllable device. A large four-way joint, a blowout preventer and a positioning assembly of the pipe column anti-jacking controllable device are arranged on a pipe column in a sleeving mode. The two lifting hydraulic cylinders are respectively...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ZHANG HAI, WANG JUN, WANG LONGWEI, TANG WEI, YANG TAO, WU JINONG
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The utility model provides a pipe column anti-jacking controllable device. A large four-way joint, a blowout preventer and a positioning assembly of the pipe column anti-jacking controllable device are arranged on a pipe column in a sleeving mode. The two lifting hydraulic cylinders are respectively mounted on the positioning assembly, are in transmission connection with the tubular column and are used for driving the tubular column to move up and down relative to the positioning assembly; the first reverse hydraulic chuck is installed on the positioning assembly, arranged on the pipe column in a sleeving mode and used for locking or loosening the pipe column. The second reverse hydraulic chuck is installed on the positioning assembly, arranged on the pipe column in a sleeving mode and used for locking or loosening the pipe column. The first end of the hydraulic guide valve is connected to one end of the first hydraulic pipe, the second end of the hydraulic guide valve is connected to one end of the second hy