Mechanical password type antifreezing antitheft sampling device for Christmas tree main pipe

• Main Authors: WANG QUNYING, WANG YI, XU LIZHENG, XU GUANGSHENG
• Format: Patent
• Language: Chinese; English
• Published: 06.08.2014
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The utility model relates to a mechanical password type antifreezing antitheft sampling device for a Christmas tree. The mechanical password type antifreezing antitheft sampling device comprises a bypass valve and is characterized in that the bypass valve comprises a valve body, a valve core, a valve rod, a valve hand wheel and a valve hand wheel shaft. The valve core is welded inside the valve body, the valve rod is connected with the hand wheel shaft, and rotating opening and closing the hand wheel shaft are controlled through a coded lock. The mechanical password type antifreezing antitheft sampling device has the advantages that compared with the prior art, the sampling device prevents freeze, due to the fact that crude oil is conveyed at an oil production well opening in a hot water mixing mode, a sampling valve is arranged in an oil outlet pipeline, the conveyed crude oil is utilized to heat the valve, and the goal of freeze prevention of the valve is achieved; the sampling device prevents theft, the me