Annotate vapour switch

• Main Authors: SU QIUHAN, MENG QINGPENG, JIN XIN, HAO LIWEI, LUO WENLI, GAO GUANGQI, TANG QIANWEN, SUN BAOJING, WANG FENG, YUE ZHENYU
• Format: Patent
• Language: English
• Published: 19.08.2015
• 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 provides an annotate vapour switch, including the valve bonnet, disk seat, valve ball, the valve bonnet divide into epicoele and cavity of resorption, said epicoele is used for holding the valve ball, has placed the spring in the cavity of resorption, said epicoele internal diameter is greater than the diameter of valve ball, and the internal diameter of cavity of resorption is less than the diameter of valve ball, the spring upper end is connected the guide bar and is stretched into the intracavity, the valve ball is located in the guide bar upper end, the valve bonnet up end is provided with prevent the disk seat that the valve ball deviates from, said guide bar upper end is the valve ball bracket, and the lower extreme then is the spring coupling head, the external diameter of valve ball bracket is greater than the internal diameter of the last port department of valve bonnet cavity of resorption. Sealing performance is good for this device, and flow path is big, and difficult the inefficacy is utilized this device can guarantee the viscous crude well and is normally annotated vapour, also can during the well head maintenance, need not the pressure that travels empty at surface equipment, also can be at supporting packer, and give up and wait the instrument to realize that not kill-job is examined and repaired to annotate the steam pipe post, can effectively shorten the overhaul period, practice thrift and annotate vapour heat energy, improvement economic benefits