Hard alloy valve ball, also known as hard alloy ball valve, is evolved from the traditional plug valve, its opening and closing parts for a ball, through the ball around the stem axis to achieve the purpose of opening and closing.
High precision tungsten and cobalt carbide valve ball is widely used in oil drilling, deep sea drilling pumping pump valve ball, ball seat, is also one of the most critical components in the pump. Due to the harsh working environment and conditions in the oil drilling industry, water, various gases, wax, sand and other highly corrosive substances are usually contained in manholes, heavy oil Wells and high-pressure anti-drain Wells. The oil needs to be extracted from hundreds or even thousands of meters of strata by the pump, which requires the valve ball and valve seat to have good sealing, wear resistance and corrosion resistance.
The main advantages of hard alloy ball valve are as follows:
1. The lowest flow resistance in theory;
2. Excellent chemical stability, wear resistance and corrosion resistance, and most liquid and some corrosive media contact;
3. In high temperature and high pressure environment, it can still achieve complete sealing;
4. Due to the hard alloy ball valve with ball as opening and closing parts, less influence by friction, can achieve rapid opening and closing, and the impact of the operation is small, in addition, the spherical closing parts can withstand the closure of the existence of a higher pressure difference, and can also realize automatic positioning;
5. It has bidirectional sealing, making the work more stable and reliable.
Occasion of use
Several common hard alloy ball valve application occasions:
1. In double position adjustment, high sealing performance requirements, fast opening and closing (1/4 turn opening and closing), large pressure difference, small operating torque, small flow resistance, cavitation or vaporization of the pipeline system should be used in hard alloy ball valves;
2. Pipelines with corrosive media;
3. In low temperature cryogenic device or high temperature and high pressure pipeline system;
4. Full-diameter welded hard alloy ball valve can be used in oil pipelines and gas pipelines buried in the ground;
5. The special design of the V-shaped opening structure carbide ball valve can also have a certain adjustment function.
