High-temperature and high-pressure top-assembled ball valve
A high-temperature, high-pressure, top-loading technology, which is applied to valve devices, cocks including cut-off devices, engine components, etc., can solve problems such as not solving existing problems, and achieve the effect of preventing valve seat rotation.
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[0022] Such as Figure 1-2 As shown, a high-temperature and high-pressure top-entry ball valve includes a valve body 1, a valve cover 2 arranged on the valve body 1, a valve stem 3 and an actuator 4. The valve cover 2 and the valve body 1 are fixedly connected by bolts, and the valve cover 2 A sealing ring 21 is provided between the valve body 1 and the valve body 1 . The actuator 4 includes a worm case 41 and a rotating wheel 42 arranged on the worm case 41 . A bracket 5 is provided between the worm case 41 and the valve cover 2 . Both ends of the bracket 5 are respectively connected to the worm case 41 and the valve cover 2 . The inner chamber of the valve body 1 is provided with a ball 6 and a valve seat assembly 7 which are tightly fitted. The sealing structure 9 on the seat 8, the sealing structure 9 includes a spring pressing plate 91, a spring 92 and a valve seat packing self-sealing structure 93 connected in sequence, the spring pressing plate 91 is movable on the val...
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