Pilot-operated type self-holding electromagnetic valve for gas well mouth
A pilot-operated, self-maintaining technology, applied in wellbore/well valve devices, wellbore/well parts, lift valves, etc., can solve the problem that the valve core cannot be fully opened, and achieve the improvement of information management level and wide application Foreground, ensure safe and stable effect
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[0023] Embodiment 1: Taking a gas well wellhead pilot type self-holding solenoid valve as an example, the present invention will be further described in detail.
[0024] refer to Figure 1a , Figure 1b. Gas well wellhead pilot type self-holding solenoid valve mainly consists of valve cover 1, valve body 2, main valve core 3, auxiliary valve core 4, pinned solenoid head 5, primary opening solenoid head 6, secondary opening solenoid head 7, core Rod 8, lower compression spring 9 and upper compression spring 10 form. The valve body 2 is forged from austenitic stainless steel 2Cr13. Both sides of the valve body 2 are respectively provided with an air inlet and an air outlet connecting the pipeline, and the inner diameters of the air inlet and the air outlet are both 45 mm. An air intake passage is arranged in the air inlet, and an air outlet passage is arranged in the air outlet. The plane main valve core seat is processed between the air outlet channel and the air intake cha...
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