Manual wedge-shaped throttle valve

Abstract

The invention provides a manual wedge-shaped throttle valve, belongs to the field of oil well pressure control and aims to enhance the transverse force bearing capacity of a valve core and increase the safety coefficient of the throttle valve. The technical scheme includes that the manual wedge-shaped throttle valve comprises a valve seat, a valve core and a shell, the valve core is a cylinder with one side edge clinging to the inner wall of the valve seat, and flow guide buffer surfaces are arranged on the front section of the valve core. Since one side of the valve core clings to the inner wall of the valve seat, the valve core cannot vibrate after being impacted by fluid, the transverse force of the fluid on the valve core is reduced by the aid of the flow guide surfaces, possibility of breakage of the valve core is greatly decreased, oil well blowout is avoided, and safety of oil well operation is improved; by the aid of a concave cambered surface arranged between the inclined flow guide surface and the axial flow guide surface, anti-erosion capability of the valve core is enhanced, and service life of the valve core is prolonged.

Description

technical field [0001] The invention relates to a wedge-shaped manual throttle valve. Background technique [0002] The throttle valve used on the existing oil well pipeline includes a valve seat, a valve core and a housing, wherein the valve core is needle-shaped, and the front end of the valve core is a conical surface, which is in a suspended state with the valve seat. In the middle, the spool is prone to swing after being subjected to the lateral force of the fluid, causing the spool to slip, or even breaking the spool. In high-pressure gas wells, because there is no pressure display downstream of the throttle valve, the spool fracture cannot be found in time, so There will be a major blowout fire accident. Contents of the invention [0003] The invention proposes a wedge-shaped manual throttle valve, which can increase the bearing capacity of the lateral force of the valve core and improve the safety factor of the throttle valve. [0004] The technical solution of t...

AI Technical Summary

Problems solved by technology

[0002] The throttle valve used on the existing oil well pipeline includes a valve seat, a valve core and a housing, wherein the valve core is needle-shaped, and the front end of the valve core is a conical surface, which is in a suspended state with the valve seat. In the middle, the spool is prone to swing after being subjected to the lateral force of the fluid, causing the spool to slip, or even breaking the spool. In high-pressure gas wells, because there is no pressure display downstream of the throttle valve, the spool fracture cannot be found in time, so There will be a major blowout fire accident

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