20000psi cage throttle valve

Abstract

The invention provides a 20000 psi cage type throttle valve which comprises a valve body, a valve seat, a valve rod, a valve core, a valve cap, a bearing, a valve rod nut and a hand wheel, wherein the valve seat is installed on a fluid flow passage of the valve body, the lower end of the valve core stretches into the valve seat and is fixed with the valve seat, and the upper end stretches into the bottom of the valve rod; the bearing is arranged at the upper end of the valve cap, one end of the valve rod nut stretches out of the bearing and is connected with the hand wheel, and the other end is connected onto the bearing; the upper end of the valve rod penetrates through the valve body and the valve cap in order and stretches into the valve rod nut; the bottom of the valve rod is provided with a carboloy inner bushing which is sleeved with the valve core; an upper gasket, an upper sealing ring, an upper check ring, a lower gasket, a lower sealing ring and a lower check ring are arranged inside the valve cap in order from top to bottom; and a metal sealing ring and a T-shaped sealing ring are also arranged between the valve seat and the valve body in order from top to bottom. The 20000 psi cage type throttle valve can work at the high-pressure working condition of 20000 psi. Compared with the prior art, the 20000 psi cage type throttle valve has long service life, accurate flow control, low working noise and small vibration, and the head of the valve rod is not easy to damage.

Description

technical field [0001] The invention relates to a throttling valve, in particular to a cage type throttling valve which can work under a high-pressure working condition of 20000 psi. Background technique [0002] As a kind of choke valve, the cage choke valve is an indispensable valve in the Christmas tree during oil exploitation, and is generally used in petroleum engineering with complicated working conditions. However, the cage-type throttle valve currently on the market has a relatively low working pressure and a relatively simple structure, which cannot meet the requirements of complex working conditions at all. [0003] The throttle valve of the prior art mainly has the following defects: [0004] (1) Due to the working conditions, the erosion of the valve stem is relatively serious, and the service life of the throttle valve is short; [0005] (2) There will be a lot of noise when the valve is working; [0006] (3) The valve vibrates greatly when it is working, and...

AI Technical Summary

Problems solved by technology

[0004] (1) Due to the working conditions, the erosion of the valve stem is relatively serious, and the service life of the throttle valve is short;

[0005] (2) There will be a lot of noise when the valve is working;

[0006] (3) The valve vibrates greatly when it is working, and long-term vibration will cause the fastening parts to fail and cause danger;

[0007] (4) Since the head of the valve stem is made of hard alloy, when the valve is closed, the head of the valve stem is in direct contact with the valve core, and it is easy to cause damage to the head of the valve stem in the case of violent impact

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