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Orifice choke valve

A technology of throttle valve and orifice plate, applied in the direction of sliding valve, valve device, engine components, etc., can solve the problems of reduced sealing, enlarged gap, inaccurate flow control, etc., and achieve the effect of ensuring the sealing effect

Inactive Publication Date: 2016-05-18
TAICANG GAOTAI MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the effect of pressure and inevitable wear, the gap between the upper valve plate and the lower valve plate will gradually become larger, the sealing will be reduced, and the flow control will become inaccurate

Method used

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  • Orifice choke valve

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Embodiment Construction

[0011] The conception, specific structure and technical effects of the invention will be clearly and completely described below in conjunction with the embodiments and drawings, so as to fully understand the purpose, features and effects of the invention. The various technical features in the invention can be combined interactively on the premise of not conflicting with each other.

[0012] refer to figure 1 , an orifice-type throttle valve, comprising a throttle valve body 1, an upper valve plate 2 and a lower valve plate 3 arranged inside the throttle valve body 1 and sealingly laminated together, and a lower end fixedly connected to the upper valve plate 2 The valve stem 4, the transmission shaft 5, and the first handwheel 6 fixedly connected to the upper end of the transmission shaft, the transmission shaft 5 is a hollow structure, and the valve stem 4 can be moved up and down and sealed inside the transmission shaft 5, the valve stem 4 A flat key 7 is arranged with the t...

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PUM

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Abstract

The invention relates to a chock valve and particularly relates to an orifice choke valve comprising a choke valve main body, an upper valve plate, a lower valve plate, a valve rod, a driving shaft and a handwheel, wherein the upper valve plate and the lower valve plate are arranged inside the choke valve main body and are superposed together in a sealed way; the lower end of the valve rod is fixedly connected with the upper valve plate; the handwheel is fixedly connected with the upper end of the driving shaft; the driving shaft is of a hollow structure; the valve rod is in seal fit with the inside of the driving shaft in a vertically-moving way; the valve rod and the driving shaft are provided with a flat key; the top of the driving shaft is in threaded connection with a pressing rod; and the lower end surface of the pressing rod is in contact with the upper end surface of the valve rod. According to the orifice choke valve, the driving shaft is set to be of the hollow structure, the pressing rod is additionally arranged, and a gap between the upper valve plate and the lower valve plate is controlled by using the pressing rod, so that the sealing performance between the upper valve plate and the lower valve plate is kept favorable.

Description

technical field [0001] The invention relates to a throttle valve, in particular to an orifice type throttle valve. Background technique [0002] In the oil drilling process, a choke and kill device is needed to control the downhole pressure. The choke and kill device consists of a choke manifold and a kill manifold, and the choke valve is a key component of the choke manifold. There is an orifice plate type throttle valve in the existing throttle valve, and its structure mainly includes a throttle valve body, an upper valve plate and a lower valve plate arranged inside the throttle valve body, and a seal between the upper valve plate and the lower valve plate Stacked together, by turning the upper valve plate, the semicircular holes on the upper valve plate and the lower valve plate are staggered by a certain angle to adjust the flow. Due to the effect of pressure and inevitable wear, the gap between the upper valve plate and the lower valve plate will gradually become larg...

Claims

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Application Information

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IPC IPC(8): F16K3/02F16K3/314
CPCF16K3/029F16K3/314
Inventor 缪昌谷
Owner TAICANG GAOTAI MACHINERY