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Precisively regulating ball gate

A ball valve and flow adjustment technology, applied in the field of ball valves, can solve problems such as discomfort and inability to provide precision required for low flow

Inactive Publication Date: 2004-02-04
SCHNEIDER ELECTRIC BUILDINGS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, currently available ball valves do not provide the required accuracy at low flow rates and are therefore not suitable for this application

Method used

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  • Precisively regulating ball gate
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The regulating plug type control valve or ball valve 10 of the present invention is figure 1 shown in . Ball valve 10 includes a valve body 12 forming an inlet 14 for receiving a fluid flow. Inlet 14 delivers fluid flow to an inlet passage 16 in fluid communication with valve port 18 . Valve port 18 extends along the longitudinal flow axis and provides fluid communication between inlet passage 16 and outlet passage 20 . Outlet channel 20 allows fluid to exit through outlet 22 . although figure 1 Not shown in , but it is contemplated that the ball valve 10 is a three-way mixing valve.

[0034] Ball valve 10 includes a valve assembly 24 for controlling fluid flow from inlet passage 16 to outlet passage 20 through valve port 18 . Specifically, the valve assembly 24 includes a valve plug 26 connected to a valve stem 28 such that the valve plug 26 can be in a fully open position ( Figure 14b ) and fully closed position ( figure 1 ), which will be described in more de...

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PUM

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Abstract

A precision modulating globe valve for controlling the flow of a fluid from zero to a maximum flow rate. The valve plug of the globe valve includes at least one flow modulating channel recessed from the outer surface of the valve plug. The outer surface of the valve plug engages a sealing member positioned along the inner surface of the valve port. The sealing member provides a fluid-tight seal between the outer surface of the valve plug and the valve port. The flow modulating channel is recessed from the outer surface of the valve plug from a minimum flow end to a maximum flow end. The radially recessed area of the flow modulating channel increases from the minimum flow end to the maximum flow end, such that as the valve plug moves past the stationary sealing member, an increased flow rate is created through the valve port.

Description

technical field [0001] The present invention relates to ball valves for volume control of fluids flowing through pipelines. More specifically, the present invention relates to a ball valve having a special valve plug that provides substantially ripple-free regulation of fluid flow from the beginning of flow through to maximum travel. Background technique [0002] Ball valves generally include a valve plug that is movable toward and away from a valve seat formed in a valve port between a fluid inlet and a fluid outlet. Movement of the valve plug is usually controlled by an actuator, such as a manual handle, or some other type of remote actuation system. [0003] For ordinary ball valves, the fluid flow through the valve is adjusted by changing the gap between the outer diameter of the valve plug and the inner diameter of the valve port. The clearance area between the OD of the plug and the ID of the port alternates between minimum and maximum values. Although ball valves a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K25/00F16K1/54
CPCY10T137/86734F16K1/54F16K25/00
Inventor 欧文·C·埃里克森邦妮·J·迪金森丹尼尔·F·墨菲杰丽·L·斯奈德
Owner SCHNEIDER ELECTRIC BUILDINGS LLC