Low-noise cage regulating valve
A regulating valve and low-noise technology, applied in valve details, valve devices, multi-way valves, etc., can solve problems such as inability to effectively avoid turbulence and limited noise reduction functions, so as to alleviate turbulent collisions, increase flow capacity, and reduce fluid flow. noise effect
Inactive Publication Date: 2014-01-01
HARBIN ENG UNIV
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Problems solved by technology
A porous valve cage 8 is provided in the cavity of the valve body, and the regulating valve realizes part of the noise reduction function through the holes of the valve cage 8, but its noise reduction function is limited, and it cannot effectively avoid turbulent flow.
Method used
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[0034] Referring to the accompanying drawings, it shows that the present invention prevents eddy current collision and increases the flow in the valve with a low-noise cage regulating valve, which can be used for fluid regulation in various types of equipment or control pipelines. Although the examples disclosed herein are described in conjunction with control of steam turbine speed and steering regulation, the examples described herein can also be more widely used in the process of regulating fluid working fluid for different purposes.
[0035] figure 2 A schematic diagram of the main section of a low-noise cage-type regulating valve provided by the present invention, the low-noise cage-type regulating valve includes a three-way valve body 33, a combined valve cage 11, a flow guide element 14, a large flow throttling element 12, The eddy current separation protection element 13 , the pressing piece 15 , the damping limit assembly 44 and the valve plug 22 .
[0036] The thre...
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The invention relates to a low-noise cage regulating valve comprising a three-way valve body, a bonnet, a valve stem, a combined valve cage, a guide element, a high-flow throttle element, a vortex separation protective unit, a compressing member and a plug. The valve body is provided with a valve cavity, an inflow passage and an outflow passage. The inflow passage and the outflow passage pass through the valve cavity. The guide element and the combined valve cage are coaxially sleeved and are in tight fit with the opening end of the outflow passage. The lower end of the high-flow throttle element is provided with a socket, so that the high-flow throttle element is positioned at the upper end of the guide element and the upper end of the combined valve cage. The vortex separation protective element is fixedly connected with the compressing member by welding. The compressing member is connected with a plurality of shock-absorbing limit devices. One end of the valve stem passes the bonne to be in linkage with the plug. The plug slidably covers the outer edges of the guide element, the high-flow throttle element and the compressing member. The low-noise cage regulating valve has the advantages that fluid noise is reduced effectively, turbulence collision is relieved, and flow capacity under large openness is improved.
Description
technical field [0001] The invention relates to a control valve for controlling fluid flow, in particular to a low-noise cage regulating valve for reducing flow loss and fluid noise. Background technique [0002] In nuclear power generation, large-scale chemical production equipment and other industrial fields, control valves are widely used in process control systems to adjust process parameters such as medium flow and pressure in industrial automation processes. According to the control signal in the automation system, the opening of the valve is automatically adjusted, so as to realize the flow of working fluid between the inlet and outlet of the valve. In order to meet the specific fluid flow characteristics required by various working conditions, low-noise valves often use a valve cage in the flow channel between the valve outlet and inlet for throttling. The cage both attenuates flow noise and reduces or eliminates cavitation. [0003] The vibration and noise problem...
Claims
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IPC IPC(8): F16K47/02F16K11/04F16K27/00
CPCF16K11/07F16K27/041F16K47/026F16K47/08
Inventor 刘崇曲东越钟宇光邱长华栾海峰刘江王佳典
Owner HARBIN ENG UNIV