Bell type adjusting steam valve

Abstract

The invention relates to a bell type adjusting steam valve which mainly comprises a valve casing and a valve seat, wherein the upper end of the valve casing is closed by a valve cover, a valve rod is The invention relates to a bell type adjusting steam valve which mainly comprises a valve casing and a valve seat, wherein the upper end of the valve casing is closed by a valve cover, a valve rod iscree rib plates supporting the guide cone at the upper part. The cavity of the valve disc is filled with the guide cone so as to prevent the impact of collision of the flow to the valve disc. Theth three rib plates supporting the guide cone at the upper part. The cavity of the valve disc is filled with the guide cone so as to prevent the impact of collision of the flow to the valve disc. Thevalve rod does not shake or reduces the shake, thereby improving the shake of the steam valve. The valve rod is thickened when in production and manufacture, and a corresponding oscillating bearing isvalve rod does not shake or reduces the shake, thereby improving the shake of the steam valve. The valve rod is thickened when in production and manufacture, and a corresponding oscillating bearing is enlarged, therefore, the strength is improved.enlarged, therefore, the strength is improved.onnected with a valve disc after passing through the inner part of the valve casing, the valve disc adopts a bell type and is matched with the valve seat, the valve seat is provided with a guide coneconnected with a valve disc after passing through the inner part of the valve casing, the valve disc adopts a bell type and is matched with the valve seat, the valve seat is provided with a guide cone, and the guide cone is matched and connected with the valve disc and filled in a cavity at the inner part of the valve disc. The bell type adjusting steam valve controls the stroke of the valve disc, and the guide cone is matched and connected with the valve disc and filled in a cavity at the inner part of the valve disc. The bell type adjusting steam valve controls the stroke of the valve discthrough the matching of the bell type valve disc and the guide cone arranged in the cavity at the inner part of the valve disc, effectively reduces the shaking of the valve disc, and also reduces thethrough the matching of the bell type valve disc and the guide cone arranged in the cavity at the inner part of the valve disc, effectively reduces the shaking of the valve disc, and also reduces theimpact of collision of the valve disc. The bell type adjusting steam valve changes the open to control the flow through the up-and-down movement of the valve disc because the valve seat is provided wiimpact of collision of the valve disc. The bell type adjusting steam valve changes the open to control the flow through the up-and-down movement of the valve disc because the valve seat is provided with th

Description

technical field [0001] The invention relates to a regulating steam valve, in particular to a bell type regulating steam valve for controlling steam flow. Background technique [0002] At present, the structure of the regulating steam valve is simple. When the valve is closed small and the steam flow rate becomes small, the valve disc will often vibrate, especially when it is used on the steam turbine to control the regulating steam valve on the second and third expansion sections, the vibration of the valve disc will often cause The impact of the valve disc on the valve shell and the valve seat will affect the service life of the regulating valve. At the same time, the vibration of the valve disc will also cause the vibration of the valve stem, which will affect the lever and the oil motor through the pull rod. If this happens for a long time, the oil motor will control the valve disc. Errors make it impossible to accurately control the flow of steam, which affects the work ...

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