Y-shaped flow channel throttling sleeve

Abstract

The invention relates to a Y-shaped flow channel throttling sleeve. Three layers of throttling sleeve bodies are used, a groove is machined in an inner hole of each layer of throttling sleeve body, a flow distribution hole is machined in the outer diameter of each layer of throttling sleeve body, and machining can be completed by utilizing common machining equipment. A medium plays a role in throttling through an annular groove, then the purpose of damping and controlling the flow speed of fluid movement is achieved through the flow dividing holes, the flow distribution holes in the outer diameters and the grooves of the inner holes are fully and effectively used for combination, and repeated three-layer throttling and pressure reduction are achieved. The Y-shaped flow channel throttling sleeve is suitable for valve components used in high-pressure-drop liquid, steam and gas emptying occasions such as thermal power, chemical engineering and the like, and has the advantages of cavitation resistance, flash evaporation resistance, low noise, low vibration and the like, machining is easy and convenient, the efficiency is high, and the machining cost is greatly reduced.

Description

【Technical field】 [0001] The invention belongs to the technical field of regulating valves, in particular to a Y-shaped flow path throttling sleeve. 【Background technique】 [0002] Y-type flow channel throttling sleeve is mainly used in small flow throttling valves and temperature reducing and pressure reducing regulating valves. Such valves are widely used in valve components used in high pressure drop liquid, steam and gas venting occasions such as power stations and chemical industries. It has the advantages of anti-cavitation, anti-flash, low noise and low vibration. Existing throttling parts of similar valves are two types: upper and lower disc type and inner and outer multi-layer sleeve type; among them: the upper and lower disc type throttling parts are processed with multiple curved grooves on the upper end surface of each layer of discs, The curved grooves increase the damping of fluid movement and play the role of multi-stage pressure reduction, so that the pressu...

AI Technical Summary

Problems solved by technology

Due to the high requirements of the laminations on the curvature and corners of the grooves, the structure is very complicated. After the processing, each throttle plate needs to be welded together in layers. At present, this kind of welding and groove processing equipment is expensive and difficult to achieve, and the processing cost High-end features cause the problem of difficult processing of the labyrinth disc sleeve, and the length of the throttle channel is limited, which cannot effectively play the role of anti-scouring, and the narrow throttle channel makes the flow channel easy to block

There are also inner and outer multi-layer sleeve-type throttling parts. This kind of throttling parts is superimposed by using multi-layer throttling sleeve sleeves. Each layer of throttling sleeves needs to process throttling holes. The difference is 30%, and it plays a throttling role. Each layer needs high-precision coordination, and each layer needs to be welded between layers. This kind of equipment is expensive and takes a long time to process. The yield is low, and the throttling channel is short, and the throttling effect is poor. , general anti-scouring effect

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