ZF Cone Valve (Energy-dissipation Valve)

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ZF Cone Valve (Energy-dissipation Valve)

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Introduction : Cone valve is a suitable for high head, large flow conditions, no vibration, no cavitation operation, continuous discharge flow control of new valve products. Due to the use of inverted cone plunger spool named, referred to as the cone valve. Because of its excellent energy dissipation effect, it is also called energy dissipation valve. Cone valve in addition to the end of the channel is provided with a conical valve core, all the moving parts are set in the valve flow channel outside, so that the valve body internal flow is usually smooth, large flow and pressure drop loss is small, the entire working range will not produce cavitation and vibration, and in the small flow still has good flow control effect. The conical valve developed by our company has a fixed inverted conical structure. It is supported by hydraulic design and four guide wing blades used to reduce vibration. The flow rate is controlled by the front and back movement of the external movable casing. The valve body is respectively provided with metal-to-metal valve seats and supplementary soft sealing valve seats, which constitute a composite valve seat to ensure sealing performance. When discharged into the atmosphere, the water flow spreads at a wide cone angle and breaks down into a thin spray pattern, expending energy in the air. Usually according to the actual needs, can be required to control the water flow area, then install a different form of deflector at the outlet, which can not only mix the air with sufficient water, but also concentrate the flow. The results of the cone valve test showed no significant vibration, and the discharge coefficient was around 0.9 with or without the shroud when the fixed cone was fully open. ZF cone valve is mainly used in hydropower stations, reservoirs and urban water supply and drainage areas.

Product Details

锥形阀是一种适合高水头、大流量工况，要求无振动、无气蚀运行，连续排放流量控制的新型阀门产品。由于采用倒置锥形柱塞阀芯而得名，简称锥形阀。又因其具有优异的消能效果,故又称消能阀。锥形阀除了在流道终端设置有锥形阀芯之外，所有运动部件全部设置在阀门的过流通道外部，使得阀体内部流道通常顺滑，流量大而压降损耗少，其在整个工作范围内不会产生气蚀及振动，而且在小流量时仍具有良好的流量控制效果。本公司研制的锥形阀，结构为一个固定的倒置锥形，依靠水力设计形体及用来降低振动的4个导流翼叶片支撑，流量则由外部活动套管的前后移动来控制，阀体上分别设有金属对金属的阀座和补充性的软密封阀座，两者构成了复合式的阀座确保密封性能。在排放到大气中时，水流以宽广的锥形角度扩散，并分解为稀薄喷淋形态，将能量消耗在空气之中。通常根据实际需求，可以要求控制水流区域，则在出口安装一个不同形式的导流罩，这不仅能将空气与充分水混合，而且还集中流量。锥形阀测试的结果显示没有明显的振动，当固定锥形完全开启时，不论有导流罩或没有其排放系数都是0.9左右。 ZF锥形阀主要用于水电站、水库及城镇供排水领域。

1.产品概述

　　锥形阀是一种适合高水头、大流量工况，要求无振动、无气蚀运行，连续排放流量控制的新型阀门产品。由于采用倒置锥形柱塞阀芯而得名，简称锥形阀。又因其具有优异的消能效果,故又称消能阀。

　　锥形阀除了在流道终端设置有锥形阀芯之外，所有运动部件全部设置在阀门的过流通道外部，使得阀体内部流道通常顺滑，流量大而压降损耗少，其在整个工作范围内不会产生气蚀及振动，而且在小流量时仍具有良好的流量控制效果。

　　本公司研制的锥形阀，结构为一个固定的倒置锥形，依靠水力设计形体及用来降低振动的4个导流翼叶片支撑，流量则由外部活动套管的前后移动来控制，阀体上分别设有金属对金属的阀座和补充性的软密封阀座，两者构成了复合式的阀座确保密封性能。在排放到大气中时，水流以宽广的锥形角度扩散，并分解为稀薄喷淋形态，将能量消耗在空气之中。通常根据实际需求，可以要求控制水流区域，则在出口安装一个不同形式的导流罩，这不仅能将空气与充分水混合，而且还集中流量。锥形阀测试的结果显示没有明显的振动，当固定锥形完全开启时，不论有导流罩或没有其排放系数都是0.9左右。

　　ZF锥形阀主要用于水电站、水库及城镇供排水领域。

2.结构型式

　　1、锥形阀通过执行机构驱动外套筒来实现锥形阀的开启或关闭。外套筒式锥形阀又分倾斜式和水平式两种。

　　2、锥形阀有阀体、套筒、执行机构、连接管等部件组成。

　　3、执行机构有螺杆式、液压式、电动推杆式等种类。

　　4、锥形阀型号表示方法: