热静力浮球式疏水阀-FQ2-北京疏水阀门厂手机版

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产品介绍：

杠杆浮球式是利用浮力原理和杠杆原理，通过液位的变化使浮球上升或下降，浮球驱动着杠杆使得阀瓣离开或接触阀座达到开启排水和关闭阻汽的作用。采用自动排空气阀，能自动排除不凝结气体，非常灵敏，工作质量高，使用寿命长。连续排水，有水即排，最小过冷度为 0℃。杠杆浮球式疏水阀采用两种结构方式A：单阀座-杠杆浮球 B：双平衡阀座-杠杆浮球
单阀座：需要克服介质压力对阀座的作用，阀座的孔径不能很大，适用于小型设备、伴热管线，蒸汽主管等排水小的场合。阀座孔设计在凝结水水位以下，自然形成水封，水、汽自然分离，达到无蒸汽泄漏，即便没有凝结水采用球型密封的杠杆使得阀瓣紧贴阀座，达到无新鲜蒸汽的泄露。不受凝结水量波动和温度的影响。
双平衡阀座：该阀利用双阀孔设计，介质的压力对两个阀座作用相等，方向相反，介质压力对阀座作用相抵消，阀蕊在开阀时压力相对减少，从而获得超大排量。工作时浮球随阀腔内液体位的变化而上下浮动，带动杠杆打开或关闭阀座。由于阀座孔在凝结水水位以下，形成水封，水、汽自然分离，达到无蒸汽泄漏。不受压力、温度、冷凝水流量波动的影响。

Lever-ball float trap

Lever ball float type trap employs the buoyancy principle and the lever principles:to make the ball float ascend or descend by the change in the liquid level and then the ball float drives the lever to make the valve disc from or touch the valve seat to realize drainage and closed block vapor. The product adopts the automatic air exhaust to automatically eliminate non-condensing air.It is very precise with high operating and long service life.It can discharge whenever there is any water,ａnd its minimum subcooled temperature is 0℃.The lever-ball float trap adopts two kinds of structure modes:A:Single valve seat-lever ball float;B:double balanced valve seat-lever ball float.

Single valve seat:it needs to overcome the operation on the valve seat by the medium pressure;the hole caliber of the valve seat cannot be too large and is applicable to such low displacement condition as mini-equipment,steam tracing pipeline and steam main pipe.The hole of the valve seat is designed beneath the water level of the condensate water to form water sealing to keep water apart from vapor,so as to prevent the leakage of the vapor.Though there is no condensate water that uses ball-type sealed lever to make the valve clack tightly adhesion to the valve seat,it can prevent the fresh vapor from leakage.Further,the product is free of the affect of the fluctuation of the condensate water's quantity and temperature.

The double balanced valve seat:this valve is designed to have two valve openings.The pressure of the medium act against the two valve seats equally in reverse direction,so the pressure on the valve seat is offset,the valve core assumes relatively low pressure when the valve is open,in this way the overlarge displacement is obtained.During the operating process,the ball float floats with the change in liquid level of the valve cavity to make the lever open or close the valve seat.The hole of the valve seat is designed beneath the water level of the condensate water to form water sealing to keep water apart from vapor,so as to prevent the leakage of the vapor.Further,the product is free of the affect caused by the fluctuation of pressure,temperature and condensate's flow.

优点：

1、采用新型阀机构（新 SCCV 关闭方式和Z型结构），具有优良的密封性和耐久性。
2、双平衡阀座设计，比一般的疏水阀体积小而排量大，在特大排量场合更能发挥*性。
3、单阀座设计可以水平或垂直安装，可以满足高背压，低排量蒸汽管线。
4、内装空气自动排放阀，可防止空气气堵和蒸汽汽锁。
5、全部部件安装在阀盖上，阀无需从配管上卸下，就可维修保养，简单方便。

Merits

1.To use new-style valve mechanism (new SCCV closing mode and Z-shaped structure) to boast excellent tightness and endurance.
2.To employ double balanced valve seat design,it has smaller volume and larger displacement and can exert its advantages when needing large displacement.
3.The single valve seat model can be installed horizontally and vertically,satisfying the requirements of steam pipeline with high backpressure and low displacement.
4.The built-in automatic air exhaust can prevent air blocking and steam locking;

5.As all components are installed on the valve cover,so they can be maintained and cleaned up simply and easily without being removed from pipe arrangement.

热静力浮球式疏水阀/THERMAL-STATIC-BALL FLOAT TRAP

技术参数/Technique parameter

壳体压力等级

Shell

pressure grade

负荷泄漏率

Load leakage

使用介质

Used

medium

允许背压率

Permitted

Backpressure

rate

节能效果

Energy

Saving

effect

工作压差

Maximum

operating

pressure

differential

1.6、

2.5、

4.0、

10MPA

≈0%

蒸汽、凝结水

Steam、

Condensate

water

≥90%

优秀/

良好

Excellence/

good

10MPA

最小过冷度

Minimum

Subcooled

temperature

排水方式

Drainage

method

允许温度

Maximum

allowable

temperature

排空气装置

Air

exhaust

system

压力变化范围

Pressure

change range

0℃

连续方式 Continue

mode

420℃

自动

Automatic

适应

Adaption

主要零件材料/The materials of primary accessories

零部件名称

Part and component name

材质Material

阀体、阀盖

Valve body、Valve cover

铸钢、不锈钢

Cast steel、Stainless steel

浮球、杠杆

Float ball、Lever

304不锈钢

304 Stainless steel

双平衡阀座

Dual Balance valve seat

STL合金和不锈钢组合

Combination of STL alloy and Stainless steel

自动排空气装置

Automatic air exhaust

不锈钢、热敏元件

Stainless steel、Thermo-sensitive element

过滤网

Filtrating screen

不锈钢

Stainless steel

外形尺寸和重量/Prime out-form dimensions and weigh

产品型号 Product model	口径(DN) Calibre	L法兰 Flange	L螺纹/ 焊接 Thread/ welding	H1	H2	W	重量(kg) weight	使用压力范围(MPa) Pressure Change range	公称压力 (MPa) Nominal pressure
FQ21	15-25	-	170	74	74	148	7	0.1-2.5	2.5
FQ24	15-50	230	-	74	74	148	9-13	0.1-2.5	2.5
FQ21-40	15-25	-	200	85	85	170	8	0.1-3.2	4.0
FQ24-40	15-25	300	-	85	85	170	12	0.1-3.2	4.0

注解：

1、选型时请提供工作压力、工作压差、凝结水发生量、工作温度、连接方式及标准。

2、双平衡阀座凝结水负荷的安全系数一般为1.5~2倍，单阀座凝结水负荷的安全系数为3。

3、正确安装、定期保养清除阀内污物，保证疏水阀正常工作和延长使用寿命。

Note

1.Please provide operating pressure and operating pressure difference,generating quantity of condensate water,operating temperature,connecting mode and standards in selecting product models.

2.The safely coefficient for condensate water load of dual balance valve seat is generally 1.5 to 2 times,ａnd the safely coefficient for condensate water load of single valve seat is 3 times.

3.Please make sure the drain valve is installed properly,maintained regularly,cleaned up and operates under the normal condition,so as to extend its service life.

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