限流孔板说明书汉英

目录

Catalogue

一、产品用途

Service

二、产品型式和组成

Component Part

三、产品成套及使用

Model and Main Performances

四、产品运输和贮存

Transportation and Storage

五、随箱技术资料

Attachment in Package Box

六、订货须知

Information for Placing Orders

一、产品用途

FUNCTION FOR RO

LGX型限流孔板也称减压孔板，主要用于流体要求降压的场合。如：在控制阀后设置限流孔板，以减小阀上的压降，降低阀的噪音，减少阀芯阀座的磨损等；流体需要降压及对降压准确度要求不高的场合；或设在控制阀旁路上，以防止手动操作旁路阀时造成泻压太快或发生液位抽空等危险，以及在配管放空系统中降低噪声等等。

LGX RO is also can be called as pressure-reduced ori f ice, which i s mainly used on the site of pressure-loosed requirement. For example, installing RO on the back of control valve so that reducing the pressure and lower the noi s e of valve, at the same time protecting the val v e seat and pith. If you need to loose the flow pressure or avoid quick pressure –lose and liquid –empty, the best choice is using RO, thus you can also reduce the noise of pipeline.

二、产品型式和组成

SCORE AND COMP OSE

限流孔板可分为单级降压和多级降压限流孔板组。其降压级数需根据流体介质、降压要求等参数经计算确定。

Now, we can provide various RO, for example, mono or multi-pressure lose type, the pressure lose class is decided by the fluid and pressure di f ference.

1.当流体为气态时

When gas fluid

为了避免使用限流孔板的管路出现噎塞流，限流孔板后压力(P2)不能小于板前压力(P1)的约55%，即P2≥0.55P1，因此当P2<0.55P1时，不能用单板，要选择多板，其板数要保证每板的板后压力大于板前压力的55%。

T o avoid gas choke,pressure downstream(P2) shall not less than 55 percent of the pressure upstream(P1),otherwi s e multiplicate restriction ori f ice plate should be taken.

2.当流体为液态时

When liquid fluid

当液体压降小于或等于2.5MP a时，选择单板孔板；当液体压降大于2.5MP a 时，选择多板孔板，且使每块孔板的压降小于2.5Mpa。

Use single restriction ori f ice plate when differential pressure is less than

2.5MP a ,otherw i s e multiplicate restriction orifi c e plate should be taken

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三、产品成套及使用

STRUCTURE AND USING METHOD

1.产品成套分为

STRUCTURE DET AIL

1)单级限流孔板装置

MONO-PRE SSURE LOSE RO

a)单板：只提供孔板(按用户提供法兰标准及密封面型式配置)。

The orifice plate (only offer the plate, whi c h is produced according to the

flange and seal type of customer)

b)单级成套：含孔板、紧固用法兰、密封垫片及螺栓组件。

The unit include: orifice plate, flange for tight, seal shim and bolts and nuts

2)多级降压限流孔板组装置

MULTI-PRE SSURE LOSE RO

a)法兰连接式限流孔板组件：此种供货不提供密封垫片及螺栓组等。

Flange type RO include: seal shim, bolts and nuts are not included in this

type of RO

b)带工艺法兰限流孔板组装置：成套含限流孔板组、工艺配对法兰、密封垫片

及螺栓组等。

RO w ith the technology flange: whi c h include ori f ce plate units, seal shim

and bolts and nuts.

产品成套图示：

Diagram of restri c ktion orifi c e plate equipment is as follow ing:

Fig.1 多级限流装配示意图(RF)

Diagram of multiplicate restriction orifi c e plate equipment (RF)

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