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E-mail
3216820288@qq.com
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Phone
13770421007
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Address
Jinhu County Industrial Park, Jiangsu Province
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Jiangsu Changshun Instrument Co., Ltd
Orifice plate
NegotiableUpdate on 05/16
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Overview
Overview CS-LG series throttling orifice plate, also known as differential pressure flowmeter, is composed of a primary detection element (throttling element) and a secondary device (differential pressure transmitter and flow display instrument), widely used in gas applications Flow measurement of steam and liquid It has the characteristics of simple structure, easy maintenance, stable performance, and reliable use.
Product Details
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Orifice plate
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Orifice plate
The CS-LG series throttling orifice plate, also known as differential pressure flowmeter, is composed of a primary detection element (throttling element) and a secondary device (differential pressure transmitter and flow display instrument), widely used in gas applications Flow measurement of steam and liquid It has the characteristics of simple structure, easy maintenance, stable performance, and reliable use.
2、 Appearance
3、 Working principle
The fluid filled in the pipeline flows through the throttling device inside the pipeline, causing local contraction near the throttling element, increasing the flow velocity, and creating a static pressure difference on both sides upstream and downstream.
Under the condition of known parameters, the relationship between differential pressure and flow rate can be derived based on the principle of flow continuity and Bernoulli equation to obtain the flow rate. The basic formula is as follows:
C - Non dimensional outflow coefficient
D - Diameter of the orifice or throat of the throttling element under working conditions
D - Inner diameter of upstream pipeline under working conditions
QM - Mass flow rate Kg/s
Qv - Volume flow rate m ³/s
ß - diameter ratio d/D dimensionless
Density of fluid Kg/m ³
The coefficient of expandability is dimensionless
4、 Structure
Composition of throttle orifice plate
1. Throttling components: standard orifice plate, standard nozzle, long diameter nozzle, 1/4 circular orifice plate, double orifice plate, eccentric orifice plate, circular orifice plate, conical inlet orifice plate, etc
2. Pressure collection device: ring chamber, pressure collection flange, clamping ring, pressure pipe, etc
3. Connecting flanges (flanges according to national standards, various standards, and other design departments) and fasteners.
4. Measuring tube
Scope of application and relevant technical indicators of throttling device
5、 Selection of throttling orifice plate products:
| model | |||||||||
| CS-LGB | Throttle orifice plate (orifice flow meter) | ||||||||
| code | Two basic classifications based on their structural features | ||||||||
| K | perforated plate | ||||||||
| P | Nozzles, etc | ||||||||
| code | Nominal pressure (105Pa) | ||||||||
| 2.5 | 2.5 | ||||||||
| 10 | 10 | ||||||||
| 16 | 16 | ||||||||
| 25 | 25 | ||||||||
| 64 | 64 | ||||||||
| 100 | 100 | ||||||||
| 200 | 200 | ||||||||
| code | Caliber (mm) | ||||||||
| 10~1600 | 10～1600mm | ||||||||
| code | Subdivide according to its structural form | ||||||||
| H | Standard orifice plate (ring chamber) | ||||||||
| Y | Standard orifice plate (flange) | ||||||||
| K | Standard orifice plate (drilling) | ||||||||
| I | ISA 1932 nozzle | ||||||||
| L | Long diameter nozzle | ||||||||
| W | Wenqiu Li nozzle | ||||||||
| G | Classic Wenqiu Li Guan | ||||||||
| S | Double orifice plate | ||||||||
| Q | Circular perforated plate | ||||||||
| Z | conical entrance orifice plate | ||||||||
| R | 1/4 round hole plate | ||||||||
| P | Eccentric orifice plate | ||||||||
| N | Integrated (concealed) orifice plate | ||||||||
| X | Wedge-shaped orifice plate | ||||||||
| T | Special throttling devices not listed above | ||||||||
| code | medium | ||||||||
| 1 | liquid | ||||||||
| 2 | gas | ||||||||
| 3 | steam | ||||||||
| 4 | High temperature liquid | ||||||||
| code | Compensation form | ||||||||
| N | Without pressure or temperature compensation | ||||||||
| P | With pressure compensation output | ||||||||
| T | Equipped with temperature compensation output | ||||||||
| Q | Equipped with pressure and temperature compensation output | ||||||||
| code | Differential pressure range of transmitter | ||||||||
| 0 | Micro differential pressure range | ||||||||
| 1 | Low differential pressure range | ||||||||
| 2 | Medium differential pressure range | ||||||||
| 3 | High differential pressure range | ||||||||
| code | Is there an on-site display | ||||||||
| W | Throttle device sensor | ||||||||
| X | Intelligent throttling device (flowmeter) | ||||||||
