AccessoriesofThrottlingDevice

1.Condenser

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2.Isolator

1.1 Purpose of condenser

FL-64 condenser is an accessory for measuring steam flow.It is filled with condensate and installed between the flowmeter and the throttling device to prevent steam entering the meter directly.

△ Standardinterface Non-standard interfacesshallbe indicated \Phi 1 4 x 3 , \scriptstyle \varphi 2 2 x 4 separately at the time of ordering

1.2 Technical data of condenser

1.Working pressure: 6.4 MPa ( 6 4 {kg } { f } / {cm } ^ { 2 } )
2.Specification:

2.1Purpose of isolator

FG isolator is an accessory for measuring the flow of corrosive liquid or gas.FG-64A isolator is used when specific gravity of the measured medium is less than that of the spacer liquid,and FG-64B isolator is used when specific gravity of the measured medium is greater than that of the spacer liquid.The isolator device is located between the instrument and the throttling element,and protective liquid is injected into the isolator and the impulse pipe behind it,so that the instrument will not be corroded by the measured liquid or gas.)

2.2Technicaldataofisolator

1.Working pressure:6.4 MPa(64 kgf/cm²)
2.Specification:

2.3Installation dimension of isolator

Diagram for installation dimension ofFG-64 isolator(as follows)

3.Balance

3.1Purposeofbalancer

FP-64A and FP-64B balancers are accessories for measuring liquid levels.The FP-64A single-layer balancer is used for measuring the liquid level of open or low pressure vessel.

The FP-64Bdouble-layer balanceris adopted for measuring the water level ofboiler water drum.

3.2Technicaldataofbalancer

1.Working pressure: 6.4 MPa(64 kgf/cm²)
2.Measuring range:

Determined by the differential pressure measuring range of the differential pressure gauge for the FP-64A type

± 1 . 8 { k p a } { ~ } ± 5 kpa for the FP-64B type

3.3Installation dimension of balancer

Diagram for installation dimension of FP-64 balancer(as follows)

FP-64A

FP-64B

4.Pressure tapping pipe and pipe fittings

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The standard valve diameters of throttling devices are mainly DN6 and DN15,and the corresponding outer diameter and wall thickness of the pressure tapping pipe are \boldsymbol { \Phi } 1 4 x \boldsymbol { 3 } and \boldsymbol { \Phi } 2 2 x 4 .Common pressure tapping pipes include straight pressure tapping pipes and S-shaped pressure tapping pipes,and the outline is roughlyas follows:

5.Three-valveManifoldand Five-valveManifold

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Whenthe integrated throttling device needs to beequippedwithathree-valvemanifold(or five-valvemanifold),differentmountingbolts shall be provided for installing differential pressuretransmittersofdifferentbrands. Ifthedifferential pressure transmitterisnot purchased byus,please provide the brand of differential pressure transmitter to helpselect the corresponding valve group mounting bolts.

Precautions for the selection of three-valve manifold(or five-valve manifold):

1.There are two common spacings for valve groups,which are 3 5 \ {mm } and 5 4 ~ {mm } respectively depending on different installation spacings,and shall not be exchanged. 2.Check the valve group for proper pressure during selection. 3.Pay attention to the applicability of gaskets according to different applicable media of the valve group. 4.The manufacturer of valve group shall have the TS special equipment production license due to the requirements for product safety.

High riskof safetyaccidents <br>Five-valveManifold

ScheduleIData CorrectionafterRealFlowCalibration

During the real flow calibration of differential pressure flowmeter, the coefficient detection method is generally adopted to measure the discharge coefficient or flow coefficient of differential pressure devices.The basic flow formula of differential pressure flowmeter is as follows:

{ { M a s s ~ f l o w } } q _ { m } = { / { C } { sqrt { 1 - { \boldsymbol { β } } ^ { 4 } } } } * { \boldsymbol { \varepsilon } } * { / { π } { 4 } } * { \boldsymbol { d } } ^ { 2 } * { sqrt { 2 \Delta P * \rho } } Or （204号 q _ { m } = α * \varepsilon * / { π } { 4 } * d ^ { 2 } * sqrt { 2 \Delta P * \rho } （204号
{ { V o l u m e ~ f l o w } } \quad q _ { V } = { / { C } { sqrt { 1 - { β ^ { 4 } } } } } * \varepsilon * { / { π } { 4 } } * { d ^ { 2 } } * sqrt { 2 \Delta P / \rho } Or q _ { \nu } = α * \varepsilon * / { π } { 4 } * d ^ { 2 } * sqrt { 2 \Delta P / \rho }
C -discharge coefficient
\mathfrak { a } - flow coefficient α = / { C } { sqrt { 1 - β ^ { 4 } } }

The product of discharge coefficient in the above formula multiplied by the flow coefficient \mathfrak { a } is the theoretical value in the design calculation,which can also be obtained after real flow calibration and recorded as C1 or αl.Substituting C1 or α1 into the above formula or the formulain the design calculation for recalculation can correct the theoretical value and improve the accuracy.Generally,two methods,i.e. flow value correction or range change of differential pressure transmitter,are adopted,as follows:

Flow correction: q _ { m 1 } = q _ { m } * / { C _ { 1 } } { C } \quad { O r } \ : \ : q _ { V 1 } = q _ { V } * / { C _ { 1 } } { C }
Range change of transmitter: \triangle { P l } { = } \triangle { P } * \left( { C } / { C } 1 \right) ^ { 2 }
C-theoretical discharge coefficient
\mathfrak { a } - theoretical flow coefficient
C1-actual discharge coefficient
αl-actual flow coefficient
qm- theoretical mass flow
qm1-actual mass flow
qv - theoretical volume flow
qvl-actual volume flow

Schedule II Precautions for Ordering

In order that the Design and Production Department can accurately design,calculate and manufacture the throtling device according to the user's requirements,the user shall provide detailed technical parameters when ordering or fillinclearly according to the requirements of the purchase order.

ContactList for Technical Parameters ofThrottling Device

Purchaser: Address: Contact: Tel.: Qty:

Model of throttle
device
Fluid name Medium Liquid Gas Steam
Scale flow t/h （20 \left( { m } ^ { 3 } / { h } \right) （20号 Value in working condition
Maximum flow （204号 { { _ { t / h } } } （20 （20 \left( { m } ^ { 3 } / { h } \right) （204号 Determine the gas state Value at 0 ^ { \circ } { C } ,101.325KPa
Common flow t/h （204号 ( { m } ^ { 3 } / { h } ) （204号 value at 2 0 ^ { \circ } { C } ,101.325 KPa
Minimum flow t/h （204号 ( { m } ^ { 3 } / { h } ) （20
Working pressure MPa Liquidy kg/m³in State
Working temperature （204号 { { } ^ { \circ } C } （2 Fluid visco Pa.s
Regional atmospheric Pa Remaiivty %in State
Design differential KPa Alloswabloss KPa
Inepr diameter of mm Pipterials
Flange standard
Connection method Flange connection Welding
Installation method Horizontal Vertical: top-down ↓ Vertical: bottom-up ↑ Condenser Isolator Settler Gas collector Stop valve
Requiredaccessories Horizontal ]Vertical: top-down
Goampmixiture 1. % 2. （20 % （20 3. （204号 % （2
SchematicDiagram
of Pipe Laying
Notes

Filling notes:

① Theparameterlistandthecontractshallbeusedasthebasis forordering.Thedatamustbecorrectandaccurate inconsistentunit,
and shall not be altered; ② Theeferencestateofthegasflowunitshallbeseletedcorrctlyotherwiseitwillhaveagreatimpactonteflowmeasurement
accuracy. ③ The sum of the volume percentage of the gas mixture shall be equal to 100 % ： ④ When the measured fluid is wateror steam,the density and viscosity of the fluid may not be filed in; ⑤ Iftheuserhasno specialrequirements,theflangesofcomponents shallbeprovidedaccordingto theCompany'sstadards.

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Address:No.61,Middle Section of Huangshan Avenue,New North Zone,Chongqing, China Tel:023-67032678 67032666 67032667 67032668 67032669 Fax:023-67032676 Postalcode:401121 Website:www.sicflow.com.cn Email: flowmaster@sicc.com.cn flowmaster@sicflow.com.cn

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