Application Pump

8/3/2019 Application Pump

http://slidepdf.com/reader/full/application-pump 1/24

ProvibTech’s Application Note_ Power Generation

www.provibtech.com

20 / 33

Application_BFP (Boiler Feed Pump)

Apart from solutions for critical machines monitoring, ProvibTech also has cost ‐effective and one

stop solution for essential or general purpose machines. In this case, we lead an example for Boiler

Feed Pump for your reference. For these machines, typically mini rack(12”) or DTMs also can supply

good solution if 19” rack is not accepted due limited space or budget issue.

Application Layout

This layout is to have a clear but simple introduction about the main measurement points for Boiler

Feed Pump.

Below diagram is to introduce how ProvibTech’s mini rack system running with PCM360 system. For

such small machines, ProvibTech also can supply a lower level online condition monitoring system as

one computer integrates data acquisition, server and display function. It saves customer lots of cost

without reducing system running efficiency and speed.




www.provibtech.com

21 / 33

Apart from the rack solutions, ProvibTech is also able to supply a very flexible and value for money

solution by DTM. DTM is complete digital designed which makes the connection to ProvibTech’s

PCM370/PCM360 or third party software by Modbus RTU protocol available. With its redundant

+24VDC power supply and redundant 4‐20mA output, it makes the continuous monitoring more

reliable and effective. And most important, DTM10 could be configured into the type for shaft

vibration, thrust position, speed with help of ProvibTech’s DTM‐CFG software, which can make the

customer stock as less as possible finally reduce the maintain time and cost.




www.provibtech.com

22 / 33

Turbine BFP

Boiler Feed Pump_Turbine

PCM360 SERVER & DAQ

DAQ card6220

DTM10

DTM10

DTM10

DTM10

DTM10 TM900

DTM10

DTM10

DTM10

DTM10

DTM10 TM900

PCM-GP

Power Supply

Digital Transmitter Monitor

Static/Dynamic/Transient




www.provibtech.com

3 / 34

ProvibTech Products

Transducers

TM0180

The TM0180 (8mm) is designed for long life cycles and are suitable for harsh environments.

ProvibTech realizes one of the most significant problems in proximity probe installations are ground

loops and loss of isolation due to

damaged cable jackets. ProvibTech’s

custom rugged cable jacket prevents

the probe cable from breaking and

tearing and is highly resistive to

corrosive environments.

The TM0180 probe and TM0181(extension cable) are equipped with a standard protective rubber

boot, which covers the connectors and prevents oil and dirt penetration.

The TM0180 series probes come in 0.5m and 1.0m cable lengths, as well as, special lengths of 5.0m

and 9.0m with an integrated probe and extension cable design.

The probe may be selected in English or metric units, as well as, reverse mounting options. Reverse

mount probes are used with TM0393X probe housings for hazardous areas.

With up to 2mm(80mil) linear range,TM0180 is generally applied for radial vibration , thrust position,

rotation speed ,eccentricity and phase reference. It is frequently used with ProvibTech’s extension

cable TM0181 and driver TM0182 and reverse probe housing TM0393X.

TM0110

The 11mm probe has up to 4mm (160mil) linear range. The TM0110 probe is recommended when a

longer linear range is required. The TM0110 proximity probe system is designed to meet API 670

industrial standard.

TM0110 is generally applied for thrust position. It is frequently used with

ProvibTech’s extension cable TM0181 and driver TM0182.

TM0120

The 25mm probe has up to 12mm (470mil) linear range. The probe is




www.provibtech.com

4 / 34

designed for measuring differential expansion. The TM0120 integrates the probe, extension cable

and the driver into one unit. This integral proximity probe is designed for easy field installation.

The TM0120 probe comes in lengths of 1m, 5m and 9m standard cable (2 conductor shielded cable).

TM0793V/TM0782A

TM0793V is with sensitivity 4.0mV/mm/sec (100mV/in/sec). TM0782A

is with sensitivity 100mV/g. TM0782A and TM0793V are piezoelectric

accelerometer/velocity transducer directly interfaces with

ProvibTech’s signal conditioners PT2060, DTMs, DM200 or TR1101.

TM0602

For steam turbine applications, the relative case expansion due to thermal effect should be

monitored. Case expansion is the thermal growth of the machine case as it expands during machine

start ‐up and on ‐line operations. The TM0602 is typically mounted on the foundation at the opposite

end from where the turbine casing is attached to the foundation. The case expansion transducer

system provides information on the growth of the machine case relative to the foundation.

LVDTs (linear variable differential transformers) are used to measure the case expansion. Three

different linear ranges are available: 25mm (1.0”),

50mm (2.0”) and 100mm (4.0”). The case

expansion transducer assembly consists of an LVDT

that is housed in a weatherproof protective

enclosure.

Monitors

PT2060/10/20/31/35/40/43/53/91/96/98/90/99




www.provibtech.com

5 / 34

PT2060/10

Proximity Module (4 channels)

Radial vibration

Axial/ Thrust position

Eccentricity

Differential expansion

Low-frequency vibration

Speed output

Zero speed and speed

Reverse rotational protection output

PT2060/20

Seismic Module (4 channels)

Acceleration, Velocity and Displacement

Low Frequency acceleration, Velocity or Displacement

Case Expansion

Case expansion output—paired

Case expansion output—single

PT2060/31 Temperature Module(8 channels )

RTD, TC

PT2060/35 Process Input Module

16 channels per module

PT2060/40 Relay Module(16 channels)

Relay output (SPDT)




www.provibtech.com

6 / 34

PT2060/43 Redundant Relay Module(8 channels)

Relay output(DPDT)

PT2060/53

Over Speed Module(1 or 3 channels)

Over-speed protection

The following function only for channel 3 and channel 4.

Radial vibration: monitoring shaft vibration, single or dual XY

Axial/ Thrust position: monitoring shaft thrust position, with 5mm,8mm, and 11 mm proximity probes

Eccentricity

Differential expansion

Low-frequency vibration

Speed output

zero speed

Reverse rotational protection output

PT2060/91

System Interface Module

Connect to a configuration station

Communicate to PT2060 system racks

Communicate to other control systems (PLC/DCS or Historian)

Provides two phase references channels

Provide storage of system and alarm events

PT2060/98

Display Module

ID each channel, and arrange the routing

Setup data collection strategy

Display machine photo and real-time data and status on top of thephoto

Real-time bar graph/ status list/ alarm status of each channel

Alarm events

Trend plot on each channel

Touch-panel for easy operation

Network to control systems (PLC/DCS or Historian) via Modbus




www.provibtech.com

7 / 34

PT2060/90 Power Supply Module

Redundant Power supply

PT2060/99 Standard 19” or 12” rack

DTM10/DTM20/ DTM96

DTM10‐301 Proximity Distributed Transmitter Monitor.

With internal driver, for Radial Vibration


With internal driver, for Axial Position


With internal driver, for Rotation Speed /Phase Reference


With external driver, for Radial Vibration


With external driver, for Axial Position




www.provibtech.com

8 / 34


With external driver, for Rotation Speed /Phase Reference

DTM20‐101 Seismic Vibration Distributed Transmitter Monitor.

Run with current mode accelerometer with 100mV/g, velocity sensor with

4mV/mm/s or seismic velocity sensor

DTM96 Communication module. Optical isolated, RS485, RS422, RS232

PCM360 Online Condition Monitoring System

Introduction of PCM360

ProvibTech’s PCM360 is a machine

condition management system that collects,

stores, analyzes and is capable of

transmitting machine status monitoring

information over local or wide area network.

The PCM360 provides static, dynamic and

transient data collection and analysis; such

as graphical indication of vibration level,

trend, waveform, spectrum, bode plots,

cascade plots and much more.

All ProvibTech’s monitors and transmitters

can quickly and easily be integrated to upload machine status and its dynamic data to the PCM360.

The PCM360 obtains both critical machinery running status and balance of plant running status.

Additionally, the PCM360 collects process data as 4‐20mA input or digital monitor input via Modbus,

etc. The PCM360 provides an integrated system solution for asset management resulting in a total

solution for machine maintenance and protection.

Leading Features of PCM360

Integrates plant condition monitoring and process data into one database

User friendly interface for instant data analysis with minimal training required of field staff

Maximum flexibility and expandability of the software system with object oriented modular

design

Transient , dynamic and process data collection

Built on Microsoft® SQL Server database to assure better data management and reliable

networking




www.provibtech.com

9 / 34

Client/ Server architecture enables user to access data anywhere on intranet/ internet

Readily integrates with third party vibration monitors and process monitors with minimum

hardware requirements

Multiple digital I/O Protocols, such as Modbus RTU/ TCP

Multiple hardware output modules ready for further data transfer and annunciation in relays

and current transmission

24 hour notification through on site alarms, operator interface and even SMS messaging on

GPRS mobile

Remote notification with SMS messages to any cellular phone with machine running status

Advanced post ‐processing of transient data minimizes data loss, maximizing analysis capability

PCM360 Data Flow Introduction

In addition to running well with transmitters/monitors of ProvibTech itself, with great integrate

ability and versatile interface, PCM360 is also able to interface with diverse transmitters /monitors

/sensors or Modbus TCP Server or OPC server from third party which takes great convenience for

retrofit projects and makes the plant management more efficient and effectively without spending

much money.

Apart from these, PCM360 also can play a role as Modbus TCP Server or OPC Server which makes

interfacing with third party condition monitoring system available.

In conclusion, PCM360 is very flexible and functional. With its reliability, it not only can acquire the

data from third party but also share its data with third party.




www.provibtech.com

10 / 34

Plots Supported By Different Measurement Points

Measurement Point

Device Type

Channel Type Data Type

Single

Channel Dual

Channel

Plots and Lists

bar graph, waveform, spectrum,

bode, polar, cascade,

(dynamic, transient) waterfall,

(dynamic, transient, historical) trend,

status list, alarm list, transient list

Acceleratio

n, Velocity

Dynamic

data,

Transient

data


full spectrum, shaft XY vibration,

bode, polar, cascade, full cascade,





bode, polar, cascade,

waveform with DC coupling,




DAQ

Card:

6013,

6220,6

250

Vibration[f rom Prox]

Dynamic

data,

Transient

data



shaft centerline,

waveform with DC coupling,

shaft XY vibration with DC coupling,




www.provibtech.com

11 / 34

bode, polar, cascade, full cascade,




Position[fr

om Prox],

Process

Static data

bar graph, static trend,

status list, alarm list

Modbu

s DAQ for

Proces

s

Acceleratio

n, Velocity,

Vibration[f rom Prox],

Position[fr

om Prox],

Process

Static data




dynamic waterfall, alarm list,

(static, dynamic)

trend,

status

list

Modbu

s DAQ

for DW —

Dynamic

data, Static

data



dynamic waterfall, alarm list,

(static, dynamic) trend, status list

OPC

Client

Acceleratio

n, Velocity,

Vibration[f

rom Prox],

Position[fr

om Prox],

Process

Static data






www.provibtech.com

12 / 34

Plots

Waveform

plot

(real time and historical)

Waveform

plot with DC coupling


Spectrum

plot (real time and historical) Full

spectrum plot (real time and historical)




www.provibtech.com

13 / 34

Shaft XY

vibration


Shaft XY

vibration with DC coupling


Trend plot

(static, dynamic, transient, historical, and real time, gap)

Waterfall

plot

(dynamic and transient)




www.provibtech.com

14 / 34

Bar Graphshaft

centerline plot (real time and historical)

Bode plotCascade

plot

Full

cascade plot Polar plot




www.provibtech.com

15 / 34

Shaft centerline mode shape Shaft XY vibration mode shape

Lists

Transient list Alarm list

Status list




www.provibtech.com

25 / 34

Measurement Illustration

Shaft X, Y Vibration (Radial Vibration) Shaft X, Y Vibration is for shaft dynamic motion

which is generally measured in a direction

perpendicular to the shaft axis, it is also called

radial vibration or lateral vibration. It is indicated

by PK‐PK with unit μ m or Mil. 5mm or 8mm

proximity probes are often used to observe Shaft X,

Y Vibration. ProvibTech’s proximity probe

TM0105(5mm) and TM0180(8mm) will supply

complete solution.

Please refer to the Figure 1.1 and Figure 1.2 .They are showing the typical way for probe installation

for Radial Vibration.

Apart from the installation way of Figure 1.1 and

Figure 1.2, there’s another installation way, please

refer to Figure 1.3. Probe X is horizontally installed

and Probe Y is vertically installed.

Sometimes, proximity probes will be mounted

inside the machine by probe clamp, and sometimes probes will be mounted with help of probe

holder. ProvibTech’s TM0393X supply a very cost

effective solution for mounting the proximity probes

for these machines whatever for normal pressure or

high pressure purpose. Customer can replace the

probe without opening the machine case which takes great convenience and save lots of time and

maintenance cost. Adjustable penetration depth

+/ ‐13mm(0.512” ) makes the installation very flexible.

Please refer to Figure 1.4 and Figure 1.5 for

installation reference.




www.provibtech.com

26 / 34

Thrust Position (Axial Position)

Thrust Position is to measure the movement of shaft in

the axial direction with respect to some fixed reference.

Typically, the reference is the thrust bearing support

structure or other casing member to which the

displacement probe is mounted. The probe is generally

to observe the thrust collar directly or axial shaft surface.

Thrust Position is also called Axial Position, and it is

indicated by average with unit μ m or Mil. 5mm or 8mm

proximity probes

are often used to

observe Thrust Position. ProvibTech’s proximity probe TM0110(11mm) and TM0180(8mm) will supply complete

solution.

Due Thrust Position is very important for some essential

machines, it is strongly recommended to use dual proximity

probes to monitor Thrust Position as the redundancy will

increase the reliability of the monitoring.

Please refer to Figure 2.1 and Figure 2.2.

Seismic Vibration (Casing Vibration)

Seismic Vibration measures the absolute vibration of machine case or structure. This measurement

doesn’t require other object’s position or movement as a reference. Accelerometers and velocity

sensors are often used for Seimic Vibration. It is also called Casing Vibration. It will be indicated by

PK or PK‐PK or RMS.

The installation direction could be horizontal or vertical. Please refer to Figure 3.1.




www.provibtech.com

27 / 34

Rotation Speed

Rotor speed is important measurements during normal machine operating conditions as well as

during startup and coast down. Sudden unexpected changes in rotor speed may be an indication of

machinery or process malfunction.

Over Speed

Over Speed protection system is mandatory for critical machines especially like steam turbines. Due

the rotation speed for the steam turbine is the most important factor , so generally we use two

proximity probes or three proximity probes to compose a system. It could be 2 out of 2 or 2 out of

3.




www.provibtech.com

28 / 34

Reverse Rotation

For boiler feed pump or some machines, Reverse Rotation monitoring is necessary as the reverse

flow will cause the total machine shutdown finally stop water supplying. Typically Reverse Rotation

requires two proximity probes to mount on the gear or shaft with a notch. Please refer to below

Figure 6.1 for details.

Zero Speed

When the steam turbine or machine is under turning state, the rotation speed should not be very

slow. If it rotates slower than it should be, then it will trip. Zero Speed is similar like speed

monitoring, but Speed monitoring is to trip when it rotate too fast than it should be, and Zero Speed

monitoring is to trip when it rotate too slow than it should be.




www.provibtech.com

29 / 34

Phase Reference

Phase Reference is a transducer that produces a voltage pulse for each turn of the shaft. This signal

is used primarily to measure shaft rotative speed and serves as a reference for measuring vibration

phase lag angle. Typically proximity probe, magnetic pickup, optical pickup are used for measuring Phase Reference.

Please refer to below Figure 7.1 for details.

Differential Expansion Differential Expansion is to measure the axial position of the rotor with respect to the machine

casing at some distance from the thrust bearing. Differential Expansion is usually measured when

machine startup and shutdown as the machine has a big thermal expansion during that period.

The measurement is typically made with a proximity probe transducer mounted to the machine

casing and observing an axial of the rotor.

The proximity probe could be mounted by two ways. One is by normal shaft direction, please refer

to below Figure 9.1.




www.provibtech.com

30 / 34

Another way is mounted by ramp shaft direction. Please refer to below Figure 9.2.

Case Expansion

Case Expansion is to measure axial position of the machine case relative to a fixed reference , usually

the foundation. Changes in casing axial position are the result of thermal expansion and contraction

of the casing during startup and shutdown. It is generally measured by LVDT(Linear Variable

Differential Transformer).

Please refer to below Figure 10.1 for Case Expansion.




www.provibtech.com

31 / 34

Eccentricity

Eccentricity is very important for monitoring turbine rotor bow. PT2060/10 PROX proximity module

can provide sophisticated on ‐line eccentricity monitoring. The monitor is suitable for virtually all

types of rotating machinery in terms of eccentricity. The PT2060/10 PROX proximity module will be continuously measure and monitoring in up to two channels per module.

Eccentricity measurements indicate the deviation of the rotor physical center and the theoretical

center. The difference has to be small enough to allow machine startup without causing damage.

The PT2060/10 PROX proximity module provides peak ‐to ‐peak eccentricity measurement, which

measure the difference between the positive and the negative extremes of the rotor bow. It also has

one more channel that output the position of the rotor.

Operators use eccentricity measurements to determine when a combination of slow roll and heating

have reduced the rotor eccentricity to the point where the turbine can safely be brought up to

speed without damage from excessive vibration or

rotor to stator contact.

Eccentricity is the measurement of Rotor Bow at

rotor slow roll which may be caused by any or a

combination of

Fixed mechanical bow

Temporary thermal bow

Gravity bow




www.provibtech.com

32 / 34

Valve Position

Valve Position is to measure the position of the process inlet

valves on a machine, usually expressed as a percentage of

the valve opening; zero percent is fully closed, 100 percent is fully open.

Please see below Figure 12.1 for Valve Position.

Temperature

Temperature monitoring is also an important parameter to

monitor the machine health status. When something wrong

inside the machine, it will cause more friction which will cause temperature getting higher. Typically

we’ll use RTD/TC sensor to acquire the process signal and transfer to transmitters/monitors, finally

transfer to condition monitoring system.

Flow Rate, Pressure and other process variables

All these parameters are like temperature as they are process variables, and these are to control

something or feedback the health status of the machine. Typically we’ll use different kinds of

sensors to get the process signals and finally transfer to condition monitoring system.

Documents

Application Pump