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Raw Mill Bag House Fan Vibration Critical Issue AMP

Hi there, I would like to share the vibration trend of our Raw mill Bag House Fan. the fan has been running with abnormal vibration from 4.5 to 7 mm/sec on Horizontal point NDE bearing HH for last 6 months. the main problem is coating and fine dust that is coming from the bag house chambers due to worn and useless bags. this coating build up on fan impeller rapidly and results the fan is

High Vibration Problem at Raw Mill Motor AMP

Dear Analysts, We are facing an issue on our cement plant. It's raw mill main drive motor of 4300kw. On no load condition, vibration is normal but as the feed come, vibration reaches to 4-6 mm/sec (fluctuating between 4 and 6) and whole vibration is on 85Hz (which is natural frequency of end shield bearing housing as told by manufacturer). According to manufacturer, this frequency is being

Plant Engineering Understanding fan vibration and

Vibration occurs during fan operation and may have many causes, one of which could be imbalance. Other causes of vibration include mechanical looseness, coupling misalignment, defective bearings, insufficient flatness of bearing mounting surfaces, rotor cracks, driver vibration, and V-belt slippage.

(PDF) Condition Monitoring Based on Vibration

B) schematic diagram of the raw mill fan Trend chart of bearing condition indicator for NDE Electromotor. The enveloped waterfall spectrum diagram of NDE bearing at the vertical direction.

Understanding Vibration and Imbalance in Industrial

2021-2-7  Vibration occurs during fan operation and may have many causes, one of which would be imbalance. Other causes of vibration would include mechanical looseness, coupling misalignment, defective bearings, insufficient flatness of bearing mounting surfaces, rotor cracks, driver vibration and v

CENTRIFUGAL FANS USING VIBRATION ANALYSIS TO

2019-10-7  the vibration at fan speed is typically the highest vibration peak in spectra taken on the motor. It can be confirmed by measuring phase in the axial direction at fan speed. Misalignment will cause phase differences at or approaching 180° between the motor and fan inboard bearings (closest to the pulleys) with phase comparisons made at fan

Case Studies Machine Monitoring, Vibration

Complete vibration monitoring system predicts bearing-failure; saves expeller from severe damage. IDE vEdge on a raw mill gearbox in a plant of India’s largest cement producer saved 8 hours & 396 Thousand USD. Read More. Cement/Fan. Edge computing device on a cooler fan in cement mill saved downtime of 8 hours & 258 Thousand USD. Read More.

Cooling Fan Bearing Fault Identification Using Vibration

2011-6-15  However, the literature on computer cooling fan bearing reliability is very limited [2, 9, 10]. It is a challenge to identify ball bearing fault signatures based on vibration signal because the bearing components, including inner race, outer race, cage, and rollers, complicate the bearing vibration signals. When a local fault exists in a ball

Optimizing Raw Mills Performance ; the Materials WAY

2019-6-22  Parameters Capacity kwh/tonne Mill Vibration. Max 90 mm 240 8.05 5--7 often a higher capacity raw mill fan & large separator / classifier is required. A review of recent raw mill designs

Vibration Analysis Explained Reliable Plant

2020-8-15  Vibration analysis revealed that once fan No. 2 was turned on, a slight increase in vibration amplitude across all three points of measurement occurred, while fan No. 1 remained the same. Testing showed the highest amplitude appeared in the motor outboard vertical at 0.456 inches per second, with a dominant peak at 841 cycles per minute

Case Study Solving a Forced Draft Fan Problem

2021-2-6  Mechanical Solutions, Inc. (MSI) was contracted by a paper mill to solve excessive vibration problems on Induced-Draft and Forced-Draft fans and their respective drive trains. This case history discusses the motor driven FD fan problem and solution.. Figure 1. Freeze frame picture from an ODS animation showing the “Rocking” Motion of the FD fan housing.

Published May 10, 2011 Vibration Analysis

2016-2-16  Vibration is increasingly becoming a problem as machine speeds have increased and paper quality vibration analyst is a highly valued member of any field service or mill maintenance team. Published May 10, 2011 Vibration Analysis Raw time waveform analysis

Sleeve Bearing Problems Vibration School

2015-8-31  Measuring vibration on the housing of a sleeve bearing is unreliable since the housing moves only a small fraction (perhaps 10% or even less) of what the shaft is moving. Time Domain Looking at the raw time signals will give information on exactly how the shaft is moving and give visual notice of problems such as rubs that spectra will

VIBRATION MONITORING OF COOLING TOWERS

2018-8-30  On belt driven fan to collect vibration data on the fan inboard pillow block bearing, on the motor inboard bearing, and intermediary bearings on the fan shaft. In general, most cooling tower fans run at a speed somewhere between 90 and 300 revolutions per minute (rpm) while

NPTEL :: Mechanical Engineering Vibration control

2020-6-10  NPTEL provides E-learning through online Web and Video courses various streams.

228257770-Vrm-Presentation.ppt Mill (Grinding

2021-2-5  table bearing Working principle Vertical. Product fineness on 90/212 microns for raw mill ,coal mill and blaines for cement mill Feed moisture, % Product moisture, % Feed size How. to high and the mill be filled up with material and trip on vibration, because the mill fan dont have the capacity to transport material out of the mill.

PROCESS DIAGNOSTIC STUDIES FOR CEMENT MILL

2013-3-13  Separator Fan 248300 m 3/h ESP Fan 74100 m 3/h 497 mmwg 375 mmwg 500 kW 110 kW Bag Filter Fan 21720 m 3/h 185 mmwg 19 kW 3.2 Performance The mill is designed to handle a total ball charge of 324.5 t at 100% loading with a percentage filling of 29.5% in both the chambers.

Improving Fan System Performance NREL

2013-8-26  fan systems, but rather a document that makes users aware of potential performance improvements, provides some practical guidelines, and details where the user can find more help. The sourcebook is divided into three main sections and appendices. Section 1: Introduction to Fan Systems For users unfamiliar with the basics of fans and fan

Vrm Presentation Mill (Grinding) Cement

2015-8-19  ROLLER MILL. Used in cement industry Vertical Mills used for Pre-grinding of clinker (lumps to coarse powder) Finish grinding (lumps to powder) of Coal/Petcoke for kiln Raw materials for kiln Cement, OPC or mixed Slag, pure or mixed VRM Functions Vertical Roller Mill (VRM) Details feed gate (air lock) mill casing water injection dam ring louvre ring nozzle of material scraper mill outlet

9330 Vibration Transmitter Emerson Electric

2020-3-6  The AMS 9330 Vibration Transmitter allows for continuous monitoring of a wide variety of plant and mill machinery, including motors, fans, cooling tower fans, pumps, and compressors. The AMS 9330 connects to a standard accelerometer and can be configured to deliver any desired standard vibration and/or temperature value.

FD, PA, ID FANS Low Cost Vibration Monitoring Systems

2017-5-22  Bearing Critical Machines. A PdM or Data Collector program can be done supplementary or in conjunction to a Vibration Protection System. STI’s Vibration Monitoring Systems below provide BNC connectors to connect Analyzers or Data Collectors to the raw (buffered) signal for each sensor. Protection System BOM using Plant PLC or DCS:

Published May 10, 2011 Vibration Analysis

2016-2-16  Vibration is increasingly becoming a problem as machine speeds have increased and paper quality vibration analyst is a highly valued member of any field service or mill maintenance team. Published May 10, 2011 Vibration Analysis Raw time waveform analysis

Vibration monitoring to boost efficiency

2018-7-9  Vibration monitoring in the cement industry Cement manufacturing is one of the belts, raw mills, elevators, separators and blowers are the motor and gearbox assemblies. In each case it is the fan. Depending upon the criticality of the application, and the budget available,

VIBRATION MONITORING OF COOLING TOWERS

2018-8-30  On belt driven fan to collect vibration data on the fan inboard pillow block bearing, on the motor inboard bearing, and intermediary bearings on the fan shaft. In general, most cooling tower fans run at a speed somewhere between 90 and 300 revolutions per minute (rpm) while

Measuring Vibration with Accelerometers NI

2020-7-15  Vibration is most commonly measured using a ceramic piezoelectric sensor or accelerometer. An accelerometer is a sensor that measures the dynamic acceleration of a physical device as a voltage. Accelerometers are full-contact transducers typically mounted directly on high-frequency elements, such as rolling-element bearings, gearboxes, or spinning blades.

Improving Fan System Performance NREL

2013-8-26  fan systems, but rather a document that makes users aware of potential performance improvements, provides some practical guidelines, and details where the user can find more help. The sourcebook is divided into three main sections and appendices. Section 1: Introduction to Fan Systems For users unfamiliar with the basics of fans and fan

(PDF) SKF Reliability Systems ® Vibration Diagnostic

However, this vibration signal is of such low energy that, with overall vibration monitoring, it is lost in the machine's other rotational and structural vibration noise.Envelope detection filters out low frequency rotational signals and enhances the bearing's repetitive impact type signals to focus on repetitive events in the bearing defect

Report about the repairation of the Raw mill Slide

The Raw mill line 1 has a problem in the temperature of the outlet shoe bearings and Thrust bearing, the raw mill shutdown continuously So ASEC take some actions: 1- Change the thrust bearing due to it have a wear 2- Change the oil due to it was very dirty 3- Before the previous action we erect a new seal and new felt because we think that the