Pay-per-view (PPV) format perfect for individual users.
Get immediate access to this interactive eLearning course online. Must be used within 30 days, expires 48 hours after launch.
Language: English French Polish Portuguese Russian
Great for trainers or groups who need unlimited online access to multiple courses. Available in two ways:
Paper Machine Auxiliary Systems Series (Details)Includes 8 courses for $299/year. Paper Library (Details)Includes 92 courses for $1,499/year.
Ideal for corporate licensing and high volume users.
Get Convergence courses into your current LMS to track and report employee training. Or contact us to learn more about the advantages of licensing our courses with the Convergence LMS.
Like what you see?
The full course is 21 minutes long and available in a number of affordable formats.
Explore this page for pricing and delivery options.
Training Time: 21 minutes
Compatibility: Desktop, Tablet, Phone
Based on: Industry Standards and Best Practices
Languages: English, Portuguese, French, Polish, Russian
Liquid-ring vacuum pumps, centrifugal blowers, and steam ejectors are three devices that are commonly used to produce vacuum. This module explains how liquid-ring vacuum pumps create vacuum, explains why vacuum pump seal water should be cool, and describes the operation of liquid-ring vacuum pumps, single-stage and multi-stage centrifugal blowers, and steam ejectors.
At the end of this module, you will be able to:
The following key questions are answered in this module:
How is the seal water used in liquid-ring vacuum pumps?It seals in the pumping chambers and it also cools the incoming air
Why is it important for vacuum pump seal water to be cool?It helps cool the incoming air, which increases its density and the vacuum level produced. It also helps avoid vaporization inside the pumps, which would reduce capacity and efficiency
How is vacuum used on a paper machine?To help dewater the stock in the forming section, to dewater and clean the felts in the press section, and to help transfer the sheet between sections
What is the difference between a centrifugal fan and a centrifugal blower?The American Society of Mechanical Engineers uses the "specific ratio" - the ratio of discharge pressure over suction pressure. Fans have a specific ratio up to 1.11, while blowers have specific ratios of 1.11 to 1.20.
Is a thermocompressor a type of steam ejector?Yes. A thermocompressor is a steam ejector whose purpose is to recover the latent heat content of low pressure steam.
Below is a transcript of the video sample provided for this module:
Centrifugal Cleaners
View Course
Fourdrinier Design and Operation
Paper Machine Hydraulic Systems
Paper Machine Lubrication Systems
Paper Machine Vacuum Systems
Perfect for individual users. Get immediate online access. Must be used within 30 days, expires 48 hours after launch.
DVD alternative for in-person classroom training. Get one or more videos on a USB drive. Content expires after 1 year.
Import our SCORM/AICC compatible eLearning courses into an LMS for administrative tracking and reporting on training.