1 / 3

Pump Priming Ejectors

Pump Priming: <br>• The suction line of a Centrifugal Pump needs to run full of liquid for the pump to start with the pumping.<br>• This creates a problem when there’s a positive height difference between the Pump Suction level and Sump liquid level. This height difference is known as Suction lift.<br>• Hence the liquid needs to be drawn upto the pump level to ensure pumping start-up. The process of ensuring liquid presence in the suction line of the pump is known as Priming. The Priming process is a compulsory part of pump operation.<br>• Improper priming results into formation of gas pockets in the pump impeller which prevent liquid flow.<br>• Running the pump with improper priming leads to overheating of the motor and mechanical damage to the pump.<br>

crystaltcs
Télécharger la présentation

Pump Priming Ejectors

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Pump Priming Ejectors Pump Priming: The suction line of a Centrifugal Pump needs to run full of liquid for the pump to start with the pumping. This creates a problem when there’s a positive height difference between the Pump Suction level and Sump liquid level. This height difference is known as Suction lift. Hence the liquid needs to be drawn upto the pump level to ensure pumping start-up. The process of ensuring liquid presence in the suction line of the pump is known as Priming. The Priming process is a compulsory part of pump operation. Improper priming results into formation of gas pockets in the pump impeller which prevent liquid flow. Running the pump with improper priming leads to overheating of the motor and mechanical damage to the pump. Ejectors for Pump Priming:

  2. Ejectors operate by creating a vacuum inside the suction line of the pump. The vacuum draws the liquids from sump upto the pump elevation. Ejectors require a Compressed Air Supply as an Energy input. Easy availability of Compressed air and minimal flow requirement allows the Ejector to be easily accommodated by the existing facility. Unlike other priming arrangements such as Foot Valves, Priming Tanks; Ejectors do not require any auxiliary liquid pump for its working. Ejectors are also superior to Vacuum Pump Technology for Priming due to the following reasons: Liquid Ring Vacuum Pumps require a Water/Liquid supply for their operation. In most of the cases Water/Liquid supply cannot be provided unless the Centrifugal Pump in question is started. Dry vacuum pump technology doesn’t tolerate liquid ingestion and is not economically feasible for the application. Vacuum Pumps require considerable maintenance. The high maintenance cost drives the total Lifecycle Cost up. Crystal TCS’s Priming Ejectors:

  3. Designing a Priming Ejector is largely a function of the involved pumping system. Our Engineers after carefully assessing the requirements of associated Pumping Systems have developed a specific set of rules for Priming Ejectors in order to achieve consistent Priming within minimum time with minimal Motive Consumption. We also provide automated control to start and stop the ejector automatically during the pump start-up process. Our Priming System consists of a Priming Ejector, automated air supply valve set to the required Suction lift and a Discharge Silencer. Salient Features of our Priming Ejectors: A wide range of models to choose from, enables achieving optimum priming time. Can easily provide Suction Lifts upto 9m for water pumps. Can operate with Compressed Air pressures as less as 3 Bar(g). Rugged construction and compact size enable installation in difficult to access areas. We manufacture Ejectors in a wide variety of materials (Carbon Steel, Stainless Steel and FRP) to suit the pumping liquid’s corrosive effects. Easily tolerate Liquid ingestion. Reliable and Maintenance free operation. Silent operation. Applications: Priming for Centrifugal Pumps with large size Suction lines (4” and more). Priming for Seawater Pumps. Priming for Corrosive Liquid Pumping. For More Information Please Contact us or call on +91 253 2501600 / 9921391762. http://www.crystaltcs.com/pump-priming-ejectors.php

More Related