HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Comments
View Comments: Newest First|Oldest First|Threaded View
AnandY
User Rank
Gold
Re: Flow control
AnandY   1/23/2014 10:58:22 PM
NO RATINGS
The hydraulic blast furnaces may have provided a new and efficient solution but many problems are bound to turn up if the problem of flow control is not properly addresses. The stretching of the fluid, especially over long hydraulic lines, must be tested and calculated under stimulated conditions similar to those in the actual furnace. After this, corresponding adjustments can be made in the calibration of whichever flow control systems that you are already using thereby cutting down costs that would have been invested on new systems.

AnandY
User Rank
Gold
Re: Reducing hydraulic spring
AnandY   1/23/2014 10:54:12 PM
NO RATINGS
In order to reduce the hydraulic spring (and as you have clearly pointed this out as one of the main problems that comes with long hydraulic lines) we should focus on the factors that contribute to this. For instance, there is the hose contribution which, though normally insignificant, forms an important consideration when it comes to long hydraulic lines.

William K.
User Rank
Platinum
Reducing hydraulic spring: Done it.
William K.   1/8/2014 5:05:41 PM
NO RATINGS
This is an interesting posting, and quite educational in that I had not been aware of any precision being needed in the loading of blast furnaces. That area is quite far away from the systems that I have designed. So the posting is educational indeed.

But one point, lamenting the springyness of hydraulic systems, I can challenge, since I got much of the spring out of a system in order to make it meet the accuracy requirements. The fact is that hydraulic fluid does not actually compress enough to cause problems. Very small air and gas bubbles do compress, and so it is important to prevent them from being circulated in the system. That is one thing that reduces the system spring. Also, hydraulic lines do stretch, some of them a lot more than others. All hoses are major stretch sources, but using a hose rated for a higher, or even MUCH higher, pressure range reduces the hose contribution to stretch. Likewise, the steel tubing aslo stretches, not very much, but it does stretch a bit. Using tubing with a higher pressure rating and thicker walls will reduce that stretch as well. The result of including all of these choices and selections in a system assembly will often be that the resonant frequency is raised beyond the response ability, resulting in a much more stable system that does not look any different from the outside. That offered us a real competitive advantage for quite a while.



Partner Zone
Latest Analysis
Tesla Motors Inc. took another big step into the battery market last night, officially unveiling a strategy that would enable it to sell batteries into home and grid storage applications.
At some point in the distant future, we may all be driving electric cars. Until then, however, the debate over their ongoing viability rages on.
Machine vision and video streaming systems are used for a variety of purposes, and each has applications for which it is best suited. This denotes that there are differences between them, and these differences can be categorized as the type of lenses used, the resolution of imaging elements, and the underlying software used to interpret the data.
Comic books long have appealed to kids as a fun way to introduce reading and art without being overly didactic. Now a software engineer and project manager from Oklahoma thinks the medium can be used to get them interested in STEM careers.
Sherlock Ohms highlights stories told by engineers who have used their deductive reasoning and technical prowess to troubleshoot and solve the most perplexing engineering mysteries.
More:Blogs|News
Design News Webinar Series
3/31/2015 11:00 a.m. California / 2:00 p.m. New York
2/25/2015 11:00 a.m. California / 2:00 p.m. New York
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
5/7/2015 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
May 4 - 8, Designing Low Power Systems using Battery and Energy Harvesting Energy Sources
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Last Archived Class
Sponsored by Proto Labs
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service