Nav: Home

Sealing properties and its influence factors of spherical mechanical seal

November 23, 2016

The spherical mechanical seal which can automatically adjust the contact state of sealing surfaces is proposed to replace the frequently-used plane mechanical seal in order to solve the problems that when a marine stern shaft is bent with shafting misalignment and stern bearing wear factors, etc., the sealing properties of a plane mechanical seal is declined with the increase of both contact pressure and temperature of sealing surface. The sealing properties of a spherical mechanical seal is directly influenced by the sealing structure size such as sealing spherical radius, the distance between stator and rotary ring seats as well as both inner and outer diameters of stator ring. The thermal-structure coupling model of the spherical mechanical seal in underwater vehicles is built with the ANSYS finite element method, and the influence of structure size on the sealing performances of the spherical mechanical seal is discussed. The study results show that as spherical radius is increased, the contact region of spherical sealing surfaces is decreased and the opening region is expanded, and the highest temperature and maximum contact pressure on the spherical sealing surfaces are raised. As the inner or outer diameter of the stator ring is increased, the maximum contact pressure of the former is raised, and one of the latter is declined, but the highest temperatures of both on sealing surfaces are enhanced linearly. When the distance between static and rotary ring seats is increased, the highest temperature of sealing surface and maximum contact pressure are increased in a nonlinear way. These conclusions are of important theoretical significance and engineering application value for the structural optimization of spherical mechanical seals in vessels, particularly of underwater vehicles.
-end-
For more information, please visit http://www.benthamopen.com/EPUB/BSP-TOMEJ-2015-7

Reference: Zhou, X.; et al (2016). Research on Sealing Properties and Its Influence Factors of Spherical Mechanical Seal Based on ANSYS., DOI: 10.2174/1874155X01610010160

Bentham Science Publishers

Related Temperature Articles:

Who takes the temperature in our cells?
The conditions in the environment are subject to large fluctuations.
Taking the temperature of dark matter
Warm, cold, just right? Physicists at UC Davis are using gravitational lensing to take the temperature of dark matter, the mysterious substance that makes up about a quarter of our universe.
Thermal siphon effect: heat flows from low temperature to high temperature
In this work, researchers study (both thermal and electric) energy transport in physical networks that rewired from 2D regular lattices.
Despite temperature shifts, treehoppers manage to mate
A rare bright spot among dismal climate change predictions, new research findings show that some singing insects are likely to manage to reproduce even in the midst of potentially disruptive temperature changes.
Precise temperature measurements with invisible light
NIST researchers have invented a portable, remarkably stable thermometer capable of measuring temperatures to a precision of within a few thousandths of a degree Celsius.
The mechanism of high-temperature superconductivity is found
Russian physicist Viktor Lakhno from Keldysh Institute of Applied Mathematics, RAS considers symmetrical bipolarons as a basis of high-temperature superconductivity.
Scientists identify how plants sense temperature
A UC Riverside researcher is leading a team exploring how plants respond to temperature.
Responses of benthic foraminifera to changes of temperature and salinity
Benthic foraminifera is numerous single-celled protozoan species that showed high sensitivity to environmental changes.
High-temperature electronics? That's hot
A new organic polymer blend allows plastic electronics to function in high temperatures without sacrificing performance.
How to melt gold at room temperature
When the tension rises, unexpected things can happen -- not least when it comes to gold atoms.
More Temperature News and Temperature Current Events

Trending Science News

Current Coronavirus (COVID-19) News

Top Science Podcasts

We have hand picked the top science podcasts of 2020.
Now Playing: TED Radio Hour

Listen Again: Meditations on Loneliness
Original broadcast date: April 24, 2020. We're a social species now living in isolation. But loneliness was a problem well before this era of social distancing. This hour, TED speakers explore how we can live and make peace with loneliness. Guests on the show include author and illustrator Jonny Sun, psychologist Susan Pinker, architect Grace Kim, and writer Suleika Jaouad.
Now Playing: Science for the People

#565 The Great Wide Indoors
We're all spending a bit more time indoors this summer than we probably figured. But did you ever stop to think about why the places we live and work as designed the way they are? And how they could be designed better? We're talking with Emily Anthes about her new book "The Great Indoors: The Surprising Science of how Buildings Shape our Behavior, Health and Happiness".
Now Playing: Radiolab

The Third. A TED Talk.
Jad gives a TED talk about his life as a journalist and how Radiolab has evolved over the years. Here's how TED described it:How do you end a story? Host of Radiolab Jad Abumrad tells how his search for an answer led him home to the mountains of Tennessee, where he met an unexpected teacher: Dolly Parton.Jad Nicholas Abumrad is a Lebanese-American radio host, composer and producer. He is the founder of the syndicated public radio program Radiolab, which is broadcast on over 600 radio stations nationwide and is downloaded more than 120 million times a year as a podcast. He also created More Perfect, a podcast that tells the stories behind the Supreme Court's most famous decisions. And most recently, Dolly Parton's America, a nine-episode podcast exploring the life and times of the iconic country music star. Abumrad has received three Peabody Awards and was named a MacArthur Fellow in 2011.