How to calculate thickness of the segmental ring?

  • Thread starter Thread starter saran
  • Start date Start date
  • Tags Tags
    Ring Thickness
AI Thread Summary
The discussion focuses on calculating the thickness of a segmental ring used in pressure seal bonnet valve design. The original poster seeks guidance on this calculation, emphasizing the ring's role in withstanding forces from working pressure. Respondents request additional details about the application, such as whether the system involves a reciprocating or rotating shaft, the type of fluid, and the maximum operating conditions. Clarifications are also made regarding the placement of the segmental seal in relation to the system's components. The conversation highlights the need for more specific information to provide accurate assistance.
saran
Messages
4
Reaction score
1
Moved from new member intro forum
Hi,
I am working as a design engineer. I am new to pressure seal bonnet Valve design. In that valve concept we are using a ring called as Segmental ring. The purpose of this ring is to withstand the entire force acting on the bonnet due to is working pressure. Now i want to know how to calculate the thickness of that ring. Here i am attaching the Picture for your ref. Thanks in advance.
 

Attachments

  • 10e.jpg
    10e.jpg
    35 KB · Views: 543
  • image_gallery.jpg
    image_gallery.jpg
    48.4 KB · Views: 512
Engineering news on Phys.org
Hi saran

As per the first thread in this section of PhysicsForums (PF), this is for introductions only (https://www.physicsforums.com/threads/please-read-no-questions-in-new-member-introductions.776481/). Please post your questions in the other areas of PF.

And also, welcome to PF!

Stevie
 
Baluncore said:
Here is a link to; Mechanical packing design and theory of operation. It includes segmental ring seals.
http://www.c-p-i.com/media/cms_page_media/11/cpi mech pck bklt US-updte6 11-.pdf
We need more information before we can give a better response.

Baluncore said:
Here is a link to; Mechanical packing design and theory of operation. It includes segmental ring seals.
http://www.c-p-i.com/media/cms_page_media/11/cpi mech pck bklt US-updte6 11-.pdf
We need more information before we can give a better response.

Hi Baluncore thanks for your reply. What kind of details you want for this?
 
Is this for a reciprocating or a rotating shaft?
Is it for air, steam or some other fluid?
What is the maximum operating pressure and temperature?

In your section diagram 10e.jpg I see no contact between a moving shaft and a seal that will wear. It appears to only involve a static packing. So where is your segmental seal going to be placed?
 
Posted June 2024 - 15 years after starting this class. I have learned a whole lot. To get to the short course on making your stock car, late model, hobby stock E-mod handle, look at the index below. Read all posts on Roll Center, Jacking effect and Why does car drive straight to the wall when I gas it? Also read You really have two race cars. This will cover 90% of problems you have. Simply put, the car pushes going in and is loose coming out. You do not have enuff downforce on the right...
Thread 'Physics of Stretch: What pressure does a band apply on a cylinder?'
Scenario 1 (figure 1) A continuous loop of elastic material is stretched around two metal bars. The top bar is attached to a load cell that reads force. The lower bar can be moved downwards to stretch the elastic material. The lower bar is moved downwards until the two bars are 1190mm apart, stretching the elastic material. The bars are 5mm thick, so the total internal loop length is 1200mm (1190mm + 5mm + 5mm). At this level of stretch, the load cell reads 45N tensile force. Key numbers...
I'm trying to decide what size and type of galvanized steel I need for 2 cantilever extensions. The cantilever is 5 ft. The space between the two cantilever arms is a 17 ft Gap the center 7 ft of the 17 ft Gap we'll need to Bear approximately 17,000 lb spread evenly from the front of the cantilever to the back of the cantilever over 5 ft. I will put support beams across these cantilever arms to support the load evenly
Back
Top