How to calculate thickness of the segmental ring?

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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
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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.
 

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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?
 
My idea is that I want to use immerse Whitetail Antlers in a fishtank to measure their volumetric displacement (the Boone and Crockett system is the current record measurement standard to place in a juxtaposition with) I would use some sight glass plumbed into the side of the tank to get the change in height so that I can multiply by the tank cross-section. Simple Idea. But... Is there a simple mechanical way to amplify the height in the sight glass to increase measurement precision...

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