Multi-channel high pressure swivel

Abstract

A multi-channel swivel with the wear capability of rigid hard seal means by providing a single mandrel and multiple outer bodies to allow each body to have one or more seals inserted into one or both ends of each body, thereby allowing for three or more seal paths in the swivel.

I claim:  
     
         1 . A swivel comprising 
 a mandrel with two or more fluid passages communicating between an end and the exterior surface of said mandrel,    two or more bodies surrounding said mandrel,    at least two of said bodies having a recess on at least one end for receiving seals.    
     
     
         2 . The invention of  claim 1 , wherein said two or more of bodies having at least one seal retention ring proximate the end of said body after said seals are inserted.  
     
     
         3 . The invention of  claim 1  wherein said two or more bodies are attached together to act as a single unit.  
     
     
         4 . The invention of  claim 1  wherein said two or more bodies are threaded together to act as a single unit.  
     
     
         5 . The invention of  claim 2  wherein said seal retention ring is a threaded gland.  
     
     
         6 . The invention of  claim 2  wherein said seal retention ring in one of said two or more bodies is retained by the position of one of the other of said one or more bodies.  
     
     
         7 . The invention of  claim 1  wherein one of said bodies has and internal surface and another of said one or more bodies has an external surface to engage said internal surface for axial alignment of the first of said bodies to the second of said bodies.  
     
     
         8 . A fluid communication rotary swivel providing the wear capability of utilizing seal rings for the communication of multiple channels of fluid comprising, 
 a mandrel with three or more fluid paths communicating from one or more ends to the external surface of said mandrel,    two or more bodies surrounding said mandrel with at least one end of said two or more of bodies having at least one seal inserted into the end of said outer bodies and having at least one seal retention ring proximate the end of said body after said at least one seal is inserted.    
     
     
         9 . The invention of  claim 8  wherein said two or more bodies are attached together to act as a single unit.  
     
     
         10 . The invention of  claim 8  wherein said two or more bodies are threaded together to act as a single unit.  
     
     
         11 . The invention of  claim 8  wherein said seal retention ring is a threaded gland.  
     
     
         12 . The invention of  claim 8  wherein said seal retention ring in one of said two or more bodies is retained by the position of one of the other of said one or more bodies.  
     
     
         13 . The invention of  claim 8  wherein one of said bodies has and internal surface and another of said one or more bodies has an external surface to engage said internal surface for axial alignment of said first body to said second body.  
     
     
         14 . In a reel for handling one or more hoses from an offshore floating facility such as a drilling vessel or a service vessel to subsea drilling or service equipment, a swivel comprising 
 a mandrel with two or more fluid passages communicating between an end and the exterior surface of said mandrel,    two or more bodies surrounding said mandrel,    said bodies having a recess on at least one end for receiving seals.    
     
     
         15 . The invention of  claim 14 , wherein said two or more of bodies having at least one seal retention ring proximate the end of said body after said seals are inserted.  
     
     
         16 . The invention of  claim 14  wherein said two or more bodies are attached together to act as a single unit.  
     
     
         17 . The invention of  claim 14  wherein said two or more bodies are threaded together to act as a single unit.  
     
     
         18 . The invention of  claim 15  wherein said seal retention ring is a threaded gland.  
     
     
         19 . The invention of  claim 15  wherein said seal retention ring in one of said two or more bodies is retained by the position of one of the other of said one or more bodies.  
     
     
         20 . The invention of  claim 14  wherein one of said bodies has and internal surface and another of said one or more bodies has an external surface to engage said internal surface for axial alignment of the first of said bodies to the second of said bodies.