Hydraulic Decoking Systems Rotary Joint

High-pressure Rotary Joint for hydraulic decoking tool rotation in delayed coking operations

Introduction Features Literature

Hydraulic Decoking Systems Rotary JointHydraulic Decoking Systems Rotary Joint

Brand: Flowserve
Description:

The rotary joint enhances operational efficiency, safety, and equipment life in automated and semi-automated decoking systems used across refineries and petrochemical plants worldwide.

The Flowserve Pacific® heavy-duty rotary joint is robustly designed to support the suspended loads experienced in coking units. Its function is to transmit cutting fluid from the stationary hose connection to the drill stem and cutting tool. Flowserve is continually upgrading its rotary joint to accommodate increasingly higher cutting pressure requirements.

  • Applications:
    Petroleum Production and Refining, Decoking
  • Industries:
    Heavy Oil and Upgrading, Delayed Coking

Features and Benefits

  • Two flange sizes – The rotary joint is available with 125 mm (5 in) 250 PN (1500 lb) or 400 PN (2500 lb) inlet flanges and with optional 150 mm (6 in) Unibolt® or compact flange connections to match the drill stem connector
  • Cast single-piece gooseneck eliminates welds and reduces corrosion
  • Rotary joint drive options –
    • Air piston motor
    • Hydraulic
    • E-motor (with VFD)
  • Dual Seal
    • Increased reliability with a four-year design life
    • Switching from the primary seal to the secondary seal allows for planned maintenance in the event of a seal failure
    • Simple installation reduces downtime
    • Retrofit option for all Flowserve rotary joints
  • Rotary joint upgrade options
    • Convert packing to seal rings
    • Convert vertical air motor to horizontal motor with right angle gear
    • Upgrade Unibolt coupling to direct connect with drill stem
    • Add second bearing for right angle drive shaft
    • Convert to integral gooseneck and support cage
    • Add rotary joint stiffeners

Operating Parameters

Two models available:

  • Pressures to
    • 205 bar (3000 psi)
    • 430 bar (6230 psi)
  • Speeds of 2 to 17 rpm
  • Rotates 30 m (100 ft) to 45 m (140 ft) drill stem lengths
  • Carries axial hydraulic loads in the magnitude of 190 000 J (140 000 ft-lb) through its main thrust bearing
  • Seals hydraulic pressure against atmosphere

®Unibolt is a registered trademark of Cameron International Corporation

Hydraulic Decoking System Equipment Bulletin

Decoking System Equipment Innovation Poster 

Enable safe, continuous rotation of decoking tools with a high-pressure rotary joint built for demanding DCU environments. Contact us today for specs and integration support.