EagleBurgmann international
EagleBurgmann WORLDWIDE
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Products
API Plan 53B
API Plan 53B
Barrier fluid system pressurized by a bladder accumulator supplying clean liquid for an arrangement 3 pressurized dual seal.
A Cooler
B Bladder accumulator
C Drain
D Vent
Seal chamber details
4 Flush (F)
5 Liquid barrier OUT (LBO)
6 Liquid barrier IN (LBI)
7 Seal chamber
Example seal: EagleBurgmann H75A4-T dual pusher mechanical seal.
P&ID according to API
Key
1 Make-up barrier liquid
2 Bladder accumulator
3 Bladder charge connection
8 Vent
9 Barrier fluid drain
10 Valve* (for checking accumulator bladder integrity)
PI Pressure indicator*
PIT Pressure transmitter with local indicator
TI Temperature indicator**
TIT Temperature transmitter local indicator
* If specified, both the PI and valve 10 shall be installed for checking bladder integrity.
** If specified.
*** Vertically oriented, finned air cooler shall be installed if specified
Features
- The barrier fluid and nitrogen are separated by a bladder which effectively prevents the nitrogen from mixing with the barrier fluid as in the case of a Plan 53A.
- The pumped medium generally does not leak to the atmosphere unless the bladder pressure is lost.
- High reliability as a stand-alone system without need for a permanent nitrogen source and external pressure.
- Heat removal by water or air cooler.
- Uses an internal circulating device to ensure barrier liquid circulation.
- Barrier liquid enters the process medium through the inner seal faces.
Application
- For services where product dilution is acceptable.
- For services where media is unsuitable for flushing the inner seal faces.
- For services where Plan 53A cannot be used due to non-availability of a permanent, reliable nitrogen supply at required pressure.
- For applications with barrier pressures above 16 bar (232 PSI) where Plan 53A cannot be used.
Remarks, checkpoints
- Check with the process engineer if product contamination is acceptable.
- Check barrier fluid compatibility with the media.
- Always pre-charge the bladder at the correct pressure to ensure the required barrier pressure at the operating temperature. Refer to the nameplate affixed to the accumulator.
- Vent the system before start-up. Later ensure that the vent line always remains closed.
- Sense the seal inlet and outlet line temperatures. Difference in the temperatures is an indication of proper flow.
- Ensure that the barrier pressure is always higher than the seal chamber pressure by at least 1.4 bar (20 PSI).
- Since there is less barrier fluid volume in the accumulator, heat dissipation is a function of the cooler efficiency.
Pump media characteristics
- Suspended solids
- Polymerizing and contaminated media
- Poor lubrication properties
- Hazardous / environmentally harmful
- Leakage may form solids
- Close to vaporization point
- Can tolerate dilution with barrier media
Location, function
- Between seals
- Barrier system (psealchamber < pbetweenseals)
- Lubrication, flushing and cooling for both inboard as well as outboard seals.
Configurations
3CW-FB, 3CW-BB, 3CW-FF
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The Eagleburgmann Group
Sealing technology for plants and machines
EagleBurgmann is one of the worldwide leading providers of industrial sealing technology. Mechanical seals, seal supply systems, magnetic couplings, carbon floating ring seals, expansion joints, gaskets and packings as well as comprehensive services are used wherever reliability and safety are needed.
Mechanical seals and more
Sealing technology by EagleBurgmann is used worldwide in oil and gas industries, refineries, the petrochemical, chemical, and pharmaceutical industries, food processing, energy, water, mining, paper, aerospace, and other industries. Close to 5,800 employees provide their ideas, solutions, and commitment so that customers can rely on our sealing technology.
What makes us stand out is our excellent quality, great innovative capacity, and an extensive product portfolio for nearly all industrial processes and fields of application. Our product portfolio includes everything from mechanical seals and seal supply systems to magnetic couplings, carbon floating ring seals, expansion joints, and gaskets and packings as well as comprehensive services. Since we are part of the German Freudenberg and Japanese EKK group, we have all the necessary resources for a firmly based reliable partnership.