Tag Archives: eagleburgmann

Case Study: A Single Mechanical Seal, But Twice As Safe Under High Pressure

Mechanical Seal SHVI and Plan 66A for Unmanned Pump Station of an Oil Pipeline

A well-known Canadian operator of an oil pipeline commissioned EagleBurgmann to develop a sealing solution for crude oil pumps. The requirement: It needed to be a single seal that was just as safe as a double seal with buffer pressure system. In addition, the sealing solution was not to be designed for only one pump type but should be installed in various pumps of one station.

SHVI Operating Conditions

The operating parameters were quite extensive: The seal needed to be suitable for a pressure range from 2.5 bar (36 PSI) to 99 bar (1,436 PSI) as well as for shaft diameters from 115 mm to 155 mm (4.53’’ to 6.10’’). Since the pump stations are operated unmanned, the seal must operate without an additional supply system. To protect the environment and personnel, however, the seal housing must not leak if the seal fails unexpectedly.

The solution: Mechanical seal SHVI from EagleBurgmann

These requirements were best met by the SHV series which has proven itself thousands of times over in crude oil pumps and MOL pumps (MOL: Main Oil Line) of all types worldwide for many years. For the Canadian customer, EagleBurgmann developed the SHVI sealing variant with loosely inserted seal face specifically for the high-pressure range. The seal face is single, but is twice as safe under high pressure and is designed such that it always builds a parallel sealing gap with the stationary seat. The deformation behavior of the seal  face was optimized for use in crude oil pumps so that the seal operates reliably even under very high pressures, sliding velocities and temperatures as well as pressure and temperature fluctuations.

Silicon CarbideEagleBurgmann selected a special quality of the silicon carbide material to be used in the pumps of the pipeline operator. This provides the seal face with particularly good emergency running properties and tolerance for partial dry running. In addition, the sliding faces have extremely precisely ground grooves which allow the seal face to be lifted quickly even in the low pressure range and contribute to stable operation in a wide pressure range.

Safety: Optimized API Plan 66A

Plan 66A, which has been available since introduction of API 682 4th Edition, was the obvious choice for the safety concept. Accordingly, the seal housing contains two throttles, and the seal chamber is connected to a pressure transmitter.

SHVI PipelineEagleBurgmann optimized the plan and uses a special inner, floating  throttle. This can withstand a product pressure of 99 bar (1,440 PSI) in an emergency. The pressure transmitter detects pressure changes in the seal chamber and signals an alarm if certain values are exceeded. At the same time, the seal leakage accumulated under low pressure is discharged to a central collection system in the pump station.

Test and Acceptance

The SHVI seal and the optimized Plan 66A were subjected to dynamic and static tests individually and together on EagleBurgmann test benches. The constant and reliable sealing performance in all operating states and the safe function of Plan 66A in the event of a fault provided impressive results. The required system safety was provided at all times.

The new concept of the SHVI single seal with optimized Plan 66A is economical, modular, reliable in operation, and offers the safety of a double seal.

There are plans to convert further pumps of the pipeline operator. The new concept of the SHVI single seal with optimized Plan 66A is economical, modular, reliable in operation and offers the safety of a double seal. For other customers as well, this type of seal has since proven itself in MOL pumps for several thousand operating hours.


To Learn More about the SHV series of mechanical seals, contact us today at 1-800-822-4063 or click the button below.

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Your Seal Pump Just Failed and Production is at a Stop… Now What?

Can your Facility Afford Extra Downtime?

Introducing the new CartexExpress Rapid Ship Program!

CartexExpress

Fast delivery for Cartex mechanical seals is available (if necessary) when an order is received by 12pm CST.


Not familiar with Cartex by EagleBurgmann?

Cartex Mechanical Seals are engineered to provide the extra margin of performance.

EagleBurgmann’s mechanical seals are designed with greater attention to functional details like tighter tolerances for more accurate seal operation, greater axial movement to handle pump shaft movement, seal parts with robust cross sections for optimal seal stability in operation, and castings that meet ASTM A 351/351M standards for proven quality.

cartex mechanical sealHighlights and Advantages of Cartex

  • Ideal for use in ANSI process pumps
  • Universally applicable for packings conversions, retrofits or original equipment
  • Ideal seal for standardizations
  • No dimensional modification of the seal chamber necessary, small radial installation height
  • No damage to the shaft by dynamically loaded o-ring
  • Extended service life
  • Installation faults are avoided, cost-effective
  • No damage caused by dirt entered during assembly
  • Straight-forward and easy installation due to pre-assembled unit (reduced downtimes)

Recommended Applications

Cartex Seals are designed with greater attention to functional details like tighter tolerances for more accurate seal operation, greater axial movement to handle pump shaft movement, seal parts with robust cross sections for optimal seal stability in operation and castings that meet ASTM A 351/351M standards for proven quality.

  • Process, petrochemical, chemical, pharmaceutical, power plant, pulp and paper, water and waste water, mining, food and beverage, universally applicable, ANSI process pumps

Cartex Seal High-Performance Materials

cartex materials


So, Which Cartex Seals are Included in the Express Program?

  • Single seals
    • -ASTN and -ABTN
  • Dual seals
    • -ASDN and -ABDN

cartex express single and dual seals

Comparison With Competition: Part vs Part

Cartex seal faces, o-rings, drive pins and spring are more robust and
specifically engineered for superior strength, heat removal and maximum reliability and performance vs. competing modular seals.

  • Robust engineered design – Less sensitive
  • Fewer o-rings and components – Reduced possible leakage paths
  • High-performance pumping feature – Lower operating temperatures

cartex vs modular


So the next time your production is suddenly at a stop or you have unplanned issues and need a mechanical seal fast – contact Gallagher Fluid Seals and ask about the CartexExpress program.

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H75VN Mechanical Seal for Cumene Pump Station

Retrofitting a Pump with an EagleBurgmann H75VN

Cumene, the common name for isopropylbenzene, is an aromatic hydrocarbon and a colorless liquid under atmospheric conditions with a characteristic smell. It is a component of crude oil and refined fuels and is mainly used in the production of phenol.

The Problem

Ineos in Gladbeck and Degussa in Marl, both located in Germany, are supplied with cumene by a pipeline. The pump station for this pipeline is situated inside the chemical industry park in Marl and is operated by Degussa Infracor. Cumene is classified as hazardous to the environment, so the “TA-Luft” directive (German Clean Air Directive) has to be considered for any sealing solution.

Originally, the pump was equipped with a Flowserve mechanical seal type EUROPAC 613/663 in tandem arrangement. With this seal, the required maximum temperature of the supply medium of 104˚F (40°C) was always exceeded and the seal was continuously squeaking during operation.

Operating Conditions

  • Medium: Cumene
  • Operating temperature: 41˚F – 122˚F (5 – 50˚C)
  • Operating pressure at seal: 17.4 – 34.8 psi (1.2 – 2.4 barg)
  • Pump: Centrifugal pump, type MC 80-260/62
  • Pump manufacturer: Sulzer
  • Speed: 2,975 rpm
  • Seals include materials: H75VN/80-FTA5, AQ1KMG – AQ1KMG
  • Mode of operation: Plan 11 and Plan 52 according to API 682
  • Supply system: TS 2000/M051-A1, operation under atmospheric pressure

The EagleBurgmann Solutionpicture of the H75VN

The critical points of this application are the poor lubrication properties and the low heat capacity of the process medium. The engineered EagleBurgmann H75N mechanical dual seal in tandem arrangement was selected and retrofitted to the pump.

Technical features of the EagleBurgmann H75VN seal:

  • Cartridge unit, easy to install
  • Certified according to API 682/ISO 21049 for the application in flashing hydrocarbons. Meets the requirements for low emission seals based on STLE-limit values
  • Counter-rotating pumping screw to support the circulation of the buffer medium to ensure an optimal cooling and lubrication of the mechanical seal
  • Plan 11 and 52 with multi-point injection: the buffer medium is divided into several sub-currents that are directed towards the sliding face at relatively high flow velocities, improving heat removal from the mechanical seal
  • Self-closing: the seal will remain closed and will keep the full functionality even in situations of pressure reversal or failure of the supply system
  • Perfluoroelastomers due to the chemical resistance

Conclusion

The EagleBurgmann H75VN meets all requirements of the operator regarding the maximum buffer fluid temperature of 104˚F (40°C), and the squeaking of the seal was eliminated. The mechanical seals have been successfully in operation since the beginning of 2006 and have been running to the full satisfaction of the customer, with further pumps retrofitted currently. Additionally, the EagleBurgmann H75VN mechanical seal is now specified as standard for pipeline pumps.


Gallagher Fluid Seals is an exclusive distributor of EagleBurgmann. For more information about custom solutions or mechanical seals, contact our engineering department, or call 800-822-4063.

Gallagher to Partner with EagleBurgmann

Gallagher Fluid Seals, Inc. Awarded Exclusive Distribution Rights with EagleBurgmann

Partnership will expand Gallagher’s OEM and MRO business into the mechanical sealing industry

Gallagher Fluid Seals, Inc. has exciting news for its customers. EagleBurgmann, a leading provider of industrial sealing technology, has awarded Gallagher Fluid Seals with exclusive distribution rights in the Northeast and Mid-Atlantic territory of the United States. The territory includes Maine, Vermont, Massachusetts, Connecticut, New Hampshire, Rhode Island, New York, New Jersey, Pennsylvania, Delaware, Maryland, Washington D.C., and Virginia.

picture of gallagher and eagleburgmann map

2019 marks 63-years in business for Gallagher. As the global sealing landscape has continued to evolve since 1956, so has Gallagher. New technology brings new sealing challenges, and that has allowed the expansion of new areas of expertise and growth – enter mechanical sealing.

EagleBurgmann has a wide array of product lines, including: mechanical seals, carbon floating ring seals, and magnetic couplings. Gallagher is focusing strictly on mechanical sealing products from EagleBurgmann, which include: Cartex Cartridge Seals, SeccoMix 1, H75VN, Splitex® Cartridge Split Seals, Unitex, MBS682 Metal Bellows Seal, and much more.

“We are thrilled to have this new partnership with EagleBurgmann,” says Chris Gallagher, CEO of Gallagher Fluid Seals. “EagleBurgmann’s gold-standard level of service, quality, and support will allow us to enter this new market both efficiently and effectively.”

With Gallagher account executives located throughout the Northeast & Mid-Atlantic, and a team of experienced full-time mechanical engineers on staff, customers can expect prompt service and custom sealing solutions if their application requires it.

This new partnership is an exciting start to 2019, and Gallagher will continue in its mission to work with customers whose sealing applications are critical to the performance of their equipment.

Want to speak with an engineer or account executive? Contact us today:

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About Gallagher Fluid Seals, Inc.

Gallagher Fluid Seals, Inc. is a global distributor and manufacturer of Fluid Sealing products. Gallagher represents the strongest seal manufacturers in the world, in addition to operating its own gasket fabrication facility. Gallagher serves both OEM & MRO customers through the development of technical solutions that solve sealing challenges.

Gallagher Fluid Seals currently operates 3 Facilities; its headquarters in King of Prussia Pennsylvania, and it’s 40,000 square foot gasket fabrication and sales office in East Longmeadow, Massachusetts, and the newly-acquired Quality Seals office in Bethel, Connecticut.

Contact:
Kevin Patton
Marketing & Communications Analyst
610-277-8200

 

About EagleBurgmann

EagleBurgmann is one of the leading providers of industrial sealing technology on the international stage. Their products and comprehensive services are used wherever the key requirements are reliability and safety.

Excellent quality, close proximity to their customers, great capacity for innovation and an extensive product portfolio for nearly all industrial processes and fields of application are what make them stand out.

Their portfolio includes mechanical seals and seal supply systems, magnetic couplings, carbon floating ring seals, expansion joints and gaskets, packings, special products and extensive services. Being part of the German Freudenberg and Japanese EKK group gives EagleBurgmann all the resources they need for a reliable partnership built on solid foundations. Worldwide.

Contact:
Ekaterina Shkarbul
Marketing Manager BA Americas

EagleBurgmann’s Patented SeccoLip

A patented lip design and the patented combination of PTFE sealing lip and sliding bearing in the lip seal element provide the new dry running seal “SeccoLip” from EagleBurgmann with particularly high flexibility. These technical features help the lip seal compensate directly and safely radial deflections of the shafts in agitators, mixers and reactors.

The sliding bearing tracks the complete lip seal element to the shaft movements. Since the lip and bearing are in one element, the sealing gap between the rotating shaft and the sealing lip remains virtually constant and the seal remains tight over the long term. Compensating elements such as O-ring, expansion washer or metal bellows are not required for reliable operation.

The modular seal was specifically designed for the operating conditions in the chemical, pharmaceutical, food industry as well as in water and wastewater technology. One or more sealing elements are combined in different possible arrangements to comply with the requirements.

Connections for a supply system are available. Due to the design features, a rolling bearing is not necessary but is optionally available.

The cartridge design makes the SeccoLip easy to install and safe to use. It is particularly suitable for a sliding velocity of up to 2 m/s (6 ft/s) and a pressure range of -1 to 6 barg.

The seal complies to ATEX, FDA and TA-Luft.

Watch the SeccoLip video here:


If you have questions about using any of EagleBurgmann’s products, visit their website: EagleBurgmann.  Or call +1 (713) 939 9515