Last edited by Felrajas
Friday, August 7, 2020 | History

2 edition of Design of a pump wear ring labyrinth seal found in the catalog.

Design of a pump wear ring labyrinth seal

Design of a pump wear ring labyrinth seal

final report

  • 245 Want to read
  • 27 Currently reading

Published by Turbomachinery Laboratories, Texas A&M University, Mechanical Engineering Dept., National Aeronautics and Space Administration, National Technical Information Service, distributor in College Station, Tex, [Washington, DC, Springfield, Va .
Written in English

    Subjects:
  • Applications programs (Computers),
  • Computational fluid dynamics.,
  • Design analysis.,
  • Labyrinth seals.,
  • Leakage.,
  • Structural design criteria.

  • Edition Notes

    StatementDavid L. Rhode ... [et al.].
    SeriesNASA contractor report -- NASA CR-179161.
    ContributionsRhode, D. L., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15407507M

    @article{osti_, title = {Analytical and experimental investigation of rubbing interaction in labyrinth seals for a liquid hydrogen fuel pump. Final report}, author = {Dolan, F.X. and Kennedy, F.E. and Schulson, E.M.}, abstractNote = {Cracking of the titanium knife edges on the labyrinth seals of the liquid hydrogen fuel pump in the Space Shuttle main engine is considered. A discussion of the present state-of-the-art of labyrinth seal theory and design from a thermodynamic and fluid mechanic viewpoint. as pump impeller wear .

    Design / Operating principle. The principle of operation of single-stage Roots pumps corresponds to the operating principle of multi-stage pumps as described in Chapter In the Roots vacuum pump, two synchronously counter-rotating rotors (4) rotate contactlessly in a housing (Figure ).The rotors have a figure-eight configuration and are separated from one . of Ownership due to their robust design, compared to the Universal (AA) models and Universal Seal (A) models. The API Design Standard: Full Compliance or With Exceptions •XPD Series (models AX/AX) Steel pumps with 4-bolt mount API cartridge seals and NO exceptions to the API standard. Universal Series.

      Session #2: Mechanical Seal Fundamentals of the Pump & Seal Reliability Webinar. Stay in Touch: Website: Linke. • Compression elements do not wear or require periodic replacement • Oil filter elements and seal gas filter elements are easily replaced online • Bearings designed for extended life • % oil-free per ISO certification • Prevent contamination of system • Meet strict downstream requirements • Centrifugal compressors are proven.


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Design of a pump wear ring labyrinth seal Download PDF EPUB FB2

The labyrinth seal is a controlled leakage seal used to prevent high-pressure gas leaking out of the case to the atmosphere and minimizes internal leakage.

The labyrinth seal consists of one or more sharp-edged ridges machined on the outside diameter of a rotating shaft or on the inside diameter of a sealing passage as shown in Fig.

Get this from a library. Design of a pump wear ring labyrinth seal: final report. [D L Rhode; United States. National Aeronautics and Space Administration.;]. This article will explain what a mechanical seal is and the key design features that make them work.

Basics of fluid pump sealing. A mechanical seal is simply a method of containing fluid within a vessel (typically pumps, mixers, etc.) where a rotating shaft passes through a stationary housing or occasionally, where the housing rotates around the shaft. A labyrinth seal is a type of mechanical seal that provides a tortuous path to help prevent leakage.

An example of such a seal is sometimes found within an axle's bearing to help prevent the leakage of the oil lubricating the bearing.

A labyrinth seal may be composed of many grooves that press tightly inside another axle, or inside a hole, so that the fluid has to pass through a long. Retaining Set Screw, Impeller Wear Ring (Not Illus-trated) SS 1 Labyrinth Seal, Outboard (VBX) Bronze/Viton 2 Labyrinth Seal, Inboard (Inpro VBX) Bronze/Viton 1 Casing Gasket, Parting (Not Illustrated) 1/32* Non-Asbestos 4 Glands Studs SS 4 Hex Nuts SS 2 Gasket, End Cover to Bearing Housing Kraft Paper.

TECHNICAL DESCRIPTION WATER INJECTION PUMPS Water injection pump system back-to-back also balance the thrust forces in the pump, by the design of impeller wear-rings.

Duplex lube oil filters Auxiliary lube oil pump Labyrinth Sleeve Mechanical seal Wear ring Impeller Suction cover. 7 0 File Size: KB. and long wear life.

The front pump out vanes reduce circulation. The Drylock® seal is a modular cartridge design, simplifying main-tenance. Slurry performance has been improved by adding Wilfley’s new, patented Barrier Ring. Optional expeller drain and casing drain (not shown) available for both operational and safety purpose.

Mechanical Seals,Water Pump,Centrifugal Pump, Find Complete Details about Mechanical Seals,Water Pump,Centrifugal Pump,Oil Seal,Roller Bearing Oil Seal,Pump Mechanical Seals from Seals Supplier or Manufacturer-Rugao Yaou Import And Export Trade Co., Ltd.

For a more complete description of dry gas seal principles of operation, see Shah (). Inboard of the dry gas seal is an inner labyrinth seal, which separates the process gas from the gas seal. Outboard of the dry gas seal is a barrier seal, which separates the gas seal from the compressor shaft bearings (Fig.

In addition to providing a nearly perfect seal with negligible wear or friction, they are tolerant of shaft runout. They can be used at speeds up torpm, temperatures up to F, and pressures of 7 psi/stage.

Pump efficiency is affected by numerous factors and impeller is the main factor among those. The factors affecting pump efficiency is listed as surface finish of internal surfaces, wear ring tolerance, mechanical losses, impeller diameter, viscosity.

seal. This is the primary type of seal described in the SKF Seal handbook. In many designs, the primary sealing lip is held in position by a garter spring. Generally, spring-loaded lips are for retaining oil and non-spring-loaded are used for low speed grease retention or excluding contaminants.

This seal has a simple L-shaped shell with the. Semi Open impeller design that reduces the amount of solids that enter the stuffing box extending the life of the mechanical seal or packing and the life of the stuffing box. (Available on 5x4x14 – 10x8x14 models) Labyrinth seals to offer maximum bearing protection from external contamination.

Labyrinth seals rotate with the shaft eliminatingFile Size: 2MB. Every other leak path within the mechanical seal is blocked with the use off a gasket, o-ring, wedge (Rubber, PTFE or Flexible Graphite). The other key aspect of a mechanical pump seal is how to maintain the seal.

Springs (single or multiple), a metal bellows or just compressed elastomers are used to provide the needed energy to keep pressing the seal faces together.

mechanical seal and is defined as In practice k values are selected between and With a lower k value, the safety against thermal overload will increase, but the mechanical seal may also lift off more easily.

Unlike an O-Ring seal, the hydraulic diameter of a bellows seal is not a fixed geometric value. It is also influenced by. seal design. The dynamic sealing surface was incorporated into the seal assembly.

Doing this created a series of lips with horizontal as well as vertical contact points. This integral sys-tem was a technological advance that allowed manufac-turers to take responsibility for the entire sealing system and not just the seal. In order to explore the influence of different wear-ring sizes on the performance and flow characteristic, both numerical simulation and performance test are conducted in a.

Although mechanical seals had been around for many decades, by industry had converted only a small percentage of pumps from packing to mechanical seals. This is due to various reasons: • To install a seal, the pump would have to be taken off-line and disassembled.

• Packing could be installed quickly, or an extra ring. Standard Labyrinth Oil Seals Prevent contamination of lubricant solids from entering seal chamber. Goulds 9. of pump design experience to ensure it would have unmatched mechanical reliability.

Today, installations around the world attest to its remarkable Size: 2MB. Seals have a crucial impact on system performance. Life and reliability of what is often considered a simple component can make all the difference to your product and operations. With SKF, you get support for all the key aspects of your sealing system.

For the last + years, CR Seals has been setting performance and service life standards for. Low deflection (less than in.) at seal faces for longer seal and bearing life. Provide year average bearing life within design operational range.

Prevent primary cause of premature bearing failure—lubricant contamination. Also prevent loss of oil. Bearings run cooler, last longer. Rigid design reduces effects of pipe loads on pump/motor.related to the chronological developments in annular pressure seal analyses as well as experimental results validating the model predictions.

This lecture content material does not include a discussion on labyrinth seals or deep groove seals for liquid pump applications. Labyrinth seals are more common in centrifugal Size: KB.In some rotating labyrinth seal designs—the ones similar to figure 3—the O-ring is expected to lift off radially when the shaft is rotating.

But, the same O-ring is also expected to seal the small gap between rotating and stationary component whenever the shaft stops turning.