Inflatable sphere for a mechanical displacement meter prover

The inflatable sphere is used in Mechanical Displacement Meter Prover (MDMP) intended for verification and control of the metrological characteristics of flow transducers that are part of the systems for measuring the quantity and quality indicators of oil and oil products.

The inflatable sphere displaces liquid when moving along a MDMP calibrated section and actuates MDMP detectors.

The diameter of the sphere can be increased for 5%. An antifreeze swings (increases the volume) of the sphere. The material of the inflatable sphere reduces friction between its surface and pipeline walls with minimum pressure and flow.

The MDMP total pressure loss when the inflatable sphere passes through the calibrated area does not exceed 0.2 MPa.

Inflatable sphere PACKAGE

  • The sphere swing pump
  • An adapter set
  • The sphere extraction device

The Unikom-Service Ltd. (scientific and production company) has been granted the right to use the “Inflatable sphere for a mechanical displacement meter prover” utility model according to the Russian Federation patent No. 165511 dated 01.12.2015 under a non-exclusive license in the Russian Federation. The patent holders of the utility model are: Transneft PJSC, Transneft Diascan JSC, Transneft Urals JSC, Transneft Research Institute LLC.

This includes the right to use the invention under patent No. 2628392 dated 16.08.17 “A method of manufacturing spherical two-layer products from polyurethane” under a non-exclusive license in the territory of the Russian Federation. The patent holders of the invention are: Transneft PJSC, Transneft Diascan JSC, Transneft Verkhnyaya Volga JSC.

PART DIMENSIONS

ParameterValues
Nominal diameter, mm200300387455482590723736762870890990
Sphere diameter max., mm2103154064785046207587738009139341040
Weight, kg3.81221324167123138145212245320
Operating temperature, °C
from -40°С to +50°С

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