Alstom Technology Limited

Rosneft Oil Company

Alexey Pavlovich Karelin

Maxim Konter

Alexander Anatolievich Khanin

Sergey Vorontsov

Alexander Bone

Ilya Vladimirovich Roslyakov

Evgeny Evgenievich Karpov

Irina Valerievna Kolesnik

Alexey Anatolievich Suchkov

Kirill Sergeevich Napolskii

The invention relates to gas analysis and to combustible gas and vapour analyzers based on a thermocatalytic operating principle. The subject of the invention is a sensor the sensitive elements of which are manufactured by planar techniques that can be easily automated. The main distinguishing feature is that a working sensitive element and a reference sensitive element are colocated in a single micron-sized structural component (a microchip) on a common substrate made of porous anodic aluminium oxide. The design of the sensitive elements provides for film-wise heat transfer from heated parts of the working and reference sensitive elements. Measuring microheaters which heat the working and reference sensitive elements up to working temperatures and provide for differentially measuring an output signal in a measuring bridge circuit are spaced apart at opposite sides of the anodic aluminium oxide substrate and are disposed on arms projecting beyond the common substrate configuration. The sensitive elements are disposed in a reaction chamber having restricted diffusion access via a calibrated orifice, and the diameter of regular pores in the microchip substrate is increased to sizes that provide for a predominantly molecular diffusion mode in the pores (100 nm or more).

Planar thermocatalytic sensor of combustable gases and vapours

A fluid flow engine (), in particular a turbo engine, has at least one guide vane row () with a plurality of guide vanes () and at least one rotor blade row () with a plurality of rotor blades (). One guide vane row () and one rotor blade row () that follows the former directly downstream with respect to a working gas flow (), together form a stage () of the fluid flow engine (). To reduce the load on the rotor blades (), the guide vanes () and the rotor blades () are coordinated at least in one stage () so that in a reference relative position between the respective guide vane () and the respective rotor blade (), there is an axial distance (B) and a circumferential distance (C) between the outgoing flow edge () of the respective guide vane () and the oncoming flow edge () of the respective rotor blade () that is measured in the axial direction and is varied along a height (H) of a gas path () running axially between the blade rows () of this stage (), said height being measured radially.

Fluid flow machine

Growing community of inventors

Moscow, Russia

Alexey Pavlovich Karelin