RU94042117A - Process of determination of inhomogeneity of temperatures field of gas flow behind nozzle during supercritical outflow - Google Patents

Abstract

FIELD: measurement technology. SUBSTANCE: realization of process of determination of inhomogeneity of temperature field of gas flow behind nozzle during supercritical outflow makes it possible to study physical phenomenon unknown in the past and may be used in various branches of industry and technology, specifically, in power engineering, in aviation, chemical industry, gas production and other branches where nozzles with supercritical outflow of gas are used. Process includes placement of rod 2 with through axial hole 3 behind nozzle exit section which one end 4 faces exit section of nozzle 1 and is matched to thermal probe 5 with through axial hole 6. Separable nozzle 1 is installed in wall 11 of chamber 12 into which gas outflows. Thermal probe 5 with part of rod 2 is entered into chamber 12 through hole 14 in other wall 15 of chamber. Tightness between wall 15 of chamber 12 and outer surface of rod 2 is provided with bellows 16. End 8 of rod 2 protruding from bellows 16 outside of chamber 12 is anchored in special device 20 which ensures movement and turning of rod 2 with thermal probe 5. Internal space of chamber 12 communicates with atmosphere. High-sensitivity thermocouple plays role of temperature pickup 10 which thermal emf is registered by instrument 22 while thermal probe scans gas flow in selected section of it during steady-state mode of outflow from nozzle 1. EFFECT: determination and study of discovered physical phenomenon, taking account of influence of mentioned phenomenon on corresponding characteristics of equipment in which mix nozzles with supercritical outflow of gas are used. 1 dwg

Claims (1)

The invention relates to a method for determining the inhomogeneity of the temperature field of a gas stream arising from supercritical outflow from a nozzle, its implementation allows us to study a previously unknown physical phenomenon, and it can be used in various fields of science and technology, in particular in the energy, aviation, chemical, gas industries and others using nozzles with supercritical gas outflow. In the method for determining the inhomogeneity of the temperature field of the gas flow behind the nozzle 1 during supercritical expiration, which consists in placing behind the outlet slice of the nozzle 1 a rod 2 with a through axial hole 3, one end 4 of which, facing the outlet cut of the nozzle 1, is connected with a thermal probe 5 with a through axial hole 6, a removable nozzle 1 is installed in the wall 11 of the chamber 12, into which the gas flows, and through the hole 14 in the other wall 15 of the chamber 12, a thermal probe 5 with a part of the rod 2 is inserted into the latter, tightness between the sleeve 15 of the chamber 12 and the outer surface of the rod 2 is provided with a bellows 16, and the other end 18 it covers the rod 2, while the end 8 of the rod 2 protruding from the bellows 16 to the outside of the chamber 12 is fixed in a special device 20, providing movement and rotation of the rod 2 with a thermal probe 5 and the internal space of the chamber 12 is in communication with the external environment, the role of the temperature sensor 10 is performed by at least a highly sensitive thermocouple, the thermoEMF of which is recorded by the device 22 when the temperature probe 5 scans the gas flow in its selected section when installed curled expiration mode from the nozzle 1. Thus, the invention allows to identify and study findings, the physical phenomenon, consider the effects of this phenomenon on the relevant characteristics of the equipment, which are used as part of the nozzle with the supercritical gas expiration.