| 摘要 |
FIELD: mining. ^ SUBSTANCE: device comprises cylindrical tubular body, straightening vane and windows for outlet of fluid flow, heater and heat-sensitive element, electrical circuit for generation of information signal, supply unit and recorder. Additionally device comprises two heat-sensitive resistive elements, having equal values of electrical resistances and different working surfaces of turns washed with flow of oncoming fluid and arranged as mutually perpendicular on bearing frame. Straightening vane is installed in front part of cylindrical tubular body. Heater and heat-sensitive element are installed between straightening vane and windows for outlet of fluid flow. Bearing frame is formed by at least two plates of trapezoidal shape from electric insulation and heat insulation material, and small bases of trapezoids face oncoming flow of fluid. Besides turns of one of resistive heat-sensitive elements are arranged on bearing frame perpendicularly to direction of fluid motion, of the second one - in parallel, and heat sensitive elements are connected serially into one of three branches of measurement circuit arranged as a balances DC bridge. The third heat-sensitive element is installed upstream two above-mentioned heat-sensitive elements in front part of cylindrical tubular body at the end of straightening vane, which is closer to oncoming flow of fluid. Besides heat sensitive elements are connected into bridge circuit, which consists of three parallel branches. ^ EFFECT: improved accuracy of measurements and information value due to simultaneous measurement of measurement speed and temperature, reduction of heat inertia and heat resistance. ^ 3 dwg |
