Handle type blade with three pressure sensing holes at front edge of each element stage

• Main Authors: MA HONGWEI, XIA CHENXI, XU BOWEN
• Format: Patent
• Language: Chinese; English
• Published: 08.05.2020
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The invention discloses a handle type blade with three pressure sensing holes at the front edge of each element stage. The handle type blade comprises the pressure sensing holes, a pressure guiding channel, a handle, a pressure guiding pipe connector and a low-loss bent pipe. The front edge of the blade is provided with the multiple rows of pressure sensing holes in the blade height direction, each row comprises three pressure sensing holes which are respectively distributed at a front edge point of each element stage, a pressure surface and a suction surface; and the pressure guiding channelis respectively connected with orifices of the pressure sensing holes and the pressure guiding pipe connector, and the low-loss bent pipe is adopted at the bent part. According to the handle type blade, the total pressure, static pressure, deflection angle and Mach number of airflow at an outlet of a compressor rotor in the blade height direction and at the multiple element stage positions can besimultaneously measured, a