Blade rotating speed measuring device

A technology for measuring device and blade speed, which is applied in the direction of measuring device, fluid speed measurement, speed/acceleration/impact measurement, etc. It can solve problems such as difficult guarantee of strength, distortion of speed measurement, and influence on measurement accuracy, so as to achieve fast installation and reduce The effect of weight and rotational speed

Active Publication Date: 2014-04-23
CHINA NORTH ENGINE INST TIANJIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the measurement of the blade speed, the smaller the diameter of the shaft where the blade is installed, the better, so that the error caused by the weight of the shaft itself will be reduced, but the diameter of the shaft where the blade

Method used

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  • Blade rotating speed measuring device

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Example Embodiment

[0011] Such as figure 1 As shown, the inside of the stepped sleeve 1 is a through hole with a diameter of 5mm and a length of 192.5mm, and the two ends are respectively stepped holes with different diameters. One end of the stepped sleeve 1 is provided with a diameter of 16mm, a height of 5mm and M19X1.5mm. A stepped hole with a height of 10mm, and a stepped hole with a diameter of 16mm, a height of 14mm, a diameter of 48mm, and a height of 16mm on the other end; shaft 4 is set to a stepped shaft with a diameter of 10mm, a length of 38mm, a diameter of 5mm, and a length of 222mm; shaft 4 Passing through the through hole of the step sleeve 1, the first bearing bearing 6 is installed on the shaft 4 with a diameter of 5mm, and then it is sleeved in a hole with a diameter of 16mm and a height of 5mm. One side of the first bearing bearing 6 is tight. Sticking to the stepped surface of the shaft 4, the nut 5 matches the M19X1.5mm hole on the step sleeve 1 to connect the shaft 4 t...

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Abstract

The invention relates to a blade rotating speed measuring device. The blade rotating speed measuring device comprises a stepped sleeve (1), blades (2), a bolt (3), a shaft (4), a nut (5), a first bearing (6), a second bearing (7), a fixation fluted disc (8), a thrust washer (9), a rotating speed sensor (10), a nut (11), a seal disc (12) and a screw(13). The inside portion of the stepped sleeve (1) is provided with a through hole. The shaft (4) runs through the through hole in the stepped sleeve (1). One end of the shaft (4) is connected with the blades (2) through the bolt (3). The stepped hole in one end of the stepped sleeve (1) is provided with the second bearing (7) and the fixation fluted disc (8) from inside to outside, and the stepped hole in the other end of the stepped sleeve (1) is provided with the first bearing (6) and the nut (5) from inside to outside. The stepped sleeve (1) is locked with the shaft (4) through the thrust washer (9) and the nut (11). The rotating speed sensor (10) is arranged on one side of the stepped sleeve (1) and in contact with the fixation fluted disc (8). The blade rotating speed measuring device of the invention can be used to ensure that the rotation shaft does not shaken and in stable condition during measurement so as to realize the accurate measurement of the rotating speed.

Description

technical field [0001] The invention belongs to the field of rotating speed measuring equipment, and in particular relates to a blade rotating speed measuring device. Background technique [0002] The original blade anemometer measurement device is to fix a dumbbell-shaped blade with screws on the top of a Φ8mm shaft with a length of 254mm, and install the bottom on an oil-free bearing. Output, get the value required by the measurer. For the measurement of the blade speed, the smaller the diameter of the shaft where the blade is installed, the better, so that the error caused by the weight of the shaft itself will be reduced, but the diameter of the shaft where the blade is installed is small and long, and the strength is difficult to guarantee, which can easily cause the top When the vane is installed, it vibrates when rotating, which causes the distortion of the rotational speed measurement, thus affecting the measurement accuracy. [0003] In order to ensure that the m...

Claims

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Application Information

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IPC IPC(8): G01P5/06
Inventor 姜莉岳文忠路朝阳田树桐辛建英
Owner CHINA NORTH ENGINE INST TIANJIN
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