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Instrument for measuring dimension of throat of turbine blade

A turbine blade and measuring instrument technology, applied in the field of turbine blade size measuring instrument and turbine blade throat size measuring instrument, can solve the problems of large size error of turbine blade throat, and achieve the effect of improving measurement accuracy and measurement repeatability

Inactive Publication Date: 2012-09-05
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that there is a large error in the measurement of the throat size of the turbine blade by using a steel trapezoidal inclined ruler, and then provide a measuring instrument for the throat size of the turbine blade

Method used

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  • Instrument for measuring dimension of throat of turbine blade
  • Instrument for measuring dimension of throat of turbine blade
  • Instrument for measuring dimension of throat of turbine blade

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Experimental program
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Effect test

specific Embodiment approach 1

[0010] Specific implementation mode one: combine Figure 1 to Figure 4 Describe this embodiment, the turbine blade throat dimension measuring instrument of this embodiment comprises a signal detection device, a signal processing display and a data line 8;

[0011] The signal detection device comprises a knife edge 1, a base plate 2, a measuring button 3, a displacement sensor 4, a measuring rod 5, a probe 6 and an open shell 7; the base plate 2 is installed on the open end of the open shell 7, and the base plate 2 and the open The mouth shell 7 jointly forms a chamber, the displacement sensor 4 is arranged in the chamber, and is installed on the bottom plate 2, and the measuring button 3 is installed on the outer wall of the open shell 7, and the outer wall of the bottom plate 2 is provided with a groove 2 -1, the knife edge 1 is installed in the groove 2-1, the measuring head 6 is arranged under the open casing 7, and establishes a mechanical connection with the displacement ...

specific Embodiment approach 2

[0014] Specific implementation mode two: combination figure 1 This embodiment will be described. The display screen 12 of this embodiment is a liquid crystal display. Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0015] Specific implementation mode three: combination figure 1 with figure 2 The present embodiment will be described, and the displacement sensor 4 of the present embodiment is a microscopic displacement sensor. Such an arrangement effectively reduces the geometric size of the signal detection device, and is more convenient to be used between the two-stage blades of the turbine. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses an instrument for measuring the dimension of a throat of a turbine blade, relates to the instrument for measuring the dimension of the turbine blade, and aims to solve the problem of large error in measurement of the dimension of the throat of the turbine blade by adopting a steel trapezoidal bevel. The instrument comprises a signal detection device, a signal processing display and a data line, wherein a base plate is arranged at an opening end of an opening shell; a displacement sensor is arranged on the base plate; a measurement button is arranged on an external wallof the opening shell; a knife edge is formed in a groove of the base plate; a measurement head is connected with the displacement sensor through a measurement rod; a signal processing unit and a battery pack are arranged in a closed shell; a display screen and a functional key group are embedded in the closed shell; the functional key group is positioned below the display screen; a power switch is arranged on the external wall of the closed shell and electrically connected with the battery pack; the functional key group and the display screen are electrically connected with the signal processing unit respectively; and the signal detection device and the signal processing display are connected through the data line. The instrument is applicable to measurement of the dimension of the throatof the turbine blade.

Description

technical field [0001] The invention relates to a turbine blade size measuring instrument, in particular to a turbine blade throat size measuring instrument, which belongs to the technical field of turbine blade geometry measurement. Background technique [0002] The blade is one of the main parts of the turbine, especially its air passage part determines the flow of gas passing through the turbine blade, which directly affects the product quality of the turbine machinery. The throat size of the turbine blade refers to the minimum distance from the end of the air outlet edge of the blade to the profile of the next blade. It is an important parameter in the design of the air passage, and its size determines the flow rate and velocity of the airflow between the turbine blades. For the size of the turbine throat, the existing measurement method is to use a steel trapezoidal inclined ruler for measurement. There is a scale marked on the inclined ruler. When measuring, the measu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/00
Inventor 陈刚刘剑飞王永刚郭玉波李凯叶东
Owner HARBIN INST OF TECH