Apparatus for simulating airflow exciting-vibration in high-speed rotating machine and testing vibration

A high-speed rotation and vibration testing technology, applied in the field of power machinery, can solve the problems of large size, unmeasurable vibration of the air seal shaft, and inability to experimentally study the coupling relationship between the internal flow field of the air seal and the vibration of the rotor. The effect of strong versatility

Active Publication Date: 2006-02-15
SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the rotor vibration measurement in previous airflow excitation experiments can only measure the vibration of the shaft outside the air seal teeth. Since the distance between the air seal teeth is only a few millimeters, and the general displacement sensor has a large structural size, the...

Method used

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  • Apparatus for simulating airflow exciting-vibration in high-speed rotating machine and testing vibration
  • Apparatus for simulating airflow exciting-vibration in high-speed rotating machine and testing vibration
  • Apparatus for simulating airflow exciting-vibration in high-speed rotating machine and testing vibration

Examples

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Embodiment Construction

[0016] see figure 1 , a high-speed rotary machine airflow excitation simulation and vibration testing device, including a driving device, a supporting device, a rotor 1, a cylinder, an air circuit device, and a signal measuring device, and the driving device includes a DC motor 6, a speed control cabinet 32, and a gear box 4. The flexible coupling 5, the support device includes the test bench body 3, the bearing bracket 2, the bearing and the lubricating oil circuit, the air circuit device includes the air intake pipe 22, the air pipe 19, the air valve 21, the air storage tank 20, and the air compressor 19. The signal measuring device includes multiple sets of sensors and a cylinder block with an assembled steam seal structure.

[0017] The rotor 1 is connected to the flexible coupling 5 and supported on the bearing and the bearing bracket 2. The bearing bracket is connected to the test bench body 3 through anchor bolts. The flexible coupling 5 connects the gearbox 4 and the D...

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Abstract

This invention relates to an analogy and vibration measurement device of high-speed revolving mechanic air-current exciting, which is characterized by the following: a high-speed revolving mechanic air-current exciting analogy and vibration measurement device which comprises the following steps: its rotor supporting and fixing on the checking platform, the driving device activating the rotor revolving, an air-seal assembling liner in the cylinder, the air-seal elaborating on the rotor, the liner and air-seal on the rotor constituting a labyrinth air-seal; an entrance in the middle of the cylinder which injects pressure to the cylinder through the air-line device; Signal measurement device contains many groups of sensors, which fixed two sensors in the entrance, exit, and stator air-seal gear of the cylinder and the shaft bearing shelf separately; Fitting a sensor on the end of the driving generator shaft bearing shelf; the signal of the sensor connects the multi-route datum device through the wire.

Description

(1) Technical field [0001] The invention relates to a high-speed rotary machine airflow excitation simulation and vibration test device, which is used for simulating the airflow excitation phenomenon in the rotary machine and belongs to the technical field of power machinery. (2) Background technology [0002] The use of ultra-supercritical pressure is one of the important ways to improve the thermal efficiency of steam turbines. However, the improvement of the steam parameters of the steam turbine will lead to an increase in the density of the steam entering the high-pressure cylinder and an increase in the flow rate, and the sensitivity of the tangential force of the steam acting on the rotor to the dynamic and static gap, the sealing structure and the alignment between the rotor and the cylinder will increase, which will increase the effect The excitation force on the rotor makes the ultra-supercritical steam turbine more likely to generate steam flow excitation than the ...

Claims

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Application Information

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IPC IPC(8): G01M7/02
Inventor 黄瓯何阿平刘岩苏明孟光荆建平
Owner SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
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