Effect of Load Conditions on the Retardation Force of Stator Vanes’ Regulating Mechanism

doi:10.12068/j.issn.1005-3026.2025.20230280

Abstract

Abstract:

In order to explore the effect of temperature and load conditions on the retardation force of stator vanes’ regulating mechanism from an experimental level， a single-level regulating mechanism test system is built considering the design criteria of the mechanism experiment based on motion functions and load simulation at the schematic-level. A method for testing the force of the operation mechanism using a unidirectional tension force sensor is proposed. Tests are conducted on the strain of the pull rod under different axial force loads and environmental temperatures， as well as the force on the push rod. The results show that under individual effects of axial force load and temperature， the change in retardation force is closely related to axial force load， and the effect of axial force load on retardation force is larger than that of temperature； when axial force is combined with temperature， the effect of retardation force shows a coupled trend， and the influence of temperature on retardation force cannot be ignored during the mechanism’s return motion.

Key words: stator vanes’ regulating mechanism, retardation force, load condition, experimental system, force test

CLC Number:

V 233.95

Jing CHANG, Zhong LUO, Chao PANG, Hong-yu LI. Effect of Load Conditions on the Retardation Force of Stator Vanes’ Regulating Mechanism[J]. Journal of Northeastern University(Natural Science), 2025, 46(3): 97-105.

Figures/Tables 15

Table 1 Simplified simulation of aerodynamic load and temperature of blade

载荷类型	载荷参数	稳态工况	简化工况	试验工况
气动载荷	力示意
	力方向
	力幅值	—	F₁=500 N F₂=200 N M₁=1.5 N·m	F₁=0~500 N
气热载荷	温度幅值	第0级250 ℃ 第1级310 ℃ 第2级360 ℃ 第3级400 ℃	第0级250 ℃ 第1级310 ℃ 第2级360 ℃ 第3级400 ℃	常温~200 ℃可控

Fig.1 Experimental setup

Table 2 Parameters of sensor

非线性0.03%~0.1%全量程

滞后0.03%~0.1%全量程

不重复性0.03%~0.1%全量程

Fig.2 Verification results of the motion function test

Table 3 Parameters of the strain gauge

应变计类别

标称电阻值/Ω

应变计

栅长/mm

± 0.0

Table 3 Parameters of the strain gauge

应变计类别

标称电阻值/Ω

应变计

栅长/mm

灵敏系数/%

箔式应变片

120

2.1

± 0.0

Fig.3 Arrangement of the strain gauges

Fig.4 Strain and retardation force of the pull rod

Table 4 Test arrangement

试验对象	载荷/N	温度条件	测试内容
单级调节机构试验系统	20, 50, 70, 100	常温、 150 ℃	拉杆应变，作动筒拉压力

Fig.5 Retardation force test curves

Fig.6 Movement process of pull rod

Fig.7 Retardation force under different axial force conditions

Fig.8 Results of the ratio of retardation force to axial force

Fig.9 Strain curves

Fig.10 Effect of temperature on retardation force

Fig.11 Retardation force under force, temperature and their coupling effect

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