阅读说明：本技术 一种转子实验系统及其不平衡量测试实验的方法 (Rotor experiment system and unbalance testing experiment method thereof ) 是由 汪爱明 于 2019-10-29 设计创作，主要内容包括：本发明公开了一种转子实验系统及其不平衡量测试实验的方法,涉及机械故障模拟实验技术领域。转子实验系统包括轴承、转轴、转盘、配置螺杆、联轴器、电动机、键相传感器、电涡流位移传感器、基础、电动机驱动器、电源、信号调理板、数据采集卡和计算机。使用转子实验系统进行转子不平衡辨识测试实验的方法能够测量转子旋转速度以及不同旋转速度下转子初始不平衡响应和预设系列不平衡量引起的不平衡响应,为识别转子不平衡量提供全面数据。本发明模拟不同转盘偏心、不同旋转速度下的旋转机械转子不平衡故障,检测其导致的故障信号,具有成本低、易实施的特点。(The invention discloses a rotor experiment system and an unbalance testing experiment method thereof, and relates to the technical field of mechanical fault simulation experiments. The rotor experiment system comprises a bearing, a rotating shaft, a turntable, a configuration screw, a coupler, a motor, a key phase sensor, an eddy current displacement sensor, a foundation, a motor driver, a power supply, a signal conditioning board, a data acquisition card and a computer. The method for carrying out the rotor unbalance identification test by using the rotor experiment system can measure the rotor rotation speed, the initial unbalance response of the rotor at different rotation speeds and the unbalance response caused by the preset series of unbalance, and provides comprehensive data for identifying the unbalance of the rotor. The invention simulates the unbalance faults of the rotor of the rotating machine under different eccentricity of the rotary table and different rotating speeds, detects the fault signals caused by the unbalance faults, and has the characteristics of low cost and easy implementation.)

1. A rotor experiment system is characterized in that: the device comprises a bearing A (1), a bearing B (2), a rotating shaft (3), a turntable (4), a balance weight screw (5), a coupler (6), a motor (7), a key phase sensor (8), an eddy current displacement sensor A (9), an eddy current displacement sensor B (10), an eddy current displacement sensor C (11), an eddy current displacement sensor D (12), a base (13), a motor driver (14), a power supply (15), a signal conditioning board (16), a data acquisition card (17) and a computer (18);

the base (13) is connected with the bearing A (1), the base (13) is connected with the bearing B (2), the bearing A (1) is connected with the rotating shaft (3), the bearing B (2) is connected with the rotating shaft (3), the rotating shaft (3) is connected with the rotating disc (4), the rotating shaft (3) is connected with the coupling (6), the coupling (6) is connected with the motor (7), the motor (7) is connected with the motor driver (14), and the rotating disc (4) is connected with the counterweight screw (5);

the key phase sensor (8) is connected with a signal conditioning board (16), the eddy current displacement sensor A (9) is connected with the signal conditioning board (16), the eddy current displacement sensor B (10) is connected with the signal conditioning board (16), the eddy current displacement sensor C (11) is connected with the signal conditioning board (16), the eddy current displacement sensor D (12) is connected with the signal conditioning board (16), the signal conditioning board (16) is connected with a data acquisition card (17), and the data acquisition card (17) is connected with a computer (18);

the power supply (15) is connected with the motor driver (14), the power supply (15) is connected with the signal conditioning board (16), and the power supply (15) is connected with the computer (18).

2. An experimental method for rotor unbalance amount test using the rotor experimental system as claimed in claim 1, characterized by comprising the steps of:

A. turning on a power supply (15) and adjusting the motor (7) to a certain rotation speed by using a motor driver (14);

B. opening a computer (18), and acquiring and storing 1 path of pulse signals and 4 paths of unbalanced response signals output by a key phase sensor (8), an eddy current displacement sensor A (9), an eddy current displacement sensor B (10), an eddy current displacement sensor C (11) and an eddy current displacement sensor D (12);

C. turning off the power supply (15), and installing a balance weight screw rod (5) at a certain set position of the turntable (4);

D. turning on a power supply (15), turning on a computer (18), and acquiring and storing 1 path of pulse signals and 4 paths of unbalanced response signals output by a key phase sensor (8), an eddy current displacement sensor A (9), an eddy current displacement sensor B (10), an eddy current displacement sensor C (11) and an eddy current displacement sensor D (12);

E. turning off the power supply (15), and changing the installation position of the counterweight screw rod (5) on the turntable (4);

F. d, repeating the steps D to E until the mounting positions of the preset balance weight screw rods (5) on the rotary disc (4) are tested;

E. regulating the motor (7) to another rotating speed by using a motor driver (14), and repeating the steps B-F;

G. and analyzing the measured signals to obtain the size and the position of the unbalance amount of the rotating disc (4) caused by the balance weight screw (5), and comparing the size and the position with a set value.

Technical Field

The invention belongs to the technical field of mechanical fault simulation experiments, and particularly provides a rotor experiment system and an unbalance testing experiment method thereof.

Background

Large rotary machines, such as main mine fans, main mine drainage pumps, turbo-generators, turbo-compressors, etc., are widely used in the industrial fields of coal, electric power, etc., and play an important role. The rotor system is a core component of a rotating machine, and the problem of secondary unbalance inevitably occurs due to the problems of installation errors, abrasion, thermal deformation, medium adhesion and the like generated in the working process in the installation, operation, maintenance and other processes of the original rotor with good balance in a laboratory. The unbalance of the rotor is a main factor which causes severe vibration of the rotating machinery, accelerates the abrasion of parts, reduces the working efficiency and even causes severe accidents of machine halt, production halt and machine damage and people death. The identification of the amount of rotor unbalance is critical and has not been solved well.

Large-scale rotating machinery is usually the key equipment of continuous operation in production, predetermines unbalance on this type of equipment, builds test system, and the manual many times rises to shut down, and the unbalance response that the direct extraction rotor unbalance leads to, experimental study unbalance amount identification problem is very difficult, neither economical nor practical moreover.

Disclosure of Invention

Aiming at the problems, the invention provides a rotor experiment system and an unbalance testing experiment method thereof, which are used for simulating the unbalance faults of the rotor of the rotating machine under different rotating speeds and different rotating eccentricities of a turntable and detecting fault signals caused by the unbalance faults, and have the characteristics of low cost and easiness in implementation.

The technical scheme of the invention is as follows:

the rotor experiment system comprises a bearing A, a bearing B, a rotating shaft, a turntable, a counterweight screw, a coupler, a motor, a key phase sensor, an eddy current displacement sensor A, an eddy current displacement sensor B, an eddy current displacement sensor C, an eddy current displacement sensor D, a base, a motor driver, a power supply, a signal conditioning board, a data acquisition card and a computer;

the base is connected with the bearing A, the base is connected with the bearing B, the bearing A is connected with the rotating shaft, the bearing B is connected with the rotating shaft, the rotating shaft is connected with the rotating disc, the rotating shaft is connected with the coupler, the coupler is connected with the motor, the motor is connected with the motor driver, and the rotating disc is connected with the counterweight screw rod);

the key phase sensor is connected with the signal conditioning board, the eddy current displacement sensor A is connected with the signal conditioning board, the eddy current displacement sensor B is connected with the signal conditioning board, the eddy current displacement sensor C is connected with the signal conditioning board, the eddy current displacement sensor D is connected with the signal conditioning board, the signal conditioning board is connected with the data acquisition card, and the data acquisition card is connected with the computer;

the power supply is connected with the motor driver, the signal conditioning board and the computer.

The method for carrying out the rotor unbalance testing experiment by using the rotor experiment system comprises the following steps:

A. turning on a power supply, and adjusting the motor to a certain rotating speed by using a motor driver;

B. opening a computer, and acquiring and storing 1 path of pulse signals and 4 paths of unbalanced response signals output by a key phase sensor, an eddy current displacement sensor A, an eddy current displacement sensor B, an eddy current displacement sensor C and an eddy current displacement sensor D;

C. turning off a power supply, and installing a balance weight screw at a certain set position of the turntable;

D. turning on a power supply, turning on a computer, and acquiring and storing 1 path of pulse signals and 4 paths of unbalanced response signals output by a key phase sensor, an eddy current displacement sensor A, an eddy current displacement sensor B, an eddy current displacement sensor C and an eddy current displacement sensor D;

E. turning off the power supply, and changing the mounting position of the counterweight screw rod on the turntable;

F. d, repeating the steps D to E until the mounting positions of the preset balance weight screws on the turntable are tested;

E. regulating the motor to another rotating speed by using a motor driver, and repeating the steps B-F;

G. and analyzing the measured signal to obtain the size and position of the unbalance amount of the turntable caused by the balance weight screw rod, and comparing the size and position with a set value.

The invention has the beneficial effects that:

the invention simulates the unbalance faults of the rotor of the rotating machine under different eccentricity of the rotary table and different rotating speeds, detects the fault signals caused by the unbalance faults, and has the characteristics of low cost and easy implementation.

The invention is described in further detail below with reference to the following figures and detailed description:

description of the drawings:

FIG. 1 is a schematic diagram of a rotor experiment system.

Fig. 2 is a flow chart of a rotor unbalance testing experiment.

In fig. 1: 1. the device comprises bearings A, 2, bearings B, 3, a rotating shaft, 4, a rotating disc, 5, a balance weight screw rod, 6, a coupler, 7, a motor, 8, a key phase sensor, 9, eddy current displacement sensors A and 10, eddy current displacement sensors B and 11, eddy current displacement sensors C and 12, eddy current displacement sensors D and 13, a base, 14, a motor driver, 15, a power supply, 16, a signal conditioning board, 17, a data acquisition card, 18 and a computer.

The specific implementation mode is as follows:

as can be seen from fig. 1, the rotor experiment system includes: the device comprises a bearing A (1), a bearing B (2), a rotating shaft (3), a rotating disc (4), a balance weight screw (5), a coupler (6), a motor (7), a key phase sensor (8), an eddy current displacement sensor A (9), an eddy current displacement sensor B (10), an eddy current displacement sensor C (11), an eddy current displacement sensor D (12), a base (13), a motor driver (14), a power supply (15), a signal conditioning board (16), a data acquisition card (17) and a computer (18);

the base (13) is connected with the bearing A (1), the base (13) is connected with the bearing B (2), the bearing A (1) is connected with the rotating shaft (3), the bearing B (2) is connected with the rotating shaft (3), the rotating shaft (3) is connected with the rotating disc (4), the rotating shaft (3) is connected with the coupling (6), the coupling (6) is connected with the motor (7), the motor (7) is connected with the motor driver (14), and the rotating disc (4) is connected with the counterweight screw rod (5);

the key phase sensor (8) is connected with a signal conditioning board (16), the eddy current displacement sensor A (9) is connected with the signal conditioning board (16), the eddy current displacement sensor B (10) is connected with the signal conditioning board (16), the eddy current displacement sensor C (11) is connected with the signal conditioning board (16), the eddy current displacement sensor D (12) is connected with the signal conditioning board (16), the signal conditioning board (16) is connected with a data acquisition card (17), and the data acquisition card (17) is connected with a computer (18);

the power supply (15) is connected with the motor driver (14), the power supply (15) is connected with the signal conditioning board (16), and the power supply (15) is connected with the computer (18).

As can be seen from fig. 2, the method for performing the rotor unbalance testing experiment by using the rotor experiment system is characterized by comprising the following steps:

A. turning on a power supply (15) and adjusting the motor (7) to a certain rotation speed by using a motor driver (14);

B. opening a computer (18), and acquiring and storing 1 path of pulse signals and 4 paths of unbalanced response signals output by a key phase sensor (8), an eddy current displacement sensor A (9), an eddy current displacement sensor B (10), an eddy current displacement sensor C (11) and an eddy current displacement sensor D (12);

C. turning off the power supply (15), and installing a balance weight screw rod (5) at a certain set position of the turntable (4);

D. turning on a power supply (15), turning on a computer (18), and acquiring and storing 1 path of pulse signals and 4 paths of unbalanced response signals output by a key phase sensor (8), an eddy current displacement sensor A (9), an eddy current displacement sensor B (10), an eddy current displacement sensor C (11) and an eddy current displacement sensor D (12);

E. turning off the power supply (15), and changing the installation position of the counterweight screw rod (5) on the turntable (4);

F. d, repeating the steps D to E until the mounting positions of the preset balance weight screw rods (5) on the rotary disc (4) are tested;

E. regulating the motor (7) to another rotating speed by using a motor driver (14), and repeating the steps B-F;

G. and analyzing the measured signals to obtain the size and the position of the unbalance amount of the rotating disc (4) caused by the balance weight screw (5), and comparing the size and the position with a set value.

It should be noted that the above-mentioned embodiment examples are used to further illustrate the present invention, and the embodiment examples should not be construed as limiting the scope of the present invention.