CN111426440A

CN111426440A - Vibration fault detection system of rotary machine

Info

Publication number: CN111426440A
Application number: CN201910019200.4A
Authority: CN
Inventors: 承敏钢; 魏懿; 张能文; 何晓琳; 谢秦韬; 陈志强; 杨菲; 尤敏磊
Original assignee: Jiangsu Xdg Solutions Technology Co ltd
Current assignee: Jiangsu Xdg Solutions Technology Co ltd
Priority date: 2019-01-09
Filing date: 2019-01-09
Publication date: 2020-07-17

Abstract

The invention relates to the related technical field of rotary machines, in particular to a vibration fault detection system of a rotary machine. The data acquisition module is connected with the A/D conversion module, the signal conditioning and communication module, the power circuit, the reset circuit, the single chip microcomputer and the PC end in sequence through electrical property. A vibration failure detection system for a rotary machine, capable of monitoring and diagnosing a failure of the rotary machine, having high accuracy and low power consumption, and capable of monitoring and diagnosing a failure of the rotary machine by analyzing a vibration pattern of the rotary machine.

Description

Vibration fault detection system of rotary machine

Technical Field

The invention relates to the related technical field of rotary machines, in particular to a vibration fault detection system of a rotary machine.

Background

A rotary machine is a machine whose main function is completed by a rotary motion, and particularly a machine whose main component rotates at a high rotation speed. Rotary machines cover important engineering fields such as power, electric power, chemical engineering, metallurgy, mechanical manufacturing and the like. The rotating speed of the rotating machinery is high, and the requirements on fault diagnosis technology are particularly urgent, such as turbonators, compressors, fans, large-scale rolling mills and the like. Rotary machines are developing towards large scale, high speed and automation, which puts stringent demands on improving safety and reliability and on developing advanced state monitoring and fault diagnosis techniques. And further forms a vibration monitoring and fault diagnosis technology of the rotary machine which is widely applied at home and abroad in recent years. However, the amplitude and phase of the vibration may vary greatly for different rotor systems for the same fault; the same fault occurs in different parts, and vibration signals may be greatly different; the same fault arranges measuring points at different positions, and the obtained vibration signals have larger difference. Therefore, a vibration fault detection system for a rotary machine is needed to monitor and diagnose a fault in the rotary machine.

Disclosure of Invention

In order to solve the above-described problems, the present invention provides a vibration failure detection system for a rotary machine, which is capable of monitoring and failure diagnosis of rotary machine vibration, has high accuracy and low power consumption, and is capable of monitoring and failure diagnosis of rotary machine vibration by analyzing a rotary machine vibration pattern.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the utility model provides a rotary machine's vibration fault detection system, mainly includes data acquisition module, AD conversion module, signal conditioning and communication module, power supply circuit, reset circuit, singlechip and PC end, data acquisition module is connected with AD conversion module, signal conditioning and communication module, power supply circuit, reset circuit, singlechip and PC end through the electrical property in proper order.

The invention further improves, the said data acquisition module includes the electric eddy current sensor, integral amplifier circuit and signal filtering, and the filter adopts ADS7408 model, the vibration signal that the electric eddy current sensor outputs is generally between 4-20mA, through the signal amplifier circuit, output to A/D switching circuit, finish the conversion from analog signal to digital signal by A/D, and then input the signal after the conversion to the one-chip computer by A/D, therefore the one-chip computer communicates with PC end, realize the acquisition of the data.

The invention further improves that the converter of the A/D conversion module adopts ADS7408 type.

The invention is further improved, and the single chip microcomputer adopts an ADS7408 model.

The invention has the beneficial effects that: a vibration failure detection system for a rotary machine, capable of monitoring and diagnosing a failure of the rotary machine, having high accuracy and low power consumption, and capable of monitoring and diagnosing a failure of the rotary machine by analyzing a vibration pattern of the rotary machine.

Drawings

FIG. 1 is a schematic flow chart of the system of the present invention;

in the figure, a 1-data acquisition module, a 2-A/D conversion module, a 3-signal conditioning and communication module, a 4-power circuit, a 5-reset circuit, a 6-single chip microcomputer and a 7-PC terminal are arranged.

Detailed Description

In order to enhance the understanding of the present invention, the present invention will be described in further detail with reference to the following examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.

In an embodiment, as shown in fig. 1, a vibration fault detection system for a rotary machine mainly includes a data acquisition module, an a/D conversion module, a signal conditioning and communication module, a power circuit, a reset circuit, a single chip microcomputer, and a PC terminal, where the data acquisition module is electrically connected to the a/D conversion module, the signal conditioning and communication module, the power circuit, the reset circuit, the single chip microcomputer, and the PC terminal in sequence.

In this embodiment, the data acquisition module includes an eddy current sensor, an integrating amplifier circuit and a signal filter, the filter is of an ADS7408 type, a vibration signal output by the eddy current sensor is generally between 4 and 20mA, the vibration signal is output to the a/D conversion circuit after passing through the signal amplifier circuit, the conversion from an analog signal to a digital signal is completed by the a/D, and the converted signal is input to the single chip microcomputer by the a/D, so that the single chip microcomputer communicates with the PC terminal to realize data acquisition.

In this embodiment, the converter of the a/D conversion module is of an ADS7408 type.

In this embodiment, the single chip microcomputer is of an ADS7408 type.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a rotary machine's vibration fault detection system which characterized in that mainly includes data acquisition module, AD conversion module, signal conditioning and communication module, power supply circuit, reset circuit, singlechip and PC end, data acquisition module is connected with AD conversion module, signal conditioning and communication module, power supply circuit, reset circuit, singlechip and PC end through the electrical property in proper order.

2. The vibration fault detection system of a rotary machine according to claim 1, wherein the data acquisition module comprises an eddy current sensor, an integrating and amplifying circuit and a signal filter, the filter is of an ADS7408 type, a vibration signal output by the eddy current sensor is generally 4-20mA, the vibration signal is output to the A/D conversion circuit after passing through the signal amplifying circuit, the A/D conversion is performed on an analog signal to a digital signal, and the A/D is used for inputting the converted signal to the single chip microcomputer, so that the single chip microcomputer communicates with the PC terminal to acquire data.

3. The vibration fault detection system of a rotary machine of claim 1, wherein the converter of the a/D conversion module is of the ADS7408 type.

4. The vibration fault detection system of a rotary machine according to claim 1, wherein the single chip microcomputer is of an ADS7408 type.