描述
一、产品概述
BENTLY 3500/22M 288055-01是Bently Nevada（现属Baker Hughes）推出的3500系列瞬态数据接口（TDI,Transient Data Interface）模块，专为旋转机械（如汽轮机、压缩机、发电机等）的振动、位移、速度等参数的瞬态数据采集与分析设计。该模块是3500监测系统的核心组件之一，支持高分辨率波形记录、频谱分析、故障特征提取等功能，适用于设备启动/停机、瞬态工况或故障发生时的动态数据捕获。
二、技术规格与功能
1.核心功能
瞬态数据采集：
实时记录设备在瞬态过程（如启动、停机、负荷变化）中的振动波形、频谱、轴心轨迹等数据。
支持触发采集（基于阈值、时间或外部事件）和连续采集（按预设时间间隔）。
高分辨率存储：
内置大容量存储器，可保存数千组波形数据（每组包含时间、频率、幅值等信息）。
支持数据压缩技术，延长存储周期。
故障诊断支持：
提供FFT频谱分析、包络解调、阶次跟踪等工具，识别不平衡、不对中、轴承故障等典型机械问题。
可与Bently Nevada System 1或3500 Monitoring Software集成，生成故障诊断报告。
通信与集成：
通过3500系列机架总线与主处理器模块（如3500/15）通信。
支持Modbus TCP/IP、OPC UA协议，可与SCADA、DCS或第三方分析软件无缝对接。
2.关键参数
参数规格
输入通道2通道（可配置为振动、位移或速度信号）
采样率最高100 kHz（每通道），支持可变采样率设置
分辨率16位ADC（模拟量输入）
动态范围±10 V（输入信号范围）
存储容量内置闪存，可存储数千组波形数据（具体容量取决于配置）
触发方式阈值触发、时间触发、外部事件触发
环境适应性工作温度：-20℃~+60℃；存储温度：-40℃~+85℃；防护等级：IP20（室内安装）
供电24 V DC（由3500系列机架统一供电）
3.机械与电气接口
机械安装：
标准19英寸机架安装，与3500系列机架兼容。
模块正面配备LED指示灯，显示运行状态（正常/采集/故障）。
电气接口：
背部采用Bently Nevada专用连接器，支持热插拔。
输入信号类型：IEPE（集成电子压电）传感器（如3300系列加速度计）、涡流位移传感器（如3300 50mm探头）。
三、典型应用场景
设备启动/停机分析：
记录汽轮机、压缩机启动过程中的振动变化，分析转子临界转速、轴承润滑状态。
瞬态故障诊断：
捕获设备突发故障（如轴承保持架损坏、齿轮点蚀）时的瞬态振动信号，定位故障源。
负荷变化监测：
跟踪发电机负荷变化时的振动趋势，优化运行参数以避免共振。
试验台测试：
用于旋转机械研发阶段的性能测试，验证设计合理性。
1.Product Overview
BENTLY 3500/22M 288055-01 is a 3500 series transient data interface(TDI)module launched by Bently Nevada(now Baker Hughes),which is designed for transient data acquisition and analysis of vibration,displacement,speed and other parameters of rotating machinery(such as turbines,compressors,generators,etc.).This module is one of the core components of the 3500 monitoring system,supporting functions such as high-resolution waveform recording,spectrum analysis,and fault feature extraction.It is suitable for dynamic data capture during equipment startup/shutdown,transient conditions or faults.
2.Technical specifications and functions
1.Core functions
Transient data acquisition:
Real-time recording of vibration waveforms,spectra,axis trajectory and other data of equipment in transient processes(such as startup,shutdown,load changes).
Supports triggered acquisition(based on thresholds,time or external events)and continuous acquisition(at preset time intervals).
High-resolution storage:
Built-in large-capacity memory can save thousands of sets of waveform data(each set contains time,frequency,amplitude and other information).
Supports data compression technology to extend storage cycle.
Fault diagnosis support:
Provides FFT spectrum analysis,envelope demodulation,order tracking and other tools to identify typical mechanical problems such as imbalance,misalignment,bearing failure,etc.
Can be integrated with Bently Nevada System 1 or 3500 Monitoring Software to generate fault diagnosis reports.
Communication and integration:
Communicate with the main processor module(such as 3500/15)through the 3500 series rack bus.
Supports Modbus TCP/IP and OPC UA protocols,and can be seamlessly connected with SCADA,DCS or third-party analysis software.
2.Key Parameters
Parameter Specification
Input Channel 2 channels(configurable as vibration,displacement or velocity signals)
Sampling rate Up to 100 kHz(per channel),supports variable sampling rate settings
Resolution 16-bit ADC(analog input)
Dynamic range±10 V(input signal range)
Storage capacity Built-in flash memory,can store thousands of sets of waveform data(specific capacity depends on configuration)
Trigger mode Threshold trigger,time trigger,external event trigger
Environmental adaptability Working temperature:-20℃~+60℃;Storage temperature:-40℃~+85℃;Protection level:IP20(indoor installation)
Power supply 24 V DC(unified power supply by 3500 series rack)
3.Mechanical and electrical interface
Mechanical installation:
Standard 19-inch rack installation,compatible with 3500 series rack.
The front of the module is equipped with an LED indicator to display the operating status(normal/acquisition/fault).
Electrical interface:
The back uses a Bently Nevada dedicated connector,which supports hot plugging.
Input signal type:IEPE(Integrated Electronic Piezoelectric)sensor(such as 3300 series accelerometer),eddy current displacement sensor(such as 3300 50mm probe).
3.Typical application scenarios
Equipment startup/shutdown analysis:
Record vibration changes during the startup of turbines and compressors,and analyze rotor critical speed and bearing lubrication status.
Transient fault diagnosis:
Capture transient vibration signals when equipment fails suddenly(such as bearing retainer damage,gear pitting),and locate the source of the fault.
Load change monitoring:
Track the vibration trend of the generator when the load changes,and optimize the operating parameters to avoid resonance.
Test bench test:
Used for performance testing in the research and development stage of rotating machinery to verify the rationality of the design.
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