CN202676203U

CN202676203U - Large-size pumping station state monitoring and diagnosing and energy efficiency management device

Info

Publication number: CN202676203U
Application number: CN 201220202333
Authority: CN
Inventors: 徐占国; 符向前
Original assignee: LIFANG TECH Co Ltd WUHAN
Current assignee: LIFANG TECH Co Ltd WUHAN
Priority date: 2012-05-08
Filing date: 2012-05-08
Publication date: 2013-01-16
Anticipated expiration: 2022-05-08

Abstract

The utility model provides a large-size pumping station state monitoring and diagnosing and energy efficiency management device. The device comprises a vibration sensor, a swing degree sensor, a pressure sensor, a rotation speed sensor, a data acquisition unit, a data acquisition workstation, a local area network and a host computer, wherein the signal output ends of the vibration sensor, the swing degree sensor, the pressure sensor, and the rotation speed sensor are connected with the input end of the data acquisition unit, the output end of the data acquisition unit is connected with the data acquisition workstation, and the data acquisition workstation is connected with the host computer by the local area network. The device facilitates to analyze the operation state of the device, predicts the possible accidents and unsafe factors, rationally performs the equipment maintenance and repair decision, changes the past scheduled maintenance and repair mode which has been used for a long term and realizes the maintenance and repair according to the equipment state, thereby reducing the operation, maintenance and repair costs, and increasing the operation efficiency.

Description

Large pumping station condition monitoring and diagnosis and energy efficiency management device

Technical field

The utility model relates to a kind of large pumping station condition monitoring and diagnosis and energy efficiency management device.

Background technology

Computer monitor system for pump station is as directly facing the control system of producing at present, aspect Condition Prediction of Equipment and crash analysis diagnostic function, still comparatively be short of, usually only the temperature of pump group and main-transformer is carried out simple trend analysis, and carry out " dispersing " by sequence of events recording (SOE) and each warning message, analyze culprit " empirical ", and fail intelligent status monitoring is carried out in pump group operation, failure prediction and crash analysis diagnosis are carried out " automatically ", fast " location; therefore seek relatively difficulty of culprit; particularly for a lot of interlocks of complexity; burst accident; even can not find real accident root; because accident treatment is not efficient, affected production and economic benefit.

Summary of the invention

The utility model provides a kind of large pumping station condition monitoring and diagnosis and energy efficiency management device, the running status quality that helps analytical equipment, the accident potential that prediction may exist and unsafe factor, reasonably carry out plant maintenance and maintenance decision, change the scheduled overhaul pattern that adopts over a long period of time, realization is overhauled by the state of equipment, thereby reduces operation expense, increases on-road efficiency.

A kind of large pumping station condition monitoring and diagnosis and energy efficiency management device, the involving vibrations sensor, the throw sensor, pressure transducer, speed probe, data acquisition unit, the data collection task station, LAN (Local Area Network) and host computer, vibration transducer is installed on the frame of water pump assembly, the throw installation of sensors is in the guide bearing position of water pump assembly, pressure transducer is installed in the spiral case place, speed probe is installed the macro-axis flange, vibration transducer, the throw sensor, pressure transducer, the signal output part of speed probe is connected with the input end of data acquisition unit, the output terminal of data acquisition unit is connected with the data collection task station, and the data collection task station is connected with host computer by LAN (Local Area Network).

Further, described host computer comprises state monitoring module, signal analyse block, fault diagnosis module, energy efficiency management module, the input end of state monitoring module is connected with LAN (Local Area Network), and the output terminal of state monitoring module is connected with signal analyse block, fault diagnosis module, energy efficiency management module respectively.

The utility model can make the maintenance of equipment have more specific aim, reduces personnel's operation maintenance and patrols and examines labour intensity; For the accident of " imprevision ", fast and accurately accident diagnosis, location and decision-making can be provided, diagnosis accidents happened root helps resume production fast within the shortest time.The utility model helps the running status quality of analytical equipment, the accident potential that prediction may exist and unsafe factor, reasonably carry out plant maintenance and maintenance decision, change the scheduled overhaul pattern that adopts over a long period of time, realization is overhauled by the state of equipment, thereby the reduction operation expense increases on-road efficiency.In addition, to improving security, the reliability of unit operation, very important meaning is arranged; The real pumping plant " unattended (few man on duty) " of realizing.

Description of drawings

Fig. 1 is the structural representation of the utility model large pumping station condition monitoring and diagnosis and energy efficiency management device.

Among the figure: 1-vibration transducer, 2-throw sensor, 3-pressure transducer, 4-speed probe, the 5-data acquisition unit, 6-data collection task station, 7-LAN (Local Area Network), 8-host computer, the 81-state monitoring module, 82-signal analyse block, 83-fault diagnosis module, 84-energy efficiency management module.

Embodiment

Below in conjunction with the accompanying drawing in the utility model, the technical scheme in the utility model is clearly and completely described.

Figure 1 shows that the structural representation of the utility model large pumping station condition monitoring and diagnosis and energy efficiency management device, described large pumping station condition monitoring and diagnosis and energy efficiency management device involving vibrations sensor 1, throw sensor 2, pressure transducer 3, speed probe 4, data acquisition unit 5, data collection task station 6, LAN (Local Area Network) 7 and host computer 8.

Guide bearing position, the pressure transducer 3 that vibration transducer 1 is installed on the frame of water pump assembly, throw sensor 2 is installed in water pump assembly is installed in the spiral case place, speed probe 4 is installed the macro-axis flanges, the signal output part of vibration transducer 1, throw sensor 2, pressure transducer 3, speed probe 4 is connected with the input end of data acquisition unit 5, the output terminal of data acquisition unit 5 is connected with data collection task station 6, and data collection task station 6 is connected with host computer 8 by LAN (Local Area Network) 7.

The utility model also comprises the database server 9 that is connected with LAN (Local Area Network) 7, is used for the storage device predictive repair message, and these predictive maintenance information comprise: 1. arrangement mode and its demonstration in tree structure of machinery and equipment in database; 2. test position sign, measurement are described and are reported to the police; 3. measurement data comprises all data that collect in the MS SQL database; 4. the spectrum analysis of device signal.

Principle of work of the present utility model: the status information of the water pump assembly that data acquisition unit 5 Real-time Collection vibration transducers 1, throw sensor 2, pressure transducer 3, speed probe 4 detect, and send the status information that gathers to data collection task station 6, data collection task station 6 sends host computer 8 to by LAN (Local Area Network) 7 after finishing the primary treatment of data, and all Data Sources and the data result of host computer 8 all are stored in data server 9.Described host computer 8 comprises state monitoring module 81, signal analyse block 82, fault diagnosis module 83, energy efficiency management module 84, the input end of state monitoring module 81 is connected with LAN (Local Area Network) 7, and the output terminal of state monitoring module 81 is connected with signal analyse block 82, fault diagnosis module 83, energy efficiency management module 84 respectively.Host computer 8 provides information service and state evaluation, energy efficiency management, maintenance decision service according to above-mentioned module for the pump group.

State monitoring module 81 is made of front end processor and analytical engine, front end processor includes 16 high speed analog signal input channels (signal needs to introduce) after optional signal adapter is converted to standard 0～10V signal, 2 rotating speed input channels and 4 switching value input channels, be mainly used in input signal is carried out hardware filtering, further level translation, real-time data acquisition, the realization of simple signal analysis and processing and necessary additional algorithm, and information and the analysis processing result that collects sent to analytical engine (PC or portable machine) by LAN (Local Area Network) and ICP/IP protocol.Analytical engine then is equipped with complete analysis software, is the core of the various functions of realization system.It, carries out corresponding data and shows, analyzes from the various data results that front end processor obtains by communication interface, and all results and curve all can show in real time, reappear, preserve and print.

Signal analyse block 82 to grasp the key factor that affects unit operation stability, discloses the essential reason of unit vibration for the data analysis that state monitoring module 81 is obtained; Simultaneously, rule of thumb and knowledge, also can analyze potential fault and reason thereof and definite trouble location.Signal analyse block includes signal analysis and sign is extracted the two large divisions, wherein signal analysis comprises time-domain analysis, frequency-domain analysis and process variable analysis, be mainly used in showing various relational graphs, include: trend map, time domain waveform, autocorrelation analysis, spectrogram, power spectrum chart, rank are than figure, the amplitude cepstrum, waterfall figure, Bode diagram, polar plot, Chart of axes track, wavelet transformation, vibration is with the change curve (vibration VS flow) of flow, vibration is with rotation speed change curve (vibration VS rotating speed), vibration is with lift change curve (vibration VS lift); The sign extraction comprises the extraction of frequency sign and the sign extraction of process variable, as the basis of fault diagnosis reasoning.The frequency sign is extracted and is comprised: (1/3～1/5) frequency division feature, fundamental frequency feature, two frequency multiplication features, frequency tripling feature, high-frequency characteristic, characteristics of low-frequency, strange frequently feature, the characteristic frequency relevant with the number of blade, 50 hertz of characteristic frequencies, 100 hertz of characteristic frequencies.The extraction of process variable sign mainly comprises: whether time domain waveform is whether sinusoidal waveform, orbit of shaft center are the precession feature, vibration of oval, rotor with the situation of change of rotating speed, vibration with the situation of change of rotating speed square, vibration with the situation of change of flow, the vibration situation of change with lift.

Fault diagnosis module 83 can be an expert system, it is take the on-line monitoring of unit as the basis, the data such as the vibration signal that obtains according to state monitoring module 81, procedure parameter, extract the sign of reflection operating states of the units, utilize these signs to diagnose the unit that breaks down, determine failure cause, position, type, character, and guide maintenance; To the unit of normal operation, can select the variation of suitable computation model prediction operating states of the units, unit is carried out the initial failure analysis.

The various parameters (comprising load, flow, rotating speed, electric parameter) that energy efficiency management module 84 is obtained according to the on-line monitoring of unit, carrying out in real time the input of pump group calculates with the output efficiency, obtain the analysis of unit Real time Efficiency, can carry out by Optimal Decision-making the efficiency optimization of unit, offer unit operation personnel reference.

Claims

1. a large pumping station condition monitoring and diagnosis and energy efficiency management device, it is characterized in that: involving vibrations sensor (1), throw sensor (2), pressure transducer (3), speed probe (4), data acquisition unit (5), data collection task station (6), LAN (Local Area Network) (7) and host computer (8), vibration transducer (1) is installed on the frame of water pump assembly, throw sensor (2) is installed in the guide bearing position of water pump assembly, pressure transducer (3) is installed in the spiral case place, speed probe (4) is installed the macro-axis flange, vibration transducer (1), throw sensor (2), pressure transducer (3), the signal output part of speed probe (4) is connected with the input end of data acquisition unit (5), the output terminal of data acquisition unit (5) is connected with data collection task station (6), and data collection task station (6) are connected with host computer (8) by LAN (Local Area Network) (7).