CN205537944U

CN205537944U - Computer hydroelectric set vibrations throw detection device

Info

Publication number: CN205537944U
Application number: CN201620116152.2U
Authority: CN
Inventors: 胡东生; 裴彦明
Original assignee: Tianjin Mingshuo Technology Development Co ltd
Current assignee: Tianjin Mingshuo Technology Development Co ltd
Priority date: 2016-02-04
Filing date: 2016-02-04
Publication date: 2016-08-31
Anticipated expiration: 2026-02-04

Abstract

The utility model discloses a computer hydroelectric set vibrations throw detection device, its characterized in that: at least, include: signal acquisition module, this signal acquisition module include at least one vibrations sensor and a throw sensor, signal pre -processing module, this signal pre -processing module includes shaping circuit and AD buffer circuit, digital signal controller, the signal output module, this signal output module includes touch -sensitive screen, relay, modbus communication module, command input module, this command input module include the keyboard, every output terminal who shakes sensor and every throw sensor loops through shaping circuit and AD buffer circuit is connected with digital signal controller's signal input terminal electricity, digital signal controller's output terminal is connected with touch -sensitive screen, modbus communication module electricity respectively, digital signal controller's output terminal passes through the isolating driver circuit and is connected with the relay electricity, digital signal controller's IO terminal and keyboard electricity are connected.

Description

Microcomputer turbine-generator units vibrations throw detection device

Technical field

This utility model relates to hydrogenerator technical group field, particularly relates to a kind of microcomputer turbine-generator units vibrations pendulum Degree detection device, is mainly used in the parameter such as vibration throw of monitoring generating set, it is ensured that unit safety reliability service, is The important device that Automated water gentle guarantee unit is properly functioning improves in power plant.

Background technology

The status of equipment of turbine-generator units, utilization rate, reliability and service life are to the economic benefit of Hydropower Enterprise ' and peace Provisional capital for the national games it is critical that.Major parameter as characterizing turbine-generator units running status: frame, bearing and big The vibration of axle and throw and associated pressure pulsation value, the change procedure of its dynamic data comprises equipment state letter Breath.These data of Real Time Monitoring, are the most normal important evidence of operation conditions judging hydro-generating units. Along with Hydropower Unit single-machine capacity constantly increases, for ensureing unit and power network safety operation, unit vibration throw is carried out Status monitoring is more and more important.Turbine-generator units is as slow-speed of revolution rotating machinery, and its operation conditions accords with to a great extent Closing the universal law of rotating machinery, vibration, the monitoring of throw amount and analysis to unit operation are to ensure that unit safety is stable Run one of requisite important means.

Utility model content

The technical problems to be solved in the utility model is: provide a kind of microcomputer turbine-generator units vibrations throw detection device. This microcomputer turbine-generator units vibrations throw detection device is for monitoring the parameters such as the vibration throw of generating set, it is ensured that unit Safe and reliable operation, is that the properly functioning important device of Automated water gentle guarantee unit improves in power plant.

This utility model is adopted the technical scheme that by solving technical problem present in known technology:

A kind of microcomputer turbine-generator units vibrations throw detection device, at least includes:

Signal acquisition module, this signal acquisition module includes at least one shaking sensor and a throw sensor；

Signal pre-processing module, this signal pre-processing module includes that shaping circuit and AD isolate circuit；

Digital signal controller, the model of described digital signal controller is: dsPIC30F6012A；

Signal output module, this signal output module includes touch screen, relay, modbus communication module；

Instruction input module, this instruction input module include keyboard；Wherein:

The lead-out terminal of each shaking sensor and each throw sensor pass sequentially through shaping circuit and AD isolation circuit with The signal input terminal electrical connection of digital signal controller；The lead-out terminal of described digital signal controller respectively with touch screen, Modbus communication module electrically connects；The lead-out terminal of described digital signal controller is by isolated drive circuit and relay electricity Connect；The I/O terminal of described digital signal controller electrically connects with keyboard.

Further: the I/O terminal of described digital signal controller is also associated with RS485 communication module.

This utility model has the advantage that with good effect:

By using technique scheme, owing to the signal acquisition module in this utility model includes at least one vibration-sensing Device and a throw sensor；Therefore, during actual signal detects, shaking sensor and throw sensor are by water wheels Generating set vibration amplitude and amplitude of fluctuation are sent to pretreatment module in real time, and the signal received is entered by pretreatment module Row shaping, is then sent to digital signal controller by AD isolation circuit, and last digital signal controller will detect Signal be sent to touch screen and show；In digital signal controller, preset in advance has vibrations and the threshold value swung, when When the shock momentum detected or oscillating quantity are beyond threshold range, then digital signal controller is opened by isolated drive circuit Open or close specific relay, and then ensure the normal work of turbine-generator units.

Accompanying drawing illustrates:

Fig. 1 is the circuit block diagram of this utility model preferred embodiment；

Fig. 2 is digital signal controller (DSC) and the circuit theory diagrams of communication interface of this utility model preferred embodiment；

Fig. 3 is the circuit theory diagrams of the shaping circuit of this utility model preferred embodiment；

Fig. 4 is the circuit theory diagrams of the switching value input circuit of this utility model preferred embodiment；

Fig. 5 is the circuit theory diagrams of the switching value output circuit of this utility model preferred embodiment；

Fig. 6 is the circuit theory diagrams of the power circuit of this utility model preferred embodiment.

Detailed description of the invention

For utility model content of the present utility model, feature and effect can be further appreciated that, hereby enumerate following example, and Accompanying drawing is coordinated to describe in detail as follows:

Referring to Fig. 1, a kind of microcomputer turbine-generator units vibrations throw detects device, including:

The operation principle of this preferred embodiment is: signal acquisition module gathers vibrations parameter and the pendulum of microcomputer turbine-generator units Dynamic parameter, subsequently by the vibrations parameter collected with swing parameter and send to shaping circuit, shaping circuit is to receiving Signal is filtered shaping；Pass through to enter number after AD isolates circuit from vibrations parameter and the swing parameter of shaping circuit output Word signal controller, the vibrations parameter received and swing parameter are given touch screen and are shown by digital signal controller afterwards Showing, meanwhile, engineer can utilize keyboard or touch screen to arrange vibrations and the threshold value swung, when vibrations parameter and swing When parameter is beyond threshold range, then digital signal controller sends alarm signal, passes through isolated drive circuit to transmission simultaneously Switching value output module sends out code.And then prevent the generation of peril.

Fig. 2 to Fig. 6 is the local circuit schematic diagram of above preferred embodiment；Particularly as follows:

Refer to Fig. 3: totally No. 4 sample circuit, principle is identical, as a example by the first via.Positive/negative voltage signal enters into N1A, The precise rectification circuit of N2B composition, after becoming positive signal, after voltage follower N2A, enters with-0.5V Signal averaging After the analog signal isolating circuit of N3A, N16A composition, enter into the AD port of DSC.N1B is that positive negative signal judges Circuit, exports low and high level, judges for DSC.

Refer to Fig. 4: on-off model after light-coupled isolation, enter into DSC input port.

Refer to Fig. 5: DSC switching value output signal after light-coupled isolation, enter into relay driving chip D3, drive Dynamic chip is directly output to relay.

Fig. 6 is the circuit theory diagrams of power circuit in above preferred embodiment；

Above embodiment of the present utility model is described in detail, but described content has been only preferable reality of the present utility model Execute example, it is impossible to be considered for limiting practical range of the present utility model.All according to this utility model application range made equal Deng change and improvement etc., within all should still belonging to patent covering scope of the present utility model.

Claims

1. a microcomputer turbine-generator units vibrations throw detection device, it is characterised in that: at least include:

The lead-out terminal of each shaking sensor and each throw sensor passes sequentially through shaping circuit and AD isolation circuit electrically connects with the signal input terminal of digital signal controller；The lead-out terminal of described digital signal controller electrically connects with touch screen, modbus communication module respectively；The lead-out terminal of described digital signal controller is electrically connected with relay by isolated drive circuit；The I/O terminal of described digital signal controller electrically connects with keyboard.

Microcomputer turbine-generator units the most according to claim 1 vibrations throw detection device, it is characterised in that: the I/O terminal of described digital signal controller is also associated with RS485 communication module.