CN205392630U

CN205392630U - Detection apparatus for ball mill carries coal volume

Info

Publication number: CN205392630U
Application number: CN201620156798.3U
Authority: CN
Inventors: 白焰; 陈祺
Original assignee: North China Electric Power University
Current assignee: North China Electric Power University
Priority date: 2016-03-01
Filing date: 2016-03-01
Publication date: 2016-07-27
Anticipated expiration: 2026-03-01

Abstract

The utility model belongs to measure the testing arrangement field, especially relate to a detection apparatus for ball mill carries coal volume. A serial communication port, the device includes that the shell is nonmetal hollow sphere, the even outside that covers at the shell of a plurality of film pressure sensor, the internal layout of shell has arduino circuit board, a bluetooth modul, FSR analog circuit signal plate and specification are 3.7V500mah's polymer lithium cell, arduino circuit board respectively with bluetooth module, FSR analog circuit signal plate and polymer lithium cell are connected, film pressure sensor is connected with the inside FSR analog circuit signal plate of shell. The utility model discloses carry the coal volume when directly obtaining current steel ball motion state and inferring in fact through film pressure sensor in inside to data are acquireed to wireless sensing's mode, have avoided the wiring problem, and simple easy operation need not to reform transform the ball mill, has good economic nature and practicality.

Description

A kind of detecting device of ball mill coal capcity

Technical field

This utility model belongs to measurement test device field, particularly relates to the detecting device of a kind of ball mill coal capcity.

Background technology

Coal pulverizer is one of the important auxiliary equipment in thermal power plant, and its effect is by the coal crusher of certain size the coal dust being milled into required specification, to supply boiler combustion.What at present both at home and abroad thermal power plant adopted in a large number is low speed coal mill, because it is reliable, be easily maintained, the feature such as strong adaptability and be widely used, the production process of thermal power plant is occupied critical role.But, low speed coal mill there is also that such as noise is big, power consumption is high, it is complex to run, the apparent shortcoming such as more of wearing and tearing.Low speed coal mill is as the visual plant in thermal power plant, and the economy that its coal-grinding benefit is run with whole power plant is closely related.

Automatically control in problem in low speed coal mill system, one prominent difficult point is in that the coal load quantity being difficult to directly measure in coal pulverizer, people have done substantial amounts of research work to how obtaining mill load best operating point for many years, some of them have also used more advanced detection and data processing method, but do not have a kind of degree having reached practical and reliable satisfaction.The method that coal load quantity is directly carried out accurately measurement by external many employings, e.g., installs weight-measuring device on low speed coal mill bearing, installs measuring equipment etc. additional between raw coal bucket and feeder.The investment of this kind of method is big, and quantities is heavy but control effect is not fairly obvious.Domestic, seldom adopt these methods measured directly, measure coal amount mainly by indirectly measurement means.

Most widely used at present be also the most traditional method measuring coal load quantity is differential pressure method.In low speed coal mill coal load quantity number with import and export differential pressure change have certain relation.When ature of coal, ventilation and steel ball loading capacity etc. remain unchanged, coal load quantity can increase along with the increase importing and exporting differential pressure, otherwise, then coal load quantity reduces.But owing to importing and exporting differential pressure by many factors joint effect, thus can not exactly only by it characterize coal load quantity number, be also not easy to make low speed coal mill reach higher control level.

Utility model content

A kind of detecting device of ball mill coal capcity, it is characterized in that, the shell 1 of this detecting device is nonmetallic hollow ball, some diaphragm pressure sensor 2 uniform folds are in the outside of shell 1, the inside of shell 1 is provided with Arduino circuit board 3, bluetooth module 4, FSR analog circuit signal plate 5 and poly-lithium battery 6 that specification is 3.7V500mah, Arduino circuit board 3 is connected with bluetooth module 4, FSR analog circuit signal plate 5 and poly-lithium battery 6 respectively, and diaphragm pressure sensor 2 is connected with the FSR analog circuit signal plate 5 within shell 1.

Beneficial effect

When this utility model breaches tradition steel ball coal capcity detection, indirect method at ball mill external detection relevant parameter, but directly directly obtain current steel ball kinestate in inside by diaphragm pressure sensor and infer its real-time coal capcity, data are obtained in the way of wireless sensing, avoid wiring issue, simple to operation, it is not necessary to transformation ball mill, there is good economy and practicality.

Accompanying drawing explanation

Fig. 1 is the structure chart of the detecting device of a kind of ball mill coal capcity that the utility model proposes；

Fig. 2 is the detailed connection figure of spherical detecting device internal circuit in embodiment；

Fig. 3 is specific works mode schematic diagram of the present utility model.

1-shell, 2-diaphragm pressure sensor, 3-Arduino circuit board, 4-bluetooth module, 5-FSR analog circuit signal plate, 6-poly-lithium battery, 7-USB module, 8-ball mill, 9-computer.

Detailed description of the invention

Below in conjunction with Figure of description and specific embodiment, this utility model is further described.Fig. 1 is the structure chart of the detecting device of a kind of ball mill coal capcity that the utility model proposes.The shell 1 of this detecting device is nonmetallic hollow ball, some diaphragm pressure sensor 2 uniform folds are in the outside of shell 1, the inside of shell 1 is provided with Arduino circuit board 3, bluetooth module 4, FSR analog circuit signal plate 5 and poly-lithium battery 6 that specification is 3.7V500mah, Arduino circuit board 3 is connected with bluetooth module 4, FSR analog circuit signal plate 5 and poly-lithium battery 6 respectively, and diaphragm pressure sensor 2 is connected with the FSR analog circuit signal plate 5 within shell 1.

In the present embodiment, the detailed model of part used is: flexiforc diaphragm pressure sensor (A401), ArduinoMiniPro circuit board, ATK-HC05Bluetooth bluetooth module, CX6020353.7V500mah poly-lithium battery, shell is that the material such as high-strength ceramic or highstrenghtpiston is made.

The detailed connection figure that Fig. 2 show in embodiment spherical detecting device internal circuit.Four pieces of diaphragm pressure sensor 2 resistance signal interfaces corresponding with four couple of FSR analog circuit signal plate 5 are connected.The VCC of FSR analog circuit signal plate 5, GND pin are connected with the VCC of Arduino circuit board 3, GND pin respectively；The thinking signal output pin of FSR analog circuit signal plate 5 is connected with tetra-analog quantity pins of A0, A1, A2, A3 of Arduino circuit board 3.The TXI of Arduino circuit board 3, RXI, VCC, GND pin are connected with the RX of bluetooth module 4, TX, VCC, GND pin respectively, and are set the pairing parameter of bluetooth module by AT order.The VCC of Arduino circuit board 3, GND pin are connected with the positive-negative power line of poly-lithium battery 6.The RX of the same kind of bluetooth module of another block, TX, VCC, GND pin are connected with the TX of TTL serial port transform USB module 7, RX, VCC, GND pin respectively, and TTL serial port transform USB module 7 are connected with computer 9.

Specific works mode of the present utility model is as shown in Figure 3, the kinestate of ball grinder interior is by the of the present utility model spherical detecting device perception being placed in ball mill 8 machine barrel, resistance signal is converted to voltage signal and passes to the Arduino circuit board 3 of inside by it, Arduino circuit board 3 is connected with bluetooth module 4, and by bluetooth module 4 send the data to that match with it, at another same model bluetooth module outside ball mill, and by TTL serial port transform USB module 7, real time data is sent to computer 9, it is achieved that the collection of data and detection.

Claims

1. the detecting device of a ball mill coal capcity, it is characterized in that, this device includes the hollow ball that shell (1) is nonmetallic materials, some diaphragm pressure sensors (2) uniform fold is in the outside of shell (1), the inside of shell (1) is provided with Arduino circuit board (3), bluetooth module (4), FSR analog circuit signal plate (5) and the poly-lithium battery (6) that specification is 3.7V500mah, Arduino circuit board (3) respectively with bluetooth module (4), FSR analog circuit signal plate (5) and poly-lithium battery (6) connect, diaphragm pressure sensor (2) is connected with FSR analog circuit signal plate (5) of shell (1) inside.