• 概述

礦井提升機(jī)電控系統(tǒng)，采用先進(jìn)的矢量控制變頻調(diào)速技術(shù)完成提升機(jī)的四象限控制，用于由鼠籠電機(jī)或繞線電機(jī)轉(zhuǎn)子短接拖動(dòng)的各種提升機(jī)。既可用于新礦井安裝，又可用于老礦井改造，是一套性能在國(guó)內(nèi)居靠前水平的礦山提升機(jī)電控系統(tǒng)。特別是在多繩、多水平、雙機(jī)、斜井等復(fù)雜運(yùn)行場(chǎng)合，其優(yōu)越性更為明顯。

Summarize

The mine hoist electromechanical control system adopts the advanced vector control frequency conversion speed regulation technology to complete the four-quadrant control of the hoist, which is used for all kinds of elevators driven by the squirrel cage motor or the rotor of the winding motor. It can be used for both the installation of new mines and the transformation of old mines. It is a set of mine hoisting electromechanical control system with the highest performance in China. Especially in the multi-rope, multi-level, dual machine, inclined shaft and other complex operating occasions, its advantages are more obvious.

• 功能特點(diǎn)

系統(tǒng)由主控制臺(tái)、調(diào)速系統(tǒng)、外部測(cè)控元器件組成。

主控臺(tái)是該電控系統(tǒng)中的核心設(shè)備，采用技術(shù)先進(jìn)、性能可靠的西門子PLC可編程控制器，運(yùn)用現(xiàn)場(chǎng)總線方式，完善地處理了安全回路雙線制和全部提升工藝要求的控制問(wèn)題，同時(shí)還是用公司自行研制生產(chǎn)的多種檢測(cè)、控制模塊和顯示儀表完成了提升機(jī)運(yùn)行過(guò)程中應(yīng)有的邏輯控制，時(shí)間和速度控制，按行程的速度給定、PID速度閉環(huán)控制和各種情況下的安全保護(hù)等控制功能。

調(diào)速系統(tǒng)可以是高壓變頻柜、直流調(diào)速柜、低壓變頻柜，采用進(jìn)口西門子、ABB或國(guó)內(nèi)一線品牌作為主要部件，實(shí)現(xiàn)了高轉(zhuǎn)矩、高精度、寬調(diào)速范圍驅(qū)動(dòng)，配合制動(dòng)單元及電阻形成兩象限運(yùn)行，還可以采用具有能量回饋電網(wǎng)功能的變頻器，形成四象限運(yùn)行變頻柜，具有良好的節(jié)能效果。變頻器輸入功率因數(shù)高，電流諧波成分少，無(wú)需功率補(bǔ)償和諧波抑制設(shè)備。該產(chǎn)品具有低速輸出轉(zhuǎn)矩大，過(guò)載能力強(qiáng)，保護(hù)功能齊全，維護(hù)簡(jiǎn)單，可靠性高等特點(diǎn)。通過(guò)各種故障檢測(cè)電路，可以保障變頻器及電機(jī)可靠安全運(yùn)行。

外部測(cè)控元器件由速度測(cè)控部分、壓力測(cè)控部分、位置測(cè)控部分、深指測(cè)控部分組成。

采用性能優(yōu)越的進(jìn)口可編程控制器作為主要控制器件，兩套PLC相互冗余，構(gòu)成安全回路雙線制;多種控制方式:自動(dòng)開車、常規(guī)開車、低速開車、半速開車、應(yīng)急開車

保護(hù)功能:提升容器過(guò)卷保護(hù);減速段過(guò)速10%保護(hù);等速段超速15%保護(hù)提升容器接近井口速度超過(guò)2m/s;錯(cuò)向保護(hù);深指失效保護(hù);通訊錯(cuò)誤;

主回路過(guò)電壓或接地;電機(jī)定子、轉(zhuǎn)子回路故障;制動(dòng)油路系統(tǒng)故障;軸編碼器失效;鋼絲繩滑動(dòng)超限;潤(rùn)滑油欠壓;潤(rùn)滑油超溫;制動(dòng)系統(tǒng)油溫偏高;主機(jī)軸瓦過(guò)熱;信號(hào)電源接地、欠壓;制動(dòng)油故障;閘瓦磨損、閘盤偏擺、彈簧疲勞等。

Functional characteristics

The system consists of main console, speed control system and external measurement and control components.

The main control board is the core equipment of the electronic control system, which adopts the advanced technology and reliable performance of Siemens PLC programmable controller, and uses the fieldbus mode to perfectly deal with the control problems of the safety loop dual-wire system and all the upgrading process requirements. At the same time, it also uses a variety of detection, control modules and display instruments developed by the company to complete the logical control, time and speed control, speed setting according to the stroke, PID speed closed-loop control and security protection in various cases.

The speed control system can be a high voltage frequency conversion cabinet, DC speed control cabinet, low voltage frequency conversion cabinet, using imported Siemens, ABB or domestic first-line brands as the main components, to achieve high torque, high precision, wide speed control range drive, with the brake unit and resistance to form a two-quadrant operation, you can also use a frequency converter with energy feedback power grid function to form a four-quadrant operation frequency conversion cabinet. It has good energy-saving effect. Inverter input power factor is high, current harmonic components are less, no power compensation and harmonic suppression equipment. The product has the characteristics of low speed output torque, strong overload capacity, complete protection function, simple maintenance and high reliability. Through various fault detection circuits, the reliable and safe operation of the inverter and motor can be guaranteed.

The external measurement and control component is composed of speed measurement and control part, pressure measurement and control part, position measurement and control part and deep indication measurement and control part.

The imported programmable controller with superior performance is used as the main control device, and two sets of PLCS are redundant to form a double-wire system of safety loop. A variety of control methods: automatic driving, conventional driving, low speed driving, half speed driving, emergency driving

Protection function: Improve container overvolume protection; 10% over-speed protection in deceleration section; 15% overspeed in the constant velocity section of the protection lifting vessel approaching the wellhead at a speed exceeding 2m/s; Wrong direction protection; Failure protection; Communication errors;

Main loop overvoltage or ground; Motor stator, rotor loop failure; Brake oil circuit system failure; Shaft encoder failure; Wire rope slip out of limit; Lubricating oil underpressure; Lubricating oil overtemperature; Brake system oil temperature is high; Main engine bearing overheat; Signal power supply grounding, undervoltage; Brake oil failure; Brake shoe wear, brake disc deflection, spring fatigue, etc.