NJGC型耐壓式稱重給煤機(jī)：
NJGC系列耐壓式膠帶給煤機(jī)是針對當(dāng)前熱（發(fā)）電廠循環(huán)流化床鍋爐系統(tǒng)而設(shè)計的耐溫、 壓給煤機(jī)。該機(jī)具有在微正壓壓力小于0.35MPa和工作溫度小于150℃下長期工作。可實現(xiàn)由煤倉到鍋爐入煤的連續(xù)給煤，是一種智能化的動態(tài)計量設(shè)備。
工作原理：
給煤機(jī)利用膠帶拖動原煤運(yùn)行，當(dāng)原煤從煤倉被膠帶拖出后，在膠帶的帶動下，靠自重與膠帶之間的摩擦力平穩(wěn)地向前移動．從而實現(xiàn)連續(xù)、均勻地給煤。
在輸送膠帶的下方，安裝有稱重托輥、稱重橋架、稱重傳感器，裝有稱重傳感器的稱重橋架安裝于輸送機(jī)的縱梁上，稱重橋架支承著稱重托輥，以檢測皮帶上的物料重量并產(chǎn)生一個正比于皮帶載荷的電信號，送給稱重顯示儀表。
連接在滾筒上的速度傳感器，提供一系列脈沖，每個脈沖表示一個皮帶運(yùn)動單位，脈沖的頻率正比于皮帶速度。稱重顯示儀表接收稱重傳感器與速度傳感器兩種信號后，通過放大、整形、A/D轉(zhuǎn)換處理與積分運(yùn)算，在儀表的顯示器上顯示出輸送原煤的累計重量和瞬時流量。
NJGC系列耐壓式膠帶給煤機(jī)是針對當(dāng)前熱（發(fā)）電廠循環(huán)流化床鍋爐系統(tǒng)而設(shè)計的耐溫、 壓給煤機(jī)。該機(jī)具有在微正壓壓力小于0.35MPa和工作溫度小于150℃下長期工作。可實現(xiàn)由煤倉到鍋爐入煤的連續(xù)給煤，是一種智能化的動態(tài)計量設(shè)備。
工作原理：
給煤機(jī)利用膠帶拖動原煤運(yùn)行，當(dāng)原煤從煤倉被膠帶拖出后，在膠帶的帶動下，靠自重與膠帶之間的摩擦力平穩(wěn)地向前移動．從而實現(xiàn)連續(xù)、均勻地給煤。
在輸送膠帶的下方，安裝有稱重托輥、稱重橋架、稱重傳感器，裝有稱重傳感器的稱重橋架安裝于輸送機(jī)的縱梁上，稱重橋架支承著稱重托輥，以檢測皮帶上的物料重量并產(chǎn)生一個正比于皮帶載荷的電信號，送給稱重顯示儀表。
連接在滾筒上的速度傳感器，提供一系列脈沖，每個脈沖表示一個皮帶運(yùn)動單位，脈沖的頻率正比于皮帶速度。稱重顯示儀表接收稱重傳感器與速度傳感器兩種信號后，通過放大、整形、A/D轉(zhuǎn)換處理與積分運(yùn)算，在儀表的顯示器上顯示出輸送原煤的累計重量和瞬時流量。
設(shè)備組成：
NJGC系列耐壓式稱重給煤機(jī)主要由以下幾部分組成：膠帶給煤機(jī)主要包括輸送機(jī)支架、封閉耐壓殼體、裙邊環(huán)形皮帶、電機(jī)減速機(jī)、進(jìn)料口閘門（手動或電動）、出料口閘門、照明燈、防偏裝置、堵煤裝置、超溫報警裝置；電子稱重系統(tǒng)包括WTC3000B或6000B給料機(jī)控制器、稱重傳感器（進(jìn)口）、測速傳感器、ICS-30型秤架；電氣控制系統(tǒng)包括變頻器控制柜、儀表控制柜、現(xiàn)場接線箱等。
系統(tǒng)特點(diǎn)：
◆全封閉耐壓式有圓筒形和方形結(jié)構(gòu)，有效防止粉塵外溢，可保證現(xiàn)場文明生產(chǎn)；
◆根據(jù)用戶要求，也可設(shè)計將機(jī)架拉出箱體以便維護(hù)與檢修；
◆具有防偏檢測報警輸出及自動糾偏功能，可確保輸送機(jī)正常穩(wěn)定運(yùn)行；
◆采用本公司的電子皮帶秤，可確保計量的準(zhǔn)確性和長期穩(wěn)定性；
◆稱重顯示儀表具有可選的RS232/RS485通信接口；
◆變頻無級調(diào)速運(yùn)行平穩(wěn)，節(jié)能降耗，可滿足現(xiàn)場開環(huán)或閉環(huán)調(diào)節(jié)不同流量的要求；
◆鏈條刮板式清掃裝置可自動地清掃體內(nèi)的積煤或積灰；
◆*的報警系統(tǒng)可及時地發(fā)現(xiàn)并排除堵煤、斷煤、過載、超溫和皮帶跑偏等故障；
◆配置的高溫隔離閘門，可防止熱風(fēng)回流，為安全生產(chǎn)和檢修提供方便；
◆可與DCS遠(yuǎn)控系統(tǒng)連鎖，實現(xiàn)智能控制。
主要技術(shù)參數(shù)：
耐壓壓力：<0.35MPa
計量精度：≤±0.25%或±0.5%
控制精度：±1%
輸送能力：2~300t/h
皮帶寬度：400~1200mm
工作溫度：≤150℃
進(jìn)出料口中心距：≥1500mm
調(diào)整范圍：0.05~1m/s
報警接點(diǎn)容量：220Vac，5A
總功率：1.1-10kw
NJGC series pressure-resistant belt coal feeder is designed for the current heat (hair) power plant circulating fluidized bed boiler system. The machine has long-term operation at micro-positive pressure of less than 0.35 MPa and working temperature of less than 150°C. It is a kind of intelligent dynamic measuring equipment to realize the continuous coal supply from coal bunker to boiler. Working principle: The coal feeder uses the tape to drag the raw coal to run, when the raw coal is dragged out of the coal bunker by the tape, driven by the tape, the friction between the weight and the tape moves smoothly forward. Thus, the continuous and uniform coal supply is realized. At the bottom of the conveying tape, there are weighing rollers, weighing bridge frame, weighing sensor, weighing bridge frame with weighing sensor is installed on the longitudinal beam of the conveyer, and the weighing bridge frame is supported with weighing roller to detect the material weight on the belt and produce an electrical signal proportional to the belt load, which is sent to the weighing display instrument. a speed sensor connected to the drum provides a series of pulses, each representing a belt moving unit. the frequency of the pulse is proportional to the belt speed. After the weighing display instrument receives the two kinds of signals of weighing sensor and speed sensor, through amplification, shaping, A/D conversion processing and integral operation, the accumulative weight and instantaneous flow of raw coal are displayed on the display of the instrument. Equipment composition: NJGC series of pressure-resistant weighing coal feeder mainly consists of the following parts: belt coal feeder mainly includes conveyor support, closed pressure-resistant shell, skirt ring belt, motor reducer, inlet gate (manual or electric), outlet gate, lighting lamp, anti-bias device, coal plugging device, overtemperature alarm device; electronic weighing system includes WTC3000B or 6000 B feeder controller, weighing sensor (inlet), speed measuring sensor, ICS-30 type frame; electrical control system includes control cabinet, instrument control cabinet, field frequency converter box, etc. System characteristics: ◆ fully closed pressure type has cylindrical and square structure, effectively prevent dust overflow, can ensure civilized production on site; ◆ can also be designed to pull the frame out of the box for maintenance and repair according to user requirements; ◆ has anti-bias detection alarm output and automatic correction function to ensure the normal and stable operation of conveyors; ◆ the use of our company's outstanding performance of electronic belt scale, can ensure the accuracy of measurement and long-term stability; ◆ weighing display instrument has optional RS232/RS485 communication interface; ◆ variable frequency stepless speed regulation running smoothly, saving energy and reducing consumption, can meet the field open-loop or closed-loop regulation of different flow requirements; ◆ chain scraper type cleaning device can automatically clean the body of coal or ash; ◆ perfect alarm system can detect and eliminate the faults of blocking coal, breaking coal, overload, overtemperature and belt deviation in time; ◆ high temperature isolation gate, which can prevent hot air reflux and provide convenience for safe production and maintenance; ◆ can be linked with DCS remote control system to achieve intelligent control. Main technical parameters: Pressure pressure:
五寨县|
澜沧|
沧州市|
内江市|
拜泉县|
贡嘎县|
富源县|
南澳县|
永春县|
滦南县|
沙坪坝区|
永嘉县|
米泉市|
从化市|
汝州市|
蒙阴县|
建宁县|
微山县|
石城县|
巴马|
余干县|
徐水县|
略阳县|
武陟县|
娱乐|
龙游县|
揭西县|
绍兴市|
靖西县|
昭苏县|
达拉特旗|
晋城|
营口市|
宜章县|
嘉禾县|
永春县|
资阳市|
阿拉尔市|
贡嘎县|
板桥市|
金塔县|