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class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332787845517578/4697461.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ym8cuwj" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>陜西省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>飼料**料位計(jì)好不好,料位計(jì)</p><p><span>***更新：</span>2021-02-03 01:12:09</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="nwyacol" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">西安倫騫電器設(shè)備有限責(zé)任公司</a></p><p><span>聯(lián)系人：</span>付海飛</p><p><span>郵箱: </span>xalunqian@163.com</p><p><span>電話: </span>13891837328</p><p><span>傳真: </span>138_</p><p><span>網(wǎng)址: </span>http://xalunqian.shop.88360.com</p><p><span>手機(jī): </span>138-91837328</p><p><span>地址: </span>高新區(qū)發(fā)展大道25號(hào)軍民融合創(chuàng)新港</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="8r4nzwd" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="42jvxjl" class="box"><p><p> 電容式料位計(jì)：電容式料位計(jì)原理是插入料倉(cāng)中的電極與料倉(cāng)壁之間構(gòu)成電容器，當(dāng)倉(cāng)內(nèi)物料料位變化引起電容量的變化時(shí)，通過(guò)轉(zhuǎn)換電路得到相應(yīng)的控制信號(hào)。因?yàn)殡娙萘渴沁B續(xù)變化的，因此該料位計(jì)可以用作連續(xù)式料位測(cè)量，也可用作料位開關(guān)，作為報(bào)警或喂料、卸料設(shè)備的輸入信號(hào)。該料位計(jì)有造價(jià)低、無(wú)機(jī)械磨損、安裝和維修方便等特點(diǎn)。傳統(tǒng)的方式是通過(guò)調(diào)頻振蕩電路實(shí)現(xiàn)電容量到頻率的轉(zhuǎn)換，又經(jīng)限幅放大及鑒頻器的線性化，得到相應(yīng)的電壓或電流信號(hào)。若使用一段時(shí)間后電極(探頭)上粘有物料，則往往會(huì)導(dǎo)致控制器誤動(dòng)作，現(xiàn)已由傳統(tǒng)的檢測(cè)電容量發(fā)展為檢測(cè)探頭與倉(cāng)壁間導(dǎo)納的方式。依據(jù)量程的大小和控制方式的不同，電極設(shè)計(jì)成桿(棒)式或鋼纜(重型鋼纜)式，可應(yīng)用于各種料倉(cāng)?，F(xiàn)在的新型產(chǎn)品為全密封一體化安裝結(jié)構(gòu)，采用射頻振蕩器和數(shù)字集成電路，飼料**料位計(jì)好不好，無(wú)運(yùn)動(dòng)機(jī)械部件，“數(shù)字標(biāo)定技術(shù)”使得用戶可以在空倉(cāng)的狀態(tài)下一次完成標(biāo)定，功能齊全、性能可靠、控制及時(shí)、顯示直觀。安裝此類料位計(jì)時(shí)應(yīng)注意選取合適的安裝點(diǎn)，避開下料口；注意信號(hào)線的屏蔽和接地，飼料**料位計(jì)好不好，防止干擾。但倉(cāng)內(nèi)物料溫度、濕度，飼料**料位計(jì)好不好、運(yùn)動(dòng)速度的變化以及物料粘掛倉(cāng)壁和電極等因素的影響，引起電容介電常數(shù)的變化。復(fù)合料位控制器采用機(jī)電位控原理，接觸測(cè)量料位。飼料**料位計(jì)好不好</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="飼料**料位計(jì)好不好,料位計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332787845517578/4697461.png"></div><p> 超聲波料位計(jì)：超聲波料位計(jì)裝置是利用聲納原理來(lái)確定容器內(nèi)物料料位的，是一種在線聲納定位設(shè)備。超聲波換能器發(fā)出的超聲波脈沖，通過(guò)空氣傳到物料的界面并被反射，測(cè)出超聲波脈沖從發(fā)射到換能器接收所用的時(shí)間，再根據(jù)空氣中的聲速，就可計(jì)算出換能器到物料面的距離，從而確定料位。物料表面的松散程度，對(duì)超聲波信號(hào)的衰減影響很大；若料倉(cāng)中彌漫料塵時(shí)，超聲波會(huì)被料塵吸收，從而使信號(hào)有所衰減，且粉料粘附在換能器表面等原因都嚴(yán)重影響料位測(cè)量的準(zhǔn)確性。因此，超聲波料位測(cè)量裝置適合塊狀物料的連續(xù)料位監(jiān)測(cè)。為解決該類儀器的不足，某些生產(chǎn)廠家，通過(guò)采用新材料、新技術(shù)，提高了換能器發(fā)射強(qiáng)度，避免了換能器的掛料、堵塞現(xiàn)象，并能應(yīng)用于高溫環(huán)境。在控制電路設(shè)計(jì)中，增加鑒別真?zhèn)涡盘?hào)的功能，使研制的超聲波料位計(jì)成功應(yīng)用于水泥倉(cāng)。筆者曾到北京某混凝土攪拌站現(xiàn)場(chǎng)考察過(guò)某大學(xué)聲學(xué)研究所的儀器，發(fā)現(xiàn)它安裝和使用方便，測(cè)量數(shù)據(jù)準(zhǔn)確。河北鎳鐵爐料倉(cāng)料位計(jì)智能型射頻導(dǎo)納料位計(jì)是基于射頻導(dǎo)納原理設(shè)計(jì)的連續(xù)物位測(cè)量產(chǎn)品。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="飼料**料位計(jì)好不好,料位計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332787264482422/5674836.png"></div><p> 一般的阻旋式料位計(jì)安裝都很方便，使用*普遍的還是阻旋式料位計(jì)，那么阻旋式料位計(jì)的安裝應(yīng)用是怎樣的呢?一起來(lái)了解一下。 </p> <p> 阻旋式料位計(jì)安裝： </p> <p> 安裝要求：阻旋式料位計(jì)的安裝應(yīng)使葉片所處的位置避開進(jìn)料口的下部和料倉(cāng)死料區(qū)，為防止使用中物料的砸擊，應(yīng)在檢測(cè)葉片的上方安裝防護(hù)板。如采用加長(zhǎng)軸垂直安裝，則應(yīng)安裝保護(hù)套筒或使葉片和軟軸所處位置不至受到物料的直接砸擊。多位測(cè)量時(shí)應(yīng)適當(dāng)拉開距離，避免發(fā)生軟軸的相互纏繞。為避免室外環(huán)境雨水的滲入，側(cè)裝時(shí)應(yīng)使出線口垂直向下并旋緊上蓋。垂直安裝時(shí)如有條件，可考慮加裝防雨罩。 </p> <p> <br /> </p><p> 煤粉雷達(dá)料位計(jì)概述及原理： </p> <p> 高頻微波脈沖通過(guò)天線系統(tǒng)發(fā)射并接收，雷達(dá)波以光速運(yùn)行，遇到被測(cè)介質(zhì)表面，其部分能量被反射回來(lái)，被同天線接收，發(fā)射脈沖與接收的脈沖的時(shí)間間隔與天線到被測(cè)介質(zhì)表面的離是成正比的，運(yùn)行時(shí)間可以通過(guò)電子部件轉(zhuǎn)換成物位信號(hào)。一種特殊的時(shí)間延伸方法可以確保穩(wěn)定和精確的測(cè)量。即使工況比較復(fù)雜的情況下，存在回波用新的微處理技術(shù)和調(diào)試軟件也可以準(zhǔn)確的識(shí)別出物位的回波。 </p> <p> 天線接收反射的微波脈沖并將其傳輸給電子線路，微處理器對(duì)此信號(hào)進(jìn)行處理，識(shí)別出微脈沖在物料表面所產(chǎn)生的回波。正確的回波依賴識(shí)別由智能軟件完成，精度可達(dá)到毫米級(jí)，距離物料表面的距離D與脈沖的時(shí)間行程T成正比：D=C X T/2(其中C為光速），因空罐的距離E已知，則物位L為L(zhǎng)=E-D。通過(guò)輸入空罐高度E(=零點(diǎn)），滿罐高度F(=滿量程）及一些應(yīng)用參數(shù)來(lái)設(shè)定，應(yīng)用參數(shù)將自動(dòng)使儀表適應(yīng)測(cè)量環(huán)境，對(duì)應(yīng)于4~20mA輸出。采用接觸測(cè)量，結(jié)果真實(shí)、準(zhǔn)確可靠;可水平、傾斜與垂直安裝，安裝使用方便。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="飼料**料位計(jì)好不好,料位計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/xalunqian/637332787381660156/5297429.png"></div><p> 雷達(dá)料位測(cè)量原理和主要技術(shù)因素： </p> <p> 雷達(dá)料位計(jì)是利用回波測(cè)距原理。發(fā)射天線向被測(cè)目標(biāo)發(fā)射微波，被測(cè)目標(biāo)的微波被接收天線接收，信號(hào)處理器將發(fā)射信號(hào)與接收信號(hào)比較，計(jì)算出被測(cè)距離，并可算出相應(yīng)的物位值。 </p> <p> 微波脈沖來(lái)回傳播時(shí)間t由下式?jīng)Q定： </p> <p> t= （1）； </p> <p> 式中a—天線到被測(cè)目標(biāo)的距離； </p> <p> c—微波傳播的速度（光速）。 </p> <p> <p> 由于微波在傳播途徑上有衰減和干擾反射，故測(cè)量的關(guān)鍵是要能接收到反射回波，并識(shí)別出有效回波。接收的回波能量Pk可用簡(jiǎn)化的雷達(dá)方程表示如下： </p> <p> Pk=Pτx C x GiGtGr/r4 （2） </p> <p> 式中： Pτ—天線輻射功率；C ——- 經(jīng)驗(yàn)系數(shù)，由經(jīng)驗(yàn)決定；Gi——- 由目標(biāo)表面介電特性及面積決定的反射增益；Gt，Gr—天線發(fā)射和接收效率；r—天線與目標(biāo)間的距離。 </p> <p> 從式（2）知：接收的回波能量大小與天線的發(fā)射和接收效率以及天線輻射功率有關(guān)，故雷達(dá)料位計(jì)的天線設(shè)計(jì)和形狀很關(guān)鍵關(guān)鍵，現(xiàn)有的天線除號(hào)角天線（喇叭口）和棒狀天線外，還有平面天線和拋物面天線，為用于介電常數(shù)較小的物料，將纜繩作為天線或安裝導(dǎo)波管，纜繩和導(dǎo)波管一直延伸到庫(kù)或倉(cāng)底，由此來(lái)傳遞發(fā)送和接收的電磁波，增強(qiáng)了回波的信號(hào)。 </p> 雷達(dá)料位計(jì)對(duì)液體、顆粒及漿料連續(xù)物位測(cè)量。測(cè)量不受介質(zhì)變化、溫度變化、惰性氣體及蒸汽、粉塵等的影響。河北鎳鐵爐料倉(cāng)料位計(jì)</p><p style="text-indent:25px">電容式液位計(jì)是將被測(cè)量對(duì)象位置的變化轉(zhuǎn)換成電容量的一種裝置，電容液位計(jì)具有結(jié)構(gòu)簡(jiǎn)單，分辨力高。飼料**料位計(jì)好不好</p><p> 高溫導(dǎo)波料位計(jì)用于鎳鐵爐料倉(cāng)料位測(cè)量：鎳鐵在煉鋼工業(yè)中作為合金元素添加劑，可提高鋼的抗彎強(qiáng)度和硬度，在鑄鐵中可使其結(jié)構(gòu)均勻，密度提高，也可用作含鎳或含鎳鉻鑄鐵軋輥及其他鑄造合金加入劑。、在現(xiàn)有鎳鐵的冶煉工藝過(guò)程中，大多是這樣一個(gè)工藝流程：原料場(chǎng)→篩分、破碎和混勻配料→回轉(zhuǎn)窯→礦熱爐→鐵包脫硫→精煉轉(zhuǎn)爐→澆鑄。由于回轉(zhuǎn)窯內(nèi)混合料溫度高達(dá)600℃，通過(guò)轉(zhuǎn)運(yùn)料倉(cāng)運(yùn)送至鎳鐵爐過(guò)度料倉(cāng)的溫度也非常高，近于400℃的高溫，在這種高溫、高粉塵、料倉(cāng)狹小的工況下，很多料位計(jì)都難以滿足如此惡劣的使用環(huán)境，現(xiàn)有的解決辦法都是通過(guò)操作工目測(cè)的辦法來(lái)估算過(guò)渡料倉(cāng)的料位，沒(méi)有一個(gè)準(zhǔn)確的測(cè)量依據(jù)，不但造成原料的浪費(fèi)，還常常因?yàn)樵O(shè)備故障而停產(chǎn)，造成巨大的經(jīng)濟(jì)損失，更甚者因?yàn)楦邷卦系囊绯鰧?dǎo)致火災(zāi)，造成人員傷亡的事故。有沒(méi)有一種使用可靠的料位測(cè)量設(shè)備來(lái)對(duì)鎳鐵爐的料倉(cāng)料位進(jìn)行實(shí)時(shí)測(cè)量呢？經(jīng)過(guò)我們長(zhǎng)時(shí)間的研究，終于找到一種極為可靠而又成本低廉的高溫料位測(cè)量方法，通過(guò)長(zhǎng)時(shí)間的實(shí)際測(cè)試驗(yàn)證，高溫型導(dǎo)波雷達(dá)料位計(jì)完全可以解決高溫、高粉塵、料倉(cāng)狹小帶來(lái)的料位測(cè)量問(wèn)題。飼料**料位計(jì)好不好</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3130738.html</p></div></div></div></div></div><div id="bjld84j" 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