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src="https://tyunfile.71360.com/UploadFile/15958815551/637238386947402344/986727.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="m8ac2t3" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/15958815551/637238386947402344/986727.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="kodfmtx" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>浙江省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產品關鍵詞：</span>余杭區(qū)通風管道使用范圍,通風管道</p><p><span>***更新：</span>2021-02-03 05:18:41</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="x3szbxz" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">寧波盼達環(huán)?？萍加邢薰?/a></p><p><span>聯(lián)系人：</span>李盼盼</p><p><span>郵箱: </span>305497921@qq.com</p><p><span>電話: </span>15958815551</p><p><span>傳真: </span>0574_</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>0574-15958815</p><p><span>地址: </span>掌起鎮(zhèn)戎家村大佑塘18號</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="bvxpro3" class="page-proshow02"><p class="title">詳細說明</p><div id="gpr72mb" class="box"><p><p> 風量測定 </p> <p> 1動壓法測量排風罩的風量 </p> <p> 按式(2.8－4)計算出斷面上各測點流速的平均值vp，則排風罩的排風量為： </p> <p> L=vp·F (m3/s) (2.8－6) </p> <p> 式中vp—平均風速，余杭區(qū)通風管道使用范圍，m/s； </p> <p> F—管道斷面積，m2。 </p> <p> 靜壓法測量排風罩的風量 </p> <p> 在現(xiàn)場測定時，余杭區(qū)通風管道使用范圍，各管件之間的距離很短，不易找到比較穩(wěn)定的測定斷面，用動壓法測量流量有一定困難。在這種情況下，通過測量靜壓求得排風罩的風量。局部排風罩壓力損失： </p> <p> 各種排風罩的流量系數(shù)可用實驗方法求得，從公式(2.8－8)可以看出：μ值可以從有關資料查得。由于實際的排風罩和資料上給出的不可能完全相同，按資料上的μ值計算排風量會有一定的誤差。 </p> <p> 在一個有多個排風點的排風系統(tǒng)中，可先測出排風罩的μ值，然后按公式(2.8－10)算出各排風罩要求的靜壓，通過調整靜壓調整各排風罩的排風量，工作量可以減小。上述原理也適用于送風系統(tǒng)風量的調節(jié)。如均勻送風管上要保持各孔口的送風量相等，余杭區(qū)通風管道使用范圍，只需調整出口處的靜壓，使其保持相等。 </p> <p> <br /> 通風管道上常用的風管管件有哪些 -？余杭區(qū)通風管道使用范圍</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="余杭區(qū)通風管道使用范圍,通風管道" src="https://tyunfile.71360.com/UploadFile/15958815551/637238386947402344/986727.jpg"></div><p> 分類 </p> <p> 根據(jù)國家建筑材料行業(yè)標準JC646-1996標準的規(guī)定，無機玻璃鋼通風管道按用途分為P類管和D類管兩種。P類管主要用于公共建筑、人防工程及一般需要安裝通風及空調設施的工業(yè)廠房和礦井等，作通風管、排煙管和排塵管；D類管則主要用作住宅建筑的通風管、排油煙管。 </p> <p> 產品質量等級 </p> <p> 根據(jù)無機玻璃鋼通風管道的物理力學性能和外觀質量，無機玻璃鋼通風管道分為一級品和合格品兩個等級。 </p> <p> 產品規(guī)格 </p> <p> 無機玻璃鋼通風管道的尺寸主要由設計單位根據(jù)工程需要的通風量進行設計，也可根據(jù)客戶的具體要求設計。 </p> <p> <br /> 余杭區(qū)通風管道使用范圍如何選擇通風管道材料？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="余杭區(qū)通風管道使用范圍,通風管道" src="https://tyunfile.71360.com/UploadFile/15958815551/637255771835244141/783078.png"></div><p> 風管的保溫 </p> <p> 1、矩形風管玻璃纖維棉保溫訂數(shù)量底面每平方米不應少于16個，側面不應少于10個，頂面不應少于8個。首行保溫釘至風管或保溫材料邊沿的距離應小于120mm </p> <p> 2、空調風管的保溫材料一般用橡塑板或玻璃棉，排煙風管保溫材料一般用巖棉板。 </p> <p> 風管立管的安裝風管垂直安裝，間距不應大于4m，單個立管至少有2個固定點。 </p> <p> 屋面風管的安裝 </p> <p> 屋面風管做防水彎，出、回風口設置防蟲網(wǎng)。 </p> <p> <br /> </p> <p> <br /> </p> <p> 風管的嚴密性試驗 </p> <p> 1、風管系統(tǒng)安裝完畢后，應按系統(tǒng)類別進行嚴密性檢驗。 </p> <p> 2、檢測應采用具有一定強度的安全光源。手持移動光源可采用不低于100W帶保護罩的低壓照明燈，或其他低壓光源。 </p> <p> 3、系統(tǒng)風管漏光檢測時，光源可置于風管內側或外側，但其相對側應為暗黑環(huán)境。檢測光源應沿著被檢測接口部位與接縫做緩慢移動，在另一側進行觀察，當發(fā)現(xiàn)有光線射出，則說明查出明顯漏風處，并應做好記錄。 </p> <p> 4、對系統(tǒng)風管的檢測，宜采用分段檢測、匯總分析的方法。在嚴格安裝質量管理的基礎上，系統(tǒng)風管的檢測以總管和干管為主。當采用漏光法檢測系統(tǒng)的嚴密性時，低壓系統(tǒng)風管以每10m接縫，漏光點不大于2處，且100m接縫平均不大于16處為合格；中壓系統(tǒng)風管每10m接縫，漏光點不大于1處，且100m接縫平均不大于8處為合格。 </p> <p> <br /> </p> <p> <br /> </p><p> 通風管道風壓、風速、風量測定方法 </p> <p> 一、測定位置和測定點 </p> <p> (一)測定位置的選擇 </p> <p> 通風管道內風速及風量的測定，是通過測量壓力換算得到。測得管道中氣體的真實壓力值，除了正確使用測壓儀器外，合理選擇測量斷面、減少氣流擾動對測量結果的影響很大。測量斷面應盡量選擇在氣流平穩(wěn)的直管段上。測量斷面設在彎頭、三通等異形部件前面(相對氣流流動方向)時，距這些部件的距離應大于2倍管道直徑。當測量斷面設在上述部件后面時，距這些部件的距離應大于4～5倍管道直徑。當測試現(xiàn)場難于滿足要求時，為減少誤差可適當增加測點。但是，測量斷面位置距異形部件的**小距離至少是管道直徑的1.5倍。 </p> <p> <p> (二)測試孔和測定點 </p> <p> 由于速度分布的不均勻性，壓力分布也是不均勻的。因此，必須在同一斷面上多點測量，然后求出該斷面的平均值。 </p> <p> 1圓形風道 </p> <p> 在同一斷面設置兩個彼此垂直的測孔，并將管道斷面分成一定數(shù)量的等面積同心環(huán)，對于圓形風道，測點越多，測量精度越高。 </p> <p> <br /> </p> 通風管道屬于那一類？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="余杭區(qū)通風管道使用范圍,通風管道" src="https://tyunfile.71360.com/UploadFile/15958815551/637255771879570312/3779519.png"></div><p> 排煙管與附件的安裝 </p> <p> 1、排煙管宜采用鋼管或鑄鐵管。當采用焊接鋼管時，其壁厚應大于3mm；管道連接宜采用焊接。當采用法蘭連接時，法蘭面應平整，并應有密封槽；法蘭之間應襯墊耐熱膠墊。 </p> <p> 2、埋設于混凝土內的鑄鐵排煙管，宜采用法蘭連接。 </p> <p> 3、排煙管應沿軸線方向設置熱脹補償器。單向套管伸縮節(jié)應與前后排煙管同心。柴油機排煙管與排煙總管的連接段應有緩沖設施。 </p> <p> 4、排煙管的安裝，應符合下列規(guī)定： </p> <p> （1）坡度應大子0.5％，放水閥應設在比較低處； </p> <p> （2）清掃孔堵板應有耐熱墊層，并固定嚴密； </p> <p> （3）當排煙管穿越隔墻時，其周圍空隙應采用石棉繩填充密實； </p> <p> （4）排煙管與排煙道連接處，應預埋帶有法蘭及密閉翼環(huán)的密閉穿墻短管。 </p> <p> （5）排煙管的地面出口端應設防雨帽；在伸出地面150～200mm處，應采取防止排煙管堵塞的措施。 </p> <p> <br /> 通風管道設計規(guī)范？？柯城區(qū)通風管道型號</p><p style="text-indent:25px">通風管道是風管還是風道？余杭區(qū)通風管道使用范圍</p><p> 測定記錄應包括下列項目： </p> <p> 1)機組及輔機系統(tǒng)各種運行狀態(tài)的工作情況； </p> <p> 2)柴油機的瞬態(tài)和穩(wěn)態(tài)調速率； </p> <p> 3)機組的溫升； </p> <p> 4)油耗； </p> <p> 5)色； </p> <p> 6)壓縮空氣或蓄電池的啟動瞬時壓降、啟動后的壓力或電壓及可啟動次數(shù)； </p> <p> 7)發(fā)電機調壓性能； </p> <p> 8)并車、自啟動、調頻調載裝置的運行參數(shù)。 </p> <p> 2、裝有遠距離自動控制臺和機房儀表臺的柴油發(fā)電機組，尚應進行下列檢驗： </p> <p> （1）分別用自動和手動遠動控制的方法進行試運轉； </p> <p> （2）進行自啟動系統(tǒng)可靠性試驗，測定啟動時間； </p> <p> （3）聲光報警信號情況； </p> <p> （4）柴油機調速和停車電磁閥工作情況； </p> <p> （5）機房和控制室聯(lián)絡信號裝置工作情況。 </p> <p> <br /> 余杭區(qū)通風管道使用范圍</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3135027.html</p></div></div></div></div></div><div id="oya2ho7" class="page-right twoColRt"><div id="d8my8ol" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="rgdaxen" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應" class="vcenter" 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