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class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ab3nhdj" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/XJSYTT/637259997093759766/1528964.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="wusxyu8" 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>新疆維吾爾自治區(qū)</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>博爾塔拉自來水漏水檢測銷售電話</p><p><span>***更新：</span>2020-05-30 12:42:52</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="dlgs772" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">新疆神韻圖騰信息科技有限公司</a></p><p><span>聯(lián)系人：</span>徐丕杰</p><p><span>郵箱: </span>371096279@qq.com</p><p><span>電話: </span></p><p><span>傳真: </span>0991_8891501</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0991-8891501</p><p><span>地址: </span>衛(wèi)星路477號(hào)11層辦公108室</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="ac2xyz2" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="igxduza" class="box"><p><p> 會(huì)進(jìn)一步削弱振動(dòng)的強(qiáng)度，聲音也逐漸減小。聲音除了描述大小的“聲強(qiáng)”外，還有“頻率”是指每秒振動(dòng)的次數(shù)，單位是赫茲（Hz）（振動(dòng)次數(shù)／秒），振動(dòng)頻率越高，博爾塔拉自來水漏水檢測銷售電話，人耳感覺愈“尖銳”，但人耳可聽到的比較高頻率約16000Hz，再高就進(jìn)入“超聲”，振動(dòng)頻率越低，人耳感覺愈“低沉”，但人耳可聽到的比較低頻率約16HZ，再低就進(jìn)入“次聲”。所謂“音質(zhì)”顧名思義，指聲音的品質(zhì)，它是一個(gè)比較難描述的概念，但基本上可以說是由不同頻率振動(dòng)的合成情況決定的，單頻聲如鋼琴一次敲擊的聲音，而周圍環(huán)境各種發(fā)聲體，不同強(qiáng)弱，不同頻率疊加而形成環(huán)境噪聲，就是典型的多頻聲。至于“漏水聲”因其噴水口的振動(dòng)，周圍被沖擊層的振動(dòng)，水流的擾動(dòng)，管壁的附加振動(dòng)等的、發(fā)聲機(jī)理不一，而至人耳的復(fù)雜路徑不同，傳至地面再被傳感器、放大器經(jīng)耳機(jī)，而至人耳的復(fù)雜性，它也是一種異常雜亂的聲音。但是，不管它如何雜亂總還是有相當(dāng)?shù)囊?guī)律可尋。在同一點(diǎn)測聽，至少有下列三個(gè)特點(diǎn)：1，博爾塔拉自來水漏水檢測銷售電話.連續(xù)性：只要漏水不突然中止，發(fā)聲就不會(huì)中斷。2.穩(wěn)定性：只要供水過程不突然變化，如水壓急快升、降等，聲音的響度就不會(huì)突變。3，博爾塔拉自來水漏水檢測銷售電話.內(nèi)容有豐富性：不是單頻聲、音樂聲、白噪聲而是某種沖擊。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="博爾塔拉自來水漏水檢測銷售電話" src="https://tyunfile.71360.com/UploadFile/XJSYTT/637259997093759766/1528964.png"></div><p> 紅外圖像將反映這一區(qū)別利用這一區(qū)別可以發(fā)現(xiàn)漏點(diǎn)，注意到由于地下排水，積水狀況可能因其它因素而不同。紅外輻射也可能由于非漏水因素產(chǎn)生，所以這種方法的應(yīng)用也受到限制。要點(diǎn)：漏水引發(fā)紅外輻射局部變化（溫度效應(yīng)）。4、相關(guān)檢漏法：從原理上說是一種基于聲振法的移植技術(shù)，屬于聲振法。漏水點(diǎn)引起的振動(dòng)沿管道向兩側(cè)傳播，放在兩側(cè)不同距離的傳感器收到某時(shí)刻漏水點(diǎn)發(fā)出的聲波將有一個(gè)時(shí)間差，這個(gè)時(shí)間差是由管道聲速和漏點(diǎn)位置決定的。它的突出優(yōu)點(diǎn)在于利用管道傳聲好，直接在官道上測量并由儀器計(jì)算定點(diǎn)，排除人的經(jīng)驗(yàn)因素，也可避免檢測者必須持工具到測點(diǎn)上方的問題，它的實(shí)際困難在于條件制約，必須有兩個(gè)放置傳感器的直接接觸管道點(diǎn)，也要對(duì)管道狀態(tài)十分清楚：包括走線、彎曲、管道口徑、聲音在不同管道中的傳播速度且傳聲條件要好。另一因素是價(jià)格昂貴，并對(duì)操作人員有一定的計(jì)算機(jī)應(yīng)用技術(shù)要求。目前已有多種國外型號(hào)相關(guān)檢測儀，在國內(nèi)市場銷售，國內(nèi)大自來水公司亦有不少應(yīng)用，但由于我國管網(wǎng)并無**檢測點(diǎn)，條件較差，應(yīng)用起來相當(dāng)不便，效果尚未理想，無法取代其它檢測手段***完成檢測任務(wù)。要點(diǎn)：相關(guān)檢漏法的技術(shù)先進(jìn)，但實(shí)際制約條件較多，價(jià)格昂貴。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="博爾塔拉自來水漏水檢測銷售電話" src="https://tyunfile.71360.com/UploadFile/XJSYTT/637259997882314453/8351324.png"></div><p> 漏水檢測的常用檢測方法及適用范圍（二）裝置工藝復(fù)雜，管道密集，地下管線縱橫交錯(cuò)，形成各自不同的網(wǎng)絡(luò)，埋地管道環(huán)境復(fù)雜；同時(shí)，石化裝置區(qū)內(nèi)噪音大、電磁干擾強(qiáng)，使用聽音棒和探知機(jī)在拾取漏水雜音時(shí)很難清晰地拾取到管道漏水溢出的雜音。此時(shí)，需綜合利用地面音強(qiáng)及音頻探測、管道音強(qiáng)及管道近距離音強(qiáng)音頻探測等多種漏水檢測方法，綜合分析閥栓檢測，路面檢測，相關(guān)儀檢測等多種檢測方法的結(jié)果，**終確認(rèn)漏水點(diǎn)準(zhǔn)確位置。相關(guān)儀檢測法是當(dāng)前較為先進(jìn)的一種漏水檢測方法。相關(guān)儀工作原理如下：在懷疑漏水的管道上放置兩個(gè)傳感器，漏水點(diǎn)發(fā)出的聲音會(huì)以一定的速度向左右兩側(cè)傳播，記錄下漏水聲音到達(dá)兩個(gè)傳感器的時(shí)間差，已知管道材質(zhì)和長度，相關(guān)儀就可以計(jì)算出漏水點(diǎn)的位置。使用相關(guān)儀進(jìn)行漏水檢測時(shí)，兩個(gè)加速傳感器必須放在同一條管道上，要根據(jù)現(xiàn)場情況合理選取探測距離，相關(guān)測量必須查明目標(biāo)管道的走向及連接情況。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="博爾塔拉自來水漏水檢測銷售電話" src="https://tyunfile.71360.com/UploadFile/XJSYTT/637259998363876953/4886243.png"></div></p><br /><p>文章來源地址: 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