超(chao)聲波扭(niu)曲換能器常見問題(ti)

1、超聲波(bo)振子(zi)受潮(chao)，可以(yi)(yi)用兆歐表檢(jian)查與(yu)換(huan)能(neng)器(qi)(qi)相連接(jie)的插頭，檢(jian)查絕緣電阻(zu)值(zhi)就可以(yi)(yi)判斷基本情況，一(yi)般要求絕緣電阻(zu)大于(yu)5兆歐以(yi)(yi)上(shang)。如果達不(bu)到(dao)這個(ge)絕緣電阻(zu)值(zhi)，一(yi)般是換(huan)能(neng)器(qi)(qi)受潮(chao)，可以(yi)(yi)把換(huan)能(neng)器(qi)(qi)整體（不(bu)包括噴塑外殼）放進烘箱設定100℃ 左右烘干3小時(shi)或者(zhe)使用電吹風去潮(chao)至阻(zu)值(zhi)正常為(wei)止。 　 2、換(huan)能(neng)器(qi)(qi)振子(zi)打(da)火，陶瓷材料碎裂，可以(yi)(yi)用肉眼和(he)兆歐表結合檢(jian)查，ptfe芯軸(zhou)怎么樣，一(yi)般作為(wei)應急處理的措施(shi)，可以(yi)(yi)把個(ge)別損壞的振子(zi)斷開，不(bu)會影響到(dao)別的振子(zi)正常使用。

3、振子脫膠(jiao)(jiao)，我們的換能(neng)器是采用膠(jiao)(jiao)結，螺釘緊(jin)固(gu)雙重保證工(gong)藝，ptfe芯軸報(bao)價，在一(yi)般情況下會出現這(zhe)種情況。

4、不(bu)銹鋼振動面穿孔，ptfe芯軸(zhou)，一般換能(neng)器(qi)滿(man)負荷使用(yong)10年可能(neng)會出(chu)現(xian)振動面穿孔的情況(kuang)。

超聲(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)(bo)(bo)(bo)扭曲換(huan)(huan)能(neng)(neng)器(qi)(qi)，包括(kuo)外(wai)殼(1)、匹(pi)配層(ceng)即聲(sheng)(sheng)(sheng)(sheng)(sheng)窗(chuang)(2)、壓(ya)電陶瓷圓盤(pan)(pan)換(huan)(huan)能(neng)(neng)器(qi)(qi)(3)、背襯(4)、引出電纜(lan)(5)，其特征(zheng)在于(yu)(yu)它(ta)還包括(kuo)Cymbal陣列接(jie)(jie)l收(shou)(shou)器(qi)(qi)，它(ta)由(you)引出電纜(lan)(6)、8～16只Cymbal換(huan)(huan)能(neng)(neng)器(qi)(qi)(7)、金屬圓環(huan)(8)、(9)和(he)橡膠墊圈(10) 組(zu)成；Cymbal陣列接(jie)(jie)l收(shou)(shou)器(qi)(qi)位于(yu)(yu)圓盤(pan)(pan)式(shi)壓(ya)電換(huan)(huan)能(neng)(neng)器(qi)(qi)3之上；壓(ya)電陶瓷圓盤(pan)(pan)換(huan)(huan)能(neng)(neng)器(qi)(qi)用(yong)(yong)作基本的超聲(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)(bo)(bo)(bo)換(huan)(huan)能(neng)(neng)器(qi)(qi)，由(you)它(ta)發射和(he)接(jie)(jie)收(shou)(shou)超聲(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)(bo)(bo)(bo)信號(hao)；Cymbal陣列接(jie)(jie)l收(shou)(shou)器(qi)(qi)位于(yu)(yu)圓盤(pan)(pan)式(shi)壓(ya)電換(huan)(huan)能(neng)(neng)器(qi)(qi)之上，作為超聲(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)(bo)(bo)(bo)接(jie)(jie)l收(shou)(shou)器(qi)(qi)，用(yong)(yong)于(yu)(yu)接(jie)(jie)收(shou)(shou)圓盤(pan)(pan)換(huan)(huan)能(neng)(neng)器(qi)(qi)頻帶(dai)之外(wai)的多l普勒回波(bo)(bo)(bo)(bo)(bo)(bo)信號(hao)。主要(yao)適用(yong)(yong)與超聲(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)(bo)(bo)(bo)塑料焊(han)接(jie)(jie)機(ji)(ji)(ji)、超聲(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)(bo)(bo)(bo)金屬焊(han)接(jie)(jie)機(ji)(ji)(ji)，ptfe芯(xin)軸(zhou)廠(chang)家，超聲(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)(bo)(bo)(bo)清(qing)洗機(ji)(ji)(ji)，氣相機(ji)(ji)(ji)，三氯機(ji)(ji)(ji)等。

超(chao)(chao)(chao)聲(sheng)波(bo)(bo)換能器(qi)，其實就是(shi)頻(pin)率與其諧(xie)振(zhen)頻(pin)率相同的(de)壓電(dian)(dian)陶瓷(ci)，利用的(de)是(shi)材料的(de)壓電(dian)(dian)效(xiao)應將(jiang)電(dian)(dian)能轉換為機械振(zhen)動。一(yi)般情況下，先由超(chao)(chao)(chao)聲(sheng)波(bo)(bo)發生(sheng)器(qi)產生(sheng)超(chao)(chao)(chao)聲(sheng)波(bo)(bo)，經超(chao)(chao)(chao)聲(sheng)波(bo)(bo)換能器(qi)將(jiang)其轉換為機械振(zhen)動，再(zai)經超(chao)(chao)(chao)聲(sheng)波(bo)(bo)導出裝(zhuang)置、超(chao)(chao)(chao)聲(sheng)波(bo)(bo)接收裝(zhuang)置便可產生(sheng)超(chao)(chao)(chao)聲(sheng)波(bo)(bo)。

超聲波換(huan)能(neng)器主要包括外殼、聲窗(chuang)（匹配層）、壓電(dian)陶(tao)瓷圓盤換(huan)能(neng)器、背襯(chen)、引出(chu)電(dian)纜、接l收器等(deng)幾大部(bu)分構(gou)成。

其中，壓(ya)電(dian)陶瓷圓盤(pan)換(huan)(huan)(huan)能(neng)器起到的(de)作(zuo)用和(he)一般的(de)換(huan)(huan)(huan)能(neng)器相同，主(zhu)要用于發射并接(jie)(jie)受超聲波(bo);而在壓(ya)電(dian)陶瓷圓盤(pan)換(huan)(huan)(huan)能(neng)器的(de)上面(mian)是接(jie)(jie)l收(shou)(shou)器，主(zhu)要由(you)引(yin)出電(dian)纜(lan)、換(huan)(huan)(huan)能(neng)器、金屬圓環和(he)橡膠墊圈(quan)組成，用作(zuo)超聲波(bo)接(jie)(jie)l收(shou)(shou)器，接(jie)(jie)受壓(ya)電(dian)陶瓷圓盤(pan)換(huan)(huan)(huan)能(neng)器頻帶外產(chan)生的(de)多l普(pu)勒(le)回撥(bo)信(xin)號。

超(chao)聲(sheng)波(bo)(bo)換(huan)(huan)能(neng)器(qi)(qi)(qi)即是諧(xie)振于(yu)超(chao)聲(sheng)頻率(lv)(lv)的(de)壓電陶瓷，由材料(liao)的(de)壓電效應將電信(xin)號轉(zhuan)(zhuan)換(huan)(huan)為(wei)機(ji)械振動(dong)。超(chao)聲(sheng)波(bo)(bo)換(huan)(huan)能(neng)器(qi)(qi)(qi)是一(yi)種能(neng)量轉(zhuan)(zhuan)換(huan)(huan)器(qi)(qi)(qi)件(jian)，它的(de)功能(neng)是將輸入(ru)的(de)電功率(lv)(lv)轉(zhuan)(zhuan)換(huan)(huan)成機(ji)械功率(lv)(lv)（即超(chao)聲(sheng)波(bo)(bo)）再傳遞出去，面它自(zi)身消耗很(hen)少的(de)一(yi)部分功率(lv)(lv)。 超(chao)聲(sheng)波(bo)(bo)換(huan)(huan)能(neng)器(qi)(qi)(qi)的(de)種類(lei)：可分為(wei)壓電換(huan)(huan)能(neng)器(qi)(qi)(qi)、夾心換(huan)(huan)能(neng)器(qi)(qi)(qi)、柱型(xing)換(huan)(huan)能(neng)器(qi)(qi)(qi)、倒喇叭(ba)型(xing)換(huan)(huan)能(neng)器(qi)(qi)(qi)等(deng)等(deng)。

工作原理

超(chao)聲(sheng)(sheng)換(huan)能(neng)(neng)(neng)(neng)器(qi)(qi)即是(shi)諧振(zhen)于超(chao)聲(sheng)(sheng)頻率的(de)(de)(de)壓電(dian)(dian)(dian)(dian)陶瓷，由材料的(de)(de)(de)壓電(dian)(dian)(dian)(dian)效應(ying)將(jiang)電(dian)(dian)(dian)(dian)信(xin)號轉換(huan)為機械(xie)(xie)振(zhen)動。超(chao)聲(sheng)(sheng)換(huan)能(neng)(neng)(neng)(neng)器(qi)(qi)（超(chao)聲(sheng)(sheng)探頭）的(de)(de)(de)工作原理(li)大體是(shi)相(xiang)同的(de)(de)(de)，其內(nei)部(bu)通(tong)(tong)常(chang)都(dou)包含一個(ge)電(dian)(dian)(dian)(dian)的(de)(de)(de)儲(chu)能(neng)(neng)(neng)(neng)元件(jian)和一個(ge)機械(xie)(xie)振(zhen)動系統。當換(huan)能(neng)(neng)(neng)(neng)器(qi)(qi)用(yong)作發l射(she)器(qi)(qi)時(shi)，從激勵電(dian)(dian)(dian)(dian)源送來的(de)(de)(de)電(dian)(dian)(dian)(dian)振(zhen)蕩(dang)信(xin)號將(jiang)引(yin)起換(huan)能(neng)(neng)(neng)(neng)器(qi)(qi)中電(dian)(dian)(dian)(dian)儲(chu)能(neng)(neng)(neng)(neng)元件(jian)中電(dian)(dian)(dian)(dian)場(chang)或磁場(chang)的(de)(de)(de)變化(hua)，這種變化(hua)通(tong)(tong)過(guo)某種效應(ying)對換(huan)能(neng)(neng)(neng)(neng)器(qi)(qi)的(de)(de)(de)機械(xie)(xie)振(zhen)動系統產生(sheng)(sheng)一個(ge)推動力(li)，使(shi)其進入(ru)振(zhen)動狀態，從而推動與換(huan)能(neng)(neng)(neng)(neng)器(qi)(qi)機械(xie)(xie)振(zhen)動系統相(xiang)接(jie)(jie)觸的(de)(de)(de)介(jie)質發生(sheng)(sheng)振(zhen)動，向介(jie)質中輻射(she)聲(sheng)(sheng)波(bo)。接(jie)(jie)收聲(sheng)(sheng)波(bo)的(de)(de)(de)過(guo)程(cheng)正好與此相(xiang)反，外來聲(sheng)(sheng)波(bo)作用(yong)在換(huan)能(neng)(neng)(neng)(neng)器(qi)(qi)的(de)(de)(de)振(zhen)動面上，從而使(shi)換(huan)能(neng)(neng)(neng)(neng)器(qi)(qi)的(de)(de)(de)機械(xie)(xie)振(zhen)動系統發生(sheng)(sheng)振(zhen)動，借助(zhu)某種物理(li)效應(ying)，引(yin)起換(huan)能(neng)(neng)(neng)(neng)器(qi)(qi)儲(chu)能(neng)(neng)(neng)(neng)元件(jian)中的(de)(de)(de)電(dian)(dian)(dian)(dian)場(chang)或磁場(chang)發生(sheng)(sheng)相(xiang)應(ying)的(de)(de)(de)變化(hua)，從而引(yin)起換(huan)能(neng)(neng)(neng)(neng)器(qi)(qi)的(de)(de)(de)電(dian)(dian)(dian)(dian)輸出端產生(sheng)(sheng)一個(ge)相(xiang)應(ying)于聲(sheng)(sheng)信(xin)號的(de)(de)(de)電(dian)(dian)(dian)(dian)壓和電(dian)(dian)(dian)(dian)流。