安(an)全閥在(zai)(zai)線(xian)(xian)校驗(yan)技(ji)術(shu)(shu)的(de)技(ji)術(shu)(shu)依(yi)據根據對彈(dan)簧安(an)全閥開啟(qi)動作(zuo)特(te)(te)性的(de)分析，可以得出：在(zai)(zai)外(wai)(wai)加(jia)(jia)(jia)力(li)(li)(li)FW的(de)作(zuo)用下，一個安(an)全閥從關(guan)閉(bi)到(dao)開啟(qi)，再由開啟(qi)到(dao)關(guan)閉(bi)的(de)全過程中(zhong)，外(wai)(wai)附加(jia)(jia)(jia)力(li)(li)(li)FW的(de)變化規律(lv)可見。熱態（在(zai)(zai)線(xian)(xian)）測(ce)試(shi)時(shi)的(de)過程曲線(xian)(xian)，當(dang)附加(jia)(jia)(jia)力(li)(li)(li)從零逐(zhu)步增(zeng)(zeng)加(jia)(jia)(jia)，與(yu)內(nei)(nei)壓力(li)(li)(li)PL×S之和(he)正好為彈(dan)簧預緊力(li)(li)(li)時(shi)，閥門微(wei)啟(qi)，增(zeng)(zeng)大了介質作(zuo)用面(mian)積Ｓ，使得用來克服彈(dan)簧預緊力(li)(li)(li)的(de)內(nei)(nei)壓作(zuo)用力(li)(li)(li)急(ji)劇(ju)增(zeng)(zeng)大，其結果在(zai)(zai)瞬(shun)間減(jian)小了外(wai)(wai)附加(jia)(jia)(jia)力(li)(li)(li)。從而出現(xian)(xian)特(te)(te)征峰Ａ。當(dang)外(wai)(wai)附加(jia)(jia)(jia)力(li)(li)(li)逐(zhu)漸減(jian)小而達(da)到(dao)關(guan)閉(bi)點時(shi)，由于介質作(zuo)用面(mian)積忽(hu)然減(jian)小，為保持力(li)(li)(li)的(de)平衡關(guan)系，此時(shi)，外(wai)(wai)附加(jia)(jia)(jia)力(li)(li)(li)會出現(xian)(xian)瞬(shun)間回升現(xian)(xian)象，即(ji)第(di)二個特(te)(te)征峰點Ｂ。上述兩個特(te)(te)征峰點Ａ和(he)Ｂ是在(zai)(zai)線(xian)(xian)條件(jian)下檢測(ce)安(an)全閥整定(ding)壓力(li)(li)(li)、回座壓力(li)(li)(li)的(de)技(ji)術(shu)(shu)依(yi)據。它(ta)應(ying)垂直安(an)裝(zhuang)在(zai)(zai)鍋商、集箱的(de)比較高位置。正規安(an)全閥設(she)備

八、安(an)(an)(an)全閥(fa)、壓(ya)(ya)(ya)(ya)力(li)表屬下列情況(kuang)之一的(de)(de)，不(bu)得使用：1.無產(chan)品出廠檢(jian)(jian)(jian)驗(yan)(yan)(yan)合(he)格證和(he)銘牌的(de)(de)；2.性能(neng)不(bu)符合(he)有(you)關要求的(de)(de)；3.逾期不(bu)檢(jian)(jian)(jian)查(cha)、不(bu)校驗(yan)(yan)(yan)或(huo)校驗(yan)(yan)(yan)不(bu)合(he)格的(de)(de)；4.檢(jian)(jian)(jian)驗(yan)(yan)(yan)判(pan)廢的(de)(de)。九(jiu)、安(an)(an)(an)全閥(fa)、壓(ya)(ya)(ya)(ya)力(li)表經(jing)檢(jian)(jian)(jian)驗(yan)(yan)(yan)或(huo)試(shi)驗(yan)(yan)(yan)鉛封后，除專業人(ren)員外，其它任何人(ren)員不(bu)準隨意(yi)拆卸。操作(zuo)(zuo)人(ren)員應加強(qiang)維(wei)護保(bao)養，保(bao)持(chi)其靈敏可靠，發現有(you)異常現象，要立即停(ting)機(ji)并報告單位(wei)領導(dao)或(huo)技術人(ren)員和(he)安(an)(an)(an)全監察(cha)處、設備能(neng)源處、計(ji)量(liang)處，以便及時處理。安(an)(an)(an)全監察(cha)處對安(an)(an)(an)全閥(fa)、壓(ya)(ya)(ya)(ya)力(li)表定期檢(jian)(jian)(jian)驗(yan)(yan)(yan)工(gong)(gong)作(zuo)(zuo)實(shi)行監督檢(jian)(jian)(jian)查(cha)貴州安(an)(an)(an)全閥(fa)檢(jian)(jian)(jian)驗(yan)(yan)(yan)中(zhong)心升壓(ya)(ya)(ya)(ya)動作(zuo)(zuo)（在開啟壓(ya)(ya)(ya)(ya)力(li)下立即動作(zuo)(zuo)）、降壓(ya)(ya)(ya)(ya)回(hui)座(zuo)、再保(bao)壓(ya)(ya)(ya)(ya)（回(hui)座(zuo)后在工(gong)(gong)作(zuo)(zuo)壓(ya)(ya)(ya)(ya)力(li)下保(bao)持(chi)3min無泄漏(lou)）。

8.2.1純機械彈簧式安(an)(an)(an)(an)(an)全(quan)(quan)(quan)閥(fa)(fa)(fa)及碟形彈簧安(an)(an)(an)(an)(an)全(quan)(quan)(quan)閥(fa)(fa)(fa)可使用安(an)(an)(an)(an)(an)全(quan)(quan)(quan)閥(fa)(fa)(fa)在線(xian)(xian)(xian)(xian)定(ding)壓(ya)(ya)(ya)(ya)儀進(jin)(jin)行(xing)校(xiao)驗(yan)調(diao)整(zheng)。校(xiao)驗(yan)調(diao)整(zheng)可以(yi)在機組啟動或(huo)帶(dai)負荷(he)運行(xing)的(de)過程(cheng)中（一(yi)般在60％～80％額定(ding)壓(ya)(ya)(ya)(ya)力(li)下）進(jin)(jin)行(xing)。8.2.2經(jing)(jing)安(an)(an)(an)(an)(an)全(quan)(quan)(quan)閥(fa)(fa)(fa)在線(xian)(xian)(xian)(xian)定(ding)壓(ya)(ya)(ya)(ya)儀調(diao)整(zheng)后(hou)的(de)安(an)(an)(an)(an)(an)全(quan)(quan)(quan)閥(fa)(fa)(fa)，應(ying)對比較低起跳值(zhi)的(de)安(an)(an)(an)(an)(an)全(quan)(quan)(quan)閥(fa)(fa)(fa)進(jin)(jin)行(xing)實際起跳復核(he)，經(jing)(jing)復核(he)，誤(wu)差值(zhi)在表5規定(ding)的(de)整(zheng)定(ding)壓(ya)(ya)(ya)(ya)力(li)偏(pian)差以(yi)內時，其他使用安(an)(an)(an)(an)(an)全(quan)(quan)(quan)閥(fa)(fa)(fa)在線(xian)(xian)(xian)(xian)定(ding)壓(ya)(ya)(ya)(ya)儀校(xiao)驗(yan)的(de)安(an)(an)(an)(an)(an)全(quan)(quan)(quan)閥(fa)(fa)(fa)可不必做實跳試(shi)驗(yan)。8.2.3使用的(de)安(an)(an)(an)(an)(an)全(quan)(quan)(quan)閥(fa)(fa)(fa)在線(xian)(xian)(xian)(xian)定(ding)壓(ya)(ya)(ya)(ya)儀應(ying)保證與實跳值(zhi)的(de)誤(wu)差在允許的(de)范(fan)圍內，并(bing)具有數據(ju)自動記錄和處理功能，避免人為判斷(duan)因素帶(dai)來的(de)誤(wu)差。安(an)(an)(an)(an)(an)全(quan)(quan)(quan)閥(fa)(fa)(fa)定(ding)壓(ya)(ya)(ya)(ya)儀與被測安(an)(an)(an)(an)(an)全(quan)(quan)(quan)閥(fa)(fa)(fa)應(ying)具有一(yi)定(ding)的(de)安(an)(an)(an)(an)(an)全(quan)(quan)(quan)距(ju)離。8.2.4安(an)(an)(an)(an)(an)全(quan)(quan)(quan)閥(fa)(fa)(fa)在線(xian)(xian)(xian)(xian)定(ding)壓(ya)(ya)(ya)(ya)儀所配的(de)壓(ya)(ya)(ya)(ya)力(li)傳(chuan)感(gan)器(qi)和力(li)值(zhi)傳(chuan)感(gan)器(qi)應(ying)定(ding)期(qi)校(xiao)驗(yan)。8.3在役電站(zhan)鍋爐安(an)(an)(an)(an)(an)全(quan)(quan)(quan)閥(fa)(fa)(fa)每年至(zhi)少(shao)(shao)應(ying)校(xiao)驗(yan)一(yi)次。每一(yi)個小修周(zhou)期(qi)應(ying)進(jin)(jin)行(xing)檢查，必要時應(ying)進(jin)(jin)行(xing)校(xiao)驗(yan)或(huo)排(pai)放試(shi)驗(yan)。各(ge)類(lei)壓(ya)(ya)(ya)(ya)力(li)容器(qi)的(de)安(an)(an)(an)(an)(an)全(quan)(quan)(quan)閥(fa)(fa)(fa)每年應(ying)至(zhi)少(shao)(shao)進(jin)(jin)行(xing)一(yi)次排(pai)放試(shi)驗(yan)或(huo)在線(xian)(xian)(xian)(xian)校(xiao)驗(yan)。8.4安(an)(an)(an)(an)(an)全(quan)(quan)(quan)閥(fa)(fa)(fa)一(yi)經(jing)(jing)校(xiao)驗(yan)合(he)格就應(ying)加(jia)鎖或(huo)加(jia)鉛封，并(bing)在鍋爐技術(shu)登錄簿或(huo)壓(ya)(ya)(ya)(ya)力(li)容器(qi)技術(shu)檔案中記錄。

貴(gui)州黔和(he)(he)易成閥(fa)(fa)門檢(jian)測技(ji)術(shu)服(fu)務有限公司推(tui)薦：安(an)(an)(an)全(quan)(quan)閥(fa)(fa)容器(qi)內(nei)(nei)有氣、液(ye)兩相物(wu)料(liao)時(shi)安(an)(an)(an)全(quan)(quan)閥(fa)(fa)應(ying)(ying)(ying)(ying)裝(zhuang)(zhuang)在(zai)氣相部分。安(an)(an)(an)全(quan)(quan)閥(fa)(fa)用于泄(xie)(xie)放可(ke)燃(ran)液(ye)體(ti)時(shi)，安(an)(an)(an)全(quan)(quan)閥(fa)(fa)的出(chu)口(kou)(kou)(kou)應(ying)(ying)(ying)(ying)與事故(gu)貯(zhu)罐相連(lian)。當泄(xie)(xie)放的物(wu)料(liao)是(shi)高(gao)溫可(ke)燃(ran)物(wu)時(shi)，其接收容器(qi)應(ying)(ying)(ying)(ying)有相應(ying)(ying)(ying)(ying)的防(fang)護(hu)設(she)(she)施。一(yi)般安(an)(an)(an)全(quan)(quan)閥(fa)(fa)可(ke)就地放空，放空口(kou)(kou)(kou)應(ying)(ying)(ying)(ying)高(gao)出(chu)操(cao)作人員1米(mi)（m）以(yi)上(shang)且不(bu)(bu)應(ying)(ying)(ying)(ying)朝向(xiang)15米(mi)（m）以(yi)內(nei)(nei)的明火(huo)地點(dian)、散發(fa)火(huo)花地點(dian)及(ji)高(gao)溫設(she)(she)備。室內(nei)(nei)設(she)(she)備、容器(qi)的安(an)(an)(an)全(quan)(quan)閥(fa)(fa)放空口(kou)(kou)(kou)應(ying)(ying)(ying)(ying)引出(chu)房頂，并高(gao)出(chu)房頂2米(mi)（m）以(yi)上(shang)。當安(an)(an)(an)全(quan)(quan)閥(fa)(fa)入(ru)口(kou)(kou)(kou)有隔斷閥(fa)(fa)時(shi)，隔斷閥(fa)(fa)應(ying)(ying)(ying)(ying)處于常開狀態，并要加以(yi)鉛(qian)封，以(yi)免出(chu)錯。安(an)(an)(an)全(quan)(quan)閥(fa)(fa)與鍋(guo)爐或壓力容器(qi)之間的連(lian)接管和(he)(he)管件的通孔，其截(jie)(jie)面(mian)積(ji)不(bu)(bu)得小(xiao)(xiao)于安(an)(an)(an)全(quan)(quan)閥(fa)(fa)的進(jin)(jin)口(kou)(kou)(kou)截(jie)(jie)面(mian)積(ji)；如果幾(ji)個(ge)安(an)(an)(an)全(quan)(quan)閥(fa)(fa)共(gong)用一(yi)個(ge)進(jin)(jin)口(kou)(kou)(kou)管道(dao)時(shi)，進(jin)(jin)口(kou)(kou)(kou)管道(dao)的流通截(jie)(jie)面(mian)積(ji)不(bu)(bu)小(xiao)(xiao)于安(an)(an)(an)全(quan)(quan)閥(fa)(fa)的進(jin)(jin)口(kou)(kou)(kou)截(jie)(jie)面(mian)積(ji)之和(he)(he)。安(an)(an)(an)全(quan)(quan)閥(fa)(fa)的出(chu)口(kou)(kou)(kou)應(ying)(ying)(ying)(ying)無阻(zu)力，避免背壓現(xian)象，若裝(zhuang)(zhuang)設(she)(she)排泄(xie)(xie)管；

彈(dan)(dan)簧式(shi)安(an)(an)全閥(fa)(fa)的(de)(de)優(you)缺點：彈(dan)(dan)簧式(shi)安(an)(an)全閥(fa)(fa)是(shi)(shi)利(li)用(yong)(yong)壓(ya)(ya)(ya)縮(suo)彈(dan)(dan)簧的(de)(de)力(li)來平衡作用(yong)(yong)在閥(fa)(fa)瓣上(shang)的(de)(de)力(li)。螺旋(xuan)圈形彈(dan)(dan)簧的(de)(de)壓(ya)(ya)(ya)縮(suo)量可以(yi)(yi)通過(guo)轉動(dong)它上(shang)面的(de)(de)調(diao)整螺母來調(diao)節，利(li)用(yong)(yong)這(zhe)種結構(gou)就可以(yi)(yi)根據需要校正安(an)(an)全閥(fa)(fa)的(de)(de)開(kai)啟(整定)壓(ya)(ya)(ya)力(li)。優(you)點：彈(dan)(dan)簧式(shi)安(an)(an)全閥(fa)(fa)結構(gou)輕便緊湊(cou)，靈敏(min)度(du)也比較高(gao)，安(an)(an)裝位置不受限制，而(er)且因為對(dui)振動(dong)的(de)(de)敏(min)感性小，所以(yi)(yi)可用(yong)(yong)于移動(dong)式(shi)的(de)(de)壓(ya)(ya)(ya)力(li)容器上(shang)。缺點：所加的(de)(de)載荷會隨著(zhu)閥(fa)(fa)的(de)(de)開(kai)啟而(er)發生變化，即隨著(zhu)閥(fa)(fa)瓣的(de)(de)升高(gao)，彈(dan)(dan)簧的(de)(de)壓(ya)(ya)(ya)縮(suo)量增(zeng)(zeng)大(da)，作用(yong)(yong)在閥(fa)(fa)瓣上(shang)的(de)(de)力(li)也跟著(zhu)增(zeng)(zeng)加。這(zhe)對(dui)安(an)(an)全閥(fa)(fa)的(de)(de)迅速開(kai)啟是(shi)(shi)不利(li)的(de)(de)。另外，閥(fa)(fa)上(shang)的(de)(de)彈(dan)(dan)簧會由于長期受高(gao)溫(wen)的(de)(de)影(ying)響而(er)使(shi)彈(dan)(dan)力(li)減(jian)小。用(yong)(yong)于溫(wen)度(du)較高(gao)的(de)(de)容器上(shang)時，常(chang)常(chang)要考慮彈(dan)(dan)簧的(de)(de)隔熱(re)或散熱(re)問題，從而(er)使(shi)結構(gou)變得復(fu)雜起來。安(an)(an)全閥(fa)(fa)排放管(guan)要固定，以(yi)(yi)免使(shi)安(an)(an)全閥(fa)(fa)產(chan)生過(guo)大(da)的(de)(de)附加應力(li)或引起振動(dong)。黔東(dong)南安(an)(an)全閥(fa)(fa)年度(du)校驗

安全(quan)閥(fa)應安裝在(zai)污垢，鐵銹(xiu)和碎屑不會聚(ju)集的地方(fang)。正規安全(quan)閥(fa)設備

校(xiao)(xiao)(xiao)(xiao)驗(yan)(yan)(yan)(yan)(yan)人員(yuan)必須(xu)經相(xiang)關知識和校(xiao)(xiao)(xiao)(xiao)驗(yan)(yan)(yan)(yan)(yan)技能(neng)培訓，掌(zhang)握(wo)安(an)(an)全(quan)閥(fa)的基本知識，熟悉安(an)(an)全(quan)閥(fa)校(xiao)(xiao)(xiao)(xiao)驗(yan)(yan)(yan)(yan)(yan)方面的有關規程和標(biao)準。校(xiao)(xiao)(xiao)(xiao)驗(yan)(yan)(yan)(yan)(yan)人員(yuan)能(neng)熟統地使用校(xiao)(xiao)(xiao)(xiao)驗(yan)(yan)(yan)(yan)(yan)裝置、儀(yi)器、真，能(neng)完成安(an)(an)全(quan)間的實際(ji)校(xiao)(xiao)(xiao)(xiao)驗(yan)(yan)(yan)(yan)(yan)操作(zuo)(zuo)。）校(xiao)(xiao)(xiao)(xiao)驗(yan)(yan)(yan)(yan)(yan)時必須(xu)有詳(xiang)細記(ji)求，秘驗(yan)(yan)(yan)(yan)(yan)合格(ge)后，應(ying)(ying)(ying)該(gai)進行鉛封(feng)并(bing)且出(chu)具(ju)校(xiao)(xiao)(xiao)(xiao)驗(yan)(yan)(yan)(yan)(yan)報(bao)告。）校(xiao)(xiao)(xiao)(xiao)驗(yan)(yan)(yan)(yan)(yan)機構的安(an)(an)全(quan)閥(fa)校(xiao)(xiao)(xiao)(xiao)驗(yan)(yan)(yan)(yan)(yan)工作(zuo)(zuo)，應(ying)(ying)(ying)該(gai)接受質量技術(shu)監(jian)督部(bu)門的監(jian)督檢查校(xiao)(xiao)(xiao)(xiao)驗(yan)(yan)(yan)(yan)(yan)設備）安(an)(an)全(quan)間校(xiao)(xiao)(xiao)(xiao)驗(yan)(yan)(yan)(yan)(yan)裝置由校(xiao)(xiao)(xiao)(xiao)驗(yan)(yan)(yan)(yan)(yan)臺(tai)、氣(qi)(qi)(qi)源(yuan)(yuan)和管路(lu)等組成。可配(pei)(pei)備空氣(qi)(qi)(qi)壓縮機，也可用著手氣(qi)(qi)(qi)題并(bing)聯或其(qi)他(ta)形代提供氣(qi)(qi)(qi)源(yuan)(yuan)。應(ying)(ying)(ying)該(gai)配(pei)(pei)有一定(ding)容積的儲(chu)氣(qi)(qi)(qi)罐，儲(chu)氣(qi)(qi)(qi)能(neng)的容積應(ying)(ying)(ying)當與校(xiao)(xiao)(xiao)(xiao)驗(yan)(yan)(yan)(yan)(yan)安(an)(an)全(quan)間的用氣(qi)(qi)(qi)型相(xiang)適，保(bao)出(chu)氣(qi)(qi)(qi)源(yuan)(yuan)穩(wen)定(ding)。如(ru)果氣(qi)(qi)(qi)海床方高于*整氣(qi)(qi)(qi)能(neng)的設計壓力(li)時，應(ying)(ying)(ying)該(gai)在氣(qi)(qi)(qi)源(yuan)(yuan)與貯(zhu)氣(qi)(qi)(qi)蓋之間裝正規安(an)(an)全(quan)閥(fa)設備

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