大(da)(da)口13m錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)封(feng)頭(tou)在與圓(yuan)(yuan)筒或接管(guan)連(lian)接處(chu)因(yin)形狀突變(bian)(bian)產(chan)生(sheng)的(de)不(bu)連(lian)續(xu)應(ying)力(li)較(jiao)大(da)(da)，因(yin)此(ci)力(li)學性(xing)能(neng)較(jiao)差(cha)，大(da)(da)型錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)封(feng)頭(tou)價格，其(qi)可以使介質(zhi)通過(guo)時均(jun)勻改變(bian)(bian)速(su)度，便于(yu)卸(xie)凈粘稠液體(ti)(ti)和含固(gu)(gu)體(ti)(ti)顆粒物料(liao)。  為(wei)(wei)了降低(di)不(bu)連(lian)續(xu)應(ying)力(li)，該大(da)(da)口13m錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)封(feng)頭(tou)的(de)大(da)(da)端或小端采用(yong)(yong)圓(yuan)(yuan)弧過(guo)渡的(de)有折邊(bian)結(jie)構或局部(bu)(bu)增(zeng)厚(hou)結(jie)構。大(da)(da)口13m錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)封(feng)頭(tou)的(de)錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)和圓(yuan)(yuan)筒部(bu)(bu)分(fen)連(lian)接處(chu)，由于(yu)幾何不(bu)連(lian)續(xu)性(xing)，曲率半徑(jing)(jing)突變(bian)(bian)，因(yin)此(ci)該處(chu)會產(chan)生(sheng)較(jiao)大(da)(da)的(de)橫(heng)向推力(li)，引起較(jiao)大(da)(da)邊(bian)緣應(ying)力(li)，容易(yi)發(fa)生(sheng)彎曲，因(yin)此(ci)需要加強。  該大(da)(da)口13m錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)封(feng)頭(tou)錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)的(de)主體(ti)(ti)部(bu)(bu)分(fen)在內壓作(zuo)用(yong)(yong)下，比較(jiao)大(da)(da)薄膜(mo)(mo)應(ying)力(li)發(fa)生(sheng)在大(da)(da)端，可以使介質(zhi)通過(guo)時均(jun)勻改變(bian)(bian)速(su)度，便于(yu)卸(xie)凈粘稠液體(ti)(ti)和含固(gu)(gu)體(ti)(ti)顆粒物料(liao)，是殼體(ti)(ti)表(biao)面(mian)為(wei)(wei)錐(zhui)(zhui)(zhui)(zhui)(zhui)面(mian)的(de)封(feng)頭(tou)。 大(da)(da)口13m錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)封(feng)頭(tou)的(de)材質(zhi)：  制(zhi)造錐(zhui)(zhui)(zhui)(zhui)(zhui)形封(feng)頭(tou)的(de)材質(zhi)可為(wei)(wei)碳鋼(gang)(gang)、低(di)合(he)金鋼(gang)(gang)、復合(he)板、不(bu)銹鋼(gang)(gang)以及銅、鋁(lv)、鈦等有色金屬，品種較(jiao)多。 大(da)(da)口13m錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)封(feng)頭(tou)的(de)用(yong)(yong)途：  變(bian)(bian)徑(jing)(jing)錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)封(feng)頭(tou)供應(ying)商(shang)：該變(bian)(bian)徑(jing)(jing)錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)封(feng)頭(tou)錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)的(de)主體(ti)(ti)部(bu)(bu)分(fen)在內壓作(zuo)用(yong)(yong)下，比較(jiao)大(da)(da)薄膜(mo)(mo)應(ying)力(li)發(fa)生(sheng)在大(da)(da)端。

因(yin)(yin)為折(zhe)(zhe)邊(bian)(bian)(bian)(bian)后的(de)(de)(de)焊(han)接(jie)(jie)(jie)是直邊(bian)(bian)(bian)(bian)的(de)(de)(de)對(dui)接(jie)(jie)(jie)，在折(zhe)(zhe)邊(bian)(bian)(bian)(bian)處(chu)應力(li)(li)(li)(li)(li)分布相對(dui)比較好，應力(li)(li)(li)(li)(li)水平(ping)低。無(wu)折(zhe)(zhe)邊(bian)(bian)(bian)(bian)錐(zhui)(zhui)(zhui)(zhui)(zhui)形(xing)(xing)(xing)(xing)(xing)封頭(tou)(tou)也有直邊(bian)(bian)(bian)(bian)對(dui)接(jie)(jie)(jie)部(bu)分，一(yi)般(ban)(ban)取25mm或40mm，無(wu)折(zhe)(zhe)邊(bian)(bian)(bian)(bian)錐(zhui)(zhui)(zhui)(zhui)(zhui)形(xing)(xing)(xing)(xing)(xing)封頭(tou)(tou)就是一(yi)段圓錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)(ti)，由(you)于錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)(ti)與筒體(ti)(ti)(ti)直接(jie)(jie)(jie)連(lian)(lian)接(jie)(jie)(jie)，連(lian)(lian)接(jie)(jie)(jie)處(chu)殼體(ti)(ti)(ti)形(xing)(xing)(xing)(xing)(xing)狀突變而(er)不(bu)連(lian)(lian)續(xu)，產生較大(da)的(de)(de)(de)局部(bu)應力(li)(li)(li)(li)(li)，這一(yi)應力(li)(li)(li)(li)(li)的(de)(de)(de)取決于錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)(ti)半頂(ding)(ding)(ding)角(jiao)(jiao)α的(de)(de)(de)大(da)小(xiao)(xiao)，α越大(da)，應力(li)(li)(li)(li)(li)越大(da)；反(fan)之則(ze)小(xiao)(xiao)。《設計(ji)(ji)規(gui)定(ding)(ding)》對(dui)無(wu)折(zhe)(zhe)邊(bian)(bian)(bian)(bian)錐(zhui)(zhui)(zhui)(zhui)(zhui)形(xing)(xing)(xing)(xing)(xing)封頭(tou)(tou)作了如下三(san)點限制： 　　1、無(wu)折(zhe)(zhe)邊(bian)(bian)(bian)(bian)錐(zhui)(zhui)(zhui)(zhui)(zhui)形(xing)(xing)(xing)(xing)(xing)封頭(tou)(tou)只適(shi)用于錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)(ti)半頂(ding)(ding)(ding)角(jiao)(jiao)α≤30°的(de)(de)(de)情況； 　　2、當(dang)α30°時(shi)則(ze)須(xu)采(cai)用折(zhe)(zhe)邊(bian)(bian)(bian)(bian)錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)(ti)的(de)(de)(de)型式(shi)，否則(ze)必(bi)須(xu)用應力(li)(li)(li)(li)(li)分析方(fang)法進行計(ji)(ji)算； 　　3、無(wu)折(zhe)(zhe)邊(bian)(bian)(bian)(bian)錐(zhui)(zhui)(zhui)(zhui)(zhui)形(xing)(xing)(xing)(xing)(xing)封頭(tou)(tou)連(lian)(lian)接(jie)(jie)(jie)處(chu)的(de)(de)(de)對(dui)接(jie)(jie)(jie)焊(han)縫(feng)必(bi)須(xu)采(cai)用全(quan)焊(han)透結構(gou)。 　　折(zhe)(zhe)邊(bian)(bian)(bian)(bian)錐(zhui)(zhui)(zhui)(zhui)(zhui)形(xing)(xing)(xing)(xing)(xing)封頭(tou)(tou)包括圓錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)(ti)、折(zhe)(zhe)邊(bian)(bian)(bian)(bian)和圓筒體(ti)(ti)(ti)三(san)個部(bu)分，大(da)型錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)(ti)封頭(tou)(tou)，多用于錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)(ti)半頂(ding)(ding)(ding)角(jiao)(jiao)α30°的(de)(de)(de)場合。因(yin)(yin)α越大(da)錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)(ti)應力(li)(li)(li)(li)(li)越大(da)，所(suo)需壁厚(hou)(hou)也越大(da)，加工就越困難(nan)。所(suo)以，除非特殊需要(yao)，帶折(zhe)(zhe)邊(bian)(bian)(bian)(bian)錐(zhui)(zhui)(zhui)(zhui)(zhui)形(xing)(xing)(xing)(xing)(xing)封頭(tou)(tou)的(de)(de)(de)半頂(ding)(ding)(ding)角(jiao)(jiao)一(yi)般(ban)(ban)不(bu)大(da)于45°。此(ci)外，折(zhe)(zhe)邊(bian)(bian)(bian)(bian)的(de)(de)(de)內(nei)(nei)半徑r越大(da)，封頭(tou)(tou)受力(li)(li)(li)(li)(li)狀態(tai)越好，因(yin)(yin)此(ci)《設計(ji)(ji)規(gui)定(ding)(ding)》作出了如下限制：折(zhe)(zhe)邊(bian)(bian)(bian)(bian)內(nei)(nei)半徑r應不(bu)小(xiao)(xiao)于錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)(ti)大(da)端內(nei)(nei)徑DN的(de)(de)(de)10%及錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)(ti)厚(hou)(hou)度(du)的(de)(de)(de)3倍。 　　無(wu)折(zhe)(zhe)邊(bian)(bian)(bian)(bian)錐(zhui)(zhui)(zhui)(zhui)(zhui)形(xing)(xing)(xing)(xing)(xing)封頭(tou)(tou)一(yi)般(ban)(ban)應用于容器兩(liang)端，而(er)折(zhe)(zhe)邊(bian)(bian)(bian)(bian)錐(zhui)(zhui)(zhui)(zhui)(zhui)形(xing)(xing)(xing)(xing)(xing)封頭(tou)(tou)一(yi)般(ban)(ban)焊(han)接(jie)(jie)(jie)于兩(liang)公稱(cheng)直徑不(bu)同(tong)的(de)(de)(de)筒體(ti)(ti)(ti)中(zhong)間，大(da)型錐(zhui)(zhui)(zhui)(zhui)(zhui)體(ti)(ti)(ti)封頭(tou)(tou)定(ding)(ding)做(zuo)，使兩(liang)公稱(cheng)直徑不(bu)同(tong)的(de)(de)(de)筒體(ti)(ti)(ti)連(lian)(lian)為一(yi)體(ti)(ti)(ti)！因(yin)(yin)為折(zhe)(zhe)邊(bian)(bian)(bian)(bian)后的(de)(de)(de)焊(han)接(jie)(jie)(jie)是直邊(bian)(bian)(bian)(bian)的(de)(de)(de)對(dui)接(jie)(jie)(jie)'，折(zhe)(zhe)邊(bian)(bian)(bian)(bian)錐(zhui)(zhui)(zhui)(zhui)(zhui)形(xing)(xing)(xing)(xing)(xing)封頭(tou)(tou)分為單(dan)折(zhe)(zhe)邊(bian)(bian)(bian)(bian)錐(zhui)(zhui)(zhui)(zhui)(zhui)形(xing)(xing)(xing)(xing)(xing)封頭(tou)(tou)和雙折(zhe)(zhe)邊(bian)(bian)(bian)(bian)錐(zhui)(zhui)(zhui)(zhui)(zhui)形(xing)(xing)(xing)(xing)(xing)封頭(tou)(tou)，單(dan)折(zhe)(zhe)邊(bian)(bian)(bian)(bian)錐(zhui)(zhui)(zhui)(zhui)(zhui)形(xing)(xing)(xing)(xing)(xing)封頭(tou)(tou)有一(yi)邊(bian)(bian)(bian)(bian)并(bing)非直邊(bian)(bian)(bian)(bian)對(dui)接(jie)(jie)(jie)，與其(qi)相對(dui)接(jie)(jie)(jie)的(de)(de)(de)筒節或其(qi)它殼體(ti)(ti)(ti)是有一(yi)定(ding)(ding)角(jiao)(jiao)度(du)的(de)(de)(de)！

   錐(zhui)形(xing)封(feng)頭(tou)(tou)有(you)(you)兩種(zhong)形(xing)式(shi)，一(yi)(yi)種(zhong)是(shi)無折邊錐(zhui)形(xing)封(feng)頭(tou)(tou)，大型錐(zhui)體(ti)(ti)(ti)封(feng)頭(tou)(tou)加工廠，一(yi)(yi)般用于(yu)角(jiao)度小(xiao)于(yu)等(deng)于(yu)30℃的場合；另一(yi)(yi)種(zhong)是(shi)與筒體(ti)(ti)(ti)連接處(chu)有(you)(you)一(yi)(yi)過(guo)渡圓弧和(he)(he)(he)一(yi)(yi)個圓柱直(zhi)(zhi)邊段的折邊錐(zhui)形(xing)風土(tu)，就(jiu)強(qiang)度而(er)(er)論(lun)，錐(zhui)形(xing)封(feng)頭(tou)(tou)的結(jie)構并不理(li)想(xiang)(xiang)，但是(shi)封(feng)頭(tou)(tou)的型式(shi)在(zai)很多成和(he)(he)(he)是(shi)決(jue)定(ding)于(yu)容器(qi)的使用要求(qiu)。對于(yu)氣體(ti)(ti)(ti)的均勻進入和(he)(he)(he)引出、懸浮或黏稠液(ye)體(ti)(ti)(ti)和(he)(he)(he)固體(ti)(ti)(ti)顆粒等(deng)排放(fang)、不同(tong)直(zhi)(zhi)徑圓筒的過(guo)渡，錐(zhui)形(xing)封(feng)頭(tou)(tou)是(shi)理(li)想(xiang)(xiang)的結(jie)構型式(shi)，而(er)(er)且在(zai)厚(hou)度較(jiao)薄時，制造亦較(jiao)方(fang)便(bian)。