99久久精品免费观看国产-99久久精品免费-99久久精品毛片免费播放-99久久精品久久久久久清纯-99久久精品国内-99久久精品国产自免费

當(dāng)前位置:首頁(yè)>新聞中心>新聞資訊硬密封蝶閥常見(jiàn)問(wèn)題及解決措施

硬密封蝶閥常見(jiàn)問(wèn)題及解決措施

來(lái)源:http://www.szgotta.com.cn/ 日期:2022-11-24 發(fā)布人:admin
金屬硬密封蝶閥從密封結(jié)構(gòu)上可分為兩大類,一是彈性硬密封結(jié)構(gòu),二是多層次硬密封蝶閥。彈性硬密封蝶閥生產(chǎn)口徑一般在DN500以下,大口徑多采用的是多層次結(jié)構(gòu)。DN500以下的蝶閥用量大,所以用戶在使用時(shí)遇到的問(wèn)題也就多,在此,就常出現(xiàn)的問(wèn)題歸納總結(jié),并指導(dǎo)正確安裝和使用。
The metal hard seal butterfly valve can be divided into two categories from the sealing structure, one is the elastic hard seal structure, and the other is the multi-level hard seal butterfly valve. The production caliber of elastic hard seal butterfly valve is generally below DN500, and the multi-layer structure is adopted for large caliber. The use of butterfly valves below DN500 is large, so users will encounter many problems when using them. Here, we summarize the common problems and guide the correct installation and use.
由于多層軟硬疊式密封圈固定在閥板上,當(dāng)閥板常開(kāi)狀態(tài)時(shí)介質(zhì)對(duì)其密封面形成正面沖刷,金屬片夾層中的軟密封帶受沖刷后,直接影響密封性能。
Since multi-layer soft and hard laminated seal rings are fixed on the valve plate, when the valve plate is normally open, the medium will cause a positive flushing on its sealing surface, and the sealing performance will be directly affected after the soft seal belt in the metal sandwich is flushed.
受結(jié)構(gòu)條件的限制該結(jié)構(gòu)不適應(yīng)做通徑DN200以下閥門(mén),原因是閥板整體結(jié)構(gòu)太厚,流阻大。
Due to the limitation of structural conditions, this structure is not suitable for valves with a diameter below DN200, because the overall structure of the valve plate is too thick and the flow resistance is large.
硬密封蝶閥閥門(mén)不通。原因有:
The hard seal butterfly valve is blocked. The reasons are:
一、控制通道被雜物堵塞(通道細(xì)小,容易堵塞)。
1、 The control channel is blocked by sundries (the channel is small and easy to block).
二、活塞因銹漬卡在高位置;雖上部受力,但不能向下移動(dòng),打不開(kāi)主通道。
2、 The piston is stuck at a high position due to rust stains; Although the upper part is stressed, it cannot move downward and cannot open the main channel.
所以,活塞減壓閥前須安裝過(guò)濾器;對(duì)于新安裝或長(zhǎng)期停用的減壓閥,一定要拆開(kāi)檢查和清洗。
Therefore, a filter must be installed before the piston pressure reducing valve; The pressure reducing valve newly installed or out of service for a long time must be disassembled for inspection and cleaning.
三、因三偏心結(jié)構(gòu)的原理,閥板的密封面與閥座之間的密封是靠傳動(dòng)裝置的力矩使閥板壓向閥座。正流狀態(tài)時(shí),介質(zhì)壓力越高密封擠壓越緊。當(dāng)流道介質(zhì)逆流時(shí)隨著介質(zhì)壓力的增加閥板與閥座之間的單位正壓力小于介質(zhì)壓強(qiáng)時(shí),密封開(kāi)始泄漏。
3、 Because of the principle of three eccentric structure, the sealing between the sealing surface of the valve plate and the valve seat is made to press the valve plate to the valve seat by the torque of the transmission device. In the positive flow state, the higher the medium pressure, the tighter the seal extrusion. When the medium in the flow passage is countercurrent, with the increase of medium pressure, the unit positive pressure between the valve plate and the valve seat is less than the medium pressure, and the seal starts to leak.

熱銷產(chǎn)品:   執(zhí)行驅(qū)動(dòng)裝置 通用工業(yè)閥門(mén) 冶金工業(yè)閥門(mén) 水利水務(wù)閥門(mén) 石油化工閥門(mén) 電力電站閥門(mén) 核電軍工閥門(mén)

上海良工閥門(mén)山東濟(jì)南銷售處 網(wǎng)站備案號(hào):魯ICP備2021030403號(hào)-1    電話:15098929951 座機(jī):0531—85816056 地址:濟(jì)南天橋區(qū)歷山北路198號(hào)國(guó)際五金機(jī)電城A區(qū)412號(hào) 
網(wǎng)址:http://www.szgotta.com.cn/

【本站圖片均由網(wǎng)站所有方提供,部分圖片來(lái)源于網(wǎng)絡(luò),如無(wú)意中侵犯了某媒體或個(gè)人的知識(shí)產(chǎn)權(quán),請(qǐng)來(lái)信或來(lái)電告之,本網(wǎng)站將立即刪除。】

主站蜘蛛池模板: 欧美特黄高清免费观看的 | 国产无限资源 | 欧美一级视频在线 | 国产夜色视频 | 国产色婷婷亚洲 | 日韩经典在线 | 国产免费久久精品99 | 精品一区二区三区在线成人 | 伊人99在线观看 | 韩剧网最新的韩国电视剧免费观看 | 久草精品视频 | 色偷偷成人 | 日日操天天 | 亚欧免费视频 | 国产精品天天看特色大片不卡 | 亚洲国产精品自在在线观看 | 视频国产精品 | 微拍秒拍99福利精品小视频 | 成人网在线看 | 视频在线色 | 国产三级日本三级美三级 | 99热这里只有精品在在 | 久久国内精品 | 欧美视频日韩视频 | 可以免费看污片的网站 | 四虎成人精品国产一区a | 99精品视频在线观看re | 日韩欧美亚洲国产精品字幕久久久 | 亚洲国产成人99精品激情在线 | 欧美一区二区三区不卡免费观看 | 精品国产精品国产偷麻豆 | 三级4级全黄在线看 | 黄色免费网站视频 | 成人精品视频在线观看 | 九色视| 国产精品久久久亚洲456 | 欧美一区二区三区久久久 | 精品久久免费视频 | 有码中文| 天天爆操 | 99精品一区二区免费视频 |