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圖文解說法蘭密封與墊片
2024-11-27
![圖片](https://omo-oss-image.thefastimg.com/portal-saas/new2023122615232051212/cms/image/0e0d156d-b212-4dab-97e0-8d5a9b8e7ac4.webp)
為達(dá)到上述目的所作用到墊片上的最小單位壓緊力,稱為比壓力。當(dāng)與法蘭連接的管道達(dá)到操作壓力時(shí),因內(nèi)壓的軸向力的作用導(dǎo)致兩片法蘭有分開的趨勢,而螺栓則有伸長的趨勢,作用在墊片上的壓緊力將減少。當(dāng)作用在墊片有效截面上的壓緊力降至某一臨界值時(shí),仍能保持密封,這時(shí)墊片上的剩余壓緊力即為墊片的有效緊固力。當(dāng)墊片上壓緊力小于有效緊固力時(shí)法蘭就會發(fā)生泄漏,甚至將墊片吹跑,因此墊片的有效緊固力必須大于管道的操作壓力。兩片法蘭密封面之間的距離,在操作狀態(tài)要比初始狀態(tài)大,這時(shí)墊片與法蘭密封面的緊密性是靠墊片的回彈力來保證的。
![圖片](https://omo-oss-image.thefastimg.com/portal-saas/new2023122615232051212/cms/image/fec1b3de-ec9b-4f24-8c91-0d6ff611a932.webp)
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![圖片](https://omo-oss-image.thefastimg.com/portal-saas/new2023122615232051212/cms/image/334eae85-1c55-4df1-a55a-9c2b4f699ff5.webp)
2024 /
11-27
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