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密閉型高壓橡膠接頭工作原理與特點

密閉型高壓橡膠軟接頭(以下簡稱自密型接頭)是最近研制成功的一項科研成果。它的基本原理是運用管內壓力自行增強密封,徹底解決了由橡膠被過量壓縮引起的各種弊病。通過高溫、低溫、撓曲、脈沖、拉脫力、爆破、耐壓密封、老化、自密等各項試驗,證明這種軟管接頭除具有優越的密封性能外,還具有重量輕、體積小、結構緊湊、連接牢固、通徑大、流阻小、使用壽命長、用料省、加工簡易、裝配方便、接頭可多次回收使用等優點。

高壓管道連接,必須滿足一定溫度范圍內的連接強度和密封性這兩項基本性能要求。對于高壓橡膠軟管來說,還必須考慮接頭對橡膠的壓縮所引起的老化影響和彈性應力松弛等問題。目前的高壓橡膠軟管接頭,雖有不少類型,但其基本結構原理都是沿襲了低、中壓橡膠接頭的原理,即依靠芯軸與套管之間的夾緊力來獲得密封和連接強度。所不同的僅僅是增加了壓緊量和加長密封面長度。

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Working principle and characteristics of closed high pressure rubber joint

Closed type high pressure rubber flexible joint (hereinafter referred to as the self sealing type) is a recent development of a successful research results. Its basic principle is to use the tube pressure to enhance the seal, completely solve the problem caused by excessive compression rubber. The high temperature, low temperature, deflection, pulse, pull-out force, blasting, pressure seal, aging, self sealing of the test that the hose joint except with excellent sealing performance, but also has light weight, small volume, compact structure, firm connection, large diameter, small flow resistance, long service life, material saving, simple processing, convenient assembly, joint can be recycled for many times to the use of the advantages of using.

High pressure piping connections must meet the two basic requirements of the strength and tightness of the connections within a certain temperature range. For high pressure rubber hose, it is necessary to consider the influence of the joint on the compression of the rubber and the elastic stress relaxation. The high pressure rubber hose joints, although there are many types, but the basic structure and principle are followed the low, medium pressure rubber joint principle, which rely on core shaft between the sleeve and the clamping force to obtain sealing and bonding strength. The difference is only the increase of the pressure and the length of the sealing surface.