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       膨脹節(jié)習慣上也叫伸縮節(jié),或波紋管補償器，是用以利用波紋管補償器 膨脹節(jié)的彈性元件的有效伸縮變形來吸收管線、導管或容器由熱脹冷縮等原因而產(chǎn)生的尺寸變化的一種補償裝置，屬于一種補償元件�？蓪S向，橫向，和角向位移的的吸收，用于在管道、設(shè)備及系統(tǒng)的加熱位移、機械位移吸收振動、降低噪音等。
　　膨脹節(jié)為補償因溫度差與機械振動引起的附加應(yīng)力，而設(shè)置在容器殼體或管道上的一種撓性結(jié)構(gòu)。由于它作為一種能自由伸縮的彈性補償元件，工作可靠、性能良好、結(jié)構(gòu)緊湊等優(yōu)點，已廣泛應(yīng)用在化工、冶金、核能等部門。在容器上采用的膨脹節(jié)，有多種形式，就波的形狀而言，以U形膨脹節(jié)應(yīng)用得最為廣泛，其次還有Ω形和C形等。而在管道上采用的膨脹節(jié)就結(jié)構(gòu)補償而言，又有萬能式、壓力平衡式、鉸鏈式以及萬向接頭式等。

     Expansion joint habits also called the slip joint, or corrugated tube compensator, is to use corrugating tube compensator expansion joint of elastic component effective telescopic deformation to absorb pipelines, catheters or container consists of heat bilges cold shrink wait for a reason and produce dimensional change of a kind of compensation devices, belongs to a kind of compensation components. But to axial, horizontal, and the absorption of the Angle to the displacement, used in pipeline, equipment and system of heating displacement, mechanical vibration, low noise absorption displacement.
    Expansion joint for compensation for temperature difference and mechanical vibration cause additional stress, and set in the vessel shell or pipe to a flexible structure. Because it as a free adjustable elastic compensation components, reliable work, the performance good, compact, already widely used in chemical industry, metallurgy, nuclear energy and other departments. In the container of the expansion joint, there are various forms, the shape of the wave character, with U shape expansion joint application to the most widely and there are Ω shape and C form. And in the line of the expansion joint structure for compensation, and the universal type, pressure balance type, hinged universal joints and style, etc.
 

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