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                                                                                                                                進口自力式調節閥

                                                                                                                                  詳細說明

                                                                                                                                  進口自力式調節閥

                                                                                                                                  進口自力式調節閥產品概述

                                                                                                                                  進口自力式調節閥根據取壓點位置分閥前和閥后兩類,取壓點在閥前時,用于調節閥前壓力恒定;取壓點在閥后時,用于調節閥后壓力恒定。

                                                                                                                                  當將閥前和閥后壓力同時引入執行機構的氣室兩側時,自力式壓差調節閥可以調節調節閥兩端的壓力恒定,也可將安裝在管道上孔板兩端的壓差引入薄膜執行機構的氣室兩側。

                                                                                                                                  組成自力式流量調節閥,或用其他方式將流量檢測后用自力式壓差調節閥實現流量調節。

                                                                                                                                  進口自力式調節閥分為進口自力式壓力調節閥、進口自力式溫度調節閥進口自力式流量調節閥三個系列。

                                                                                                                                  進口自力式調節閥的作用

                                                                                                                                  進口自力式調節閥都利用閥輸出端的反饋信號(壓力、壓差、溫度)通過信號管傳遞到執行機構驅動閥瓣改變閥門的開度,達到調節壓力、流量、溫度的目的。

                                                                                                                                  進口自力式調節閥的優點

                                                                                                                                  進口自力式調節閥是一個新的自力式調節閥種類。相對于手動調節閥,它的優點是能夠自動調節;

                                                                                                                                  相對于電動調節閥,它的優點是不需要外部動力。應用實踐證明,在閉式水循環系統(如 熱水供暖系統、空調冷凍水系統)中,正確使用這種閥門,可以很方便地實現系統的流量分配;可以實現系統的動態平衡;可以大大簡化系統的調試工作;可以穩定泵的工作狀態等。

                                                                                                                                  進口自力式調節閥的分類

                                                                                                                                  進口自力式調節閥分為直接作用式和間接作用式兩種。

                                                                                                                                  1:直接作用式調節閥

                                                                                                                                  直接作用式調節閥又稱為彈簧負載式調節閥,其結構內有彈性元件:如彈簧、波紋管、波紋管式的溫包等,利用彈性力與反饋信號平衡的原理。

                                                                                                                                  :2:間接作用式調節閥

                                                                                                                                  間接作用式調節閥,增加了一個指揮器(先導閥)它起到對反饋信號的放大作用然后通過執行機構,驅動主閥閥瓣運動達到改變閥開度的目的。

                                                                                                                                  如果是壓力調節閥,反饋信號就是閥的出口壓力,通過信號管引入執行機構。

                                                                                                                                  如果是流量調節閥,閥的出口處就有一個孔板(或者是其他阻力裝置)由孔板兩端取出壓差信號引入執行機構。

                                                                                                                                  如果是溫度調節閥,閥的出口就有溫度傳感器(或者溫包)通過溫度傳感器內介質的熱脹冷縮驅動執行機構。

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