安沃馳品牌過濾器-調壓閥- R412007209 *

安沃馳品牌過濾器-調壓閥- R412007209 *

過濾器-調壓閥, 系列 AS3-FRE - R412007209

• G 1/2
• 過濾器氣孔直徑 5 µm
• 鎖定式
• 用于掛鎖
• 帶有壓力表
• 適合ATEX

 壓力調節閥亦稱自力式平衡閥、流量控制閥、流量控制器、動態平衡閥、流量平衡閥，是一種直觀簡便的流量調節控制裝置，管網中應用流量調節閥可直接根據設計來設定流量，閥門可在水作用下，自動消除管線的剩余壓頭及壓力波動所引起的流量偏差，無論系統壓力怎樣變化均保持設定流量不變，該閥這些功能使管網流量調節一次完成，把調網工作變為簡單的流量分配，有效的解決管網的水力失調。流量調節閥主要應用于：集中供熱（冷）等水系統中，使管網流量按需分配，消除水系統水力失調，解決冷熱不均問題。

供應德國AVENTICS安沃馳氣動元件主要產品：氣缸,活塞桿氣缸,無桿氣缸,旋轉驅動裝置,氣動閥,閥島,調壓閥,流量閥,止回閥,氣源處理,真空發生器,傳感器
aventics電磁閥安沃馳氣動閥德國力士樂濾芯，rexroth濾芯安沃馳氣動閥安沃馳氣缸  安全閥、調壓閥、精密調壓閥、壓力調節閥、帶管套的連接電纜、接線盒、分氣塊、安裝組件、氣動計時器、壓力開關、信號斷路器、雙手操作、二位五通換向閥、二位三通換向閥、二位三通 截止閥、2路3通手動滑閥、彎角 球閥、隔壁 球閥、二位三通 截止閥、急停閥、快速通風閥、先導式單向閥、單向節流閥、單向節流閥、止回閥、單向節流閥、單向節流閥、線圈、多極插頭、橋式連接件、垂直連接的壓力調節器、回路中間板、端板組件、端板組件、直角底板、螺紋接口、單個底板、分氣條、直角底板、手動換向的按鈕、兩位五通換向閥、氣動閥組、對中環、傳感器、無桿氣缸、工業緩沖器、滑槽氣缸力士樂傳感器，力士樂活塞桿氣缸，力士樂電磁閥，力士樂換向閥
力士樂方向閥，力士樂溢流閥，力士樂比例閥，力士樂伺服閥
力士樂流量控制閥，力士樂截止閥，力士樂柱塞泵，力士樂葉片泵
力士樂油缸，力士樂馬達，力士樂氣動閥，力士樂氣缸，力士樂氣動
力士樂線圈，力士樂插頭， 力士樂放大器力士樂導軌力士樂齒輪泵
力士樂內齒輪泵力士樂滑塊，力士樂滑軌，力士樂線軌
安沃弛傳感器，安沃弛氣動三聯件安沃弛氣動兩聯件aventics氣動閥
，aventics氣缸，aventics傳感器，BOSCH氣動元件,BOSCH氣缸
BOSCH電磁閥，BOSCH換向閥，BOSCH氣動閥，BOSCH手動閥
BOSCH線圈，REXROTH傳感器 日本油研電磁閥yuken比例閥油研換向閥yuken柱塞泵
阿托斯電磁閥atos電磁閥阿托斯葉片泵阿托斯油泵atos放大器 阿托斯葉片閥
德國力士樂柱塞泵力士樂油泵rexroth油泵力士樂齒輪泵力士樂減壓閥
美國派克油泵parker齒輪泵parker插裝閥，美國派克插裝閥，parker過濾器
，派克濾芯美國派克，parker馬達，派克馬達，
    ，parker放大器美國派克放大器派克電磁閥，派克換向閥，派克方向閥，派克溢流閥，派克柱塞泵，派克葉片泵，派克氣動閥，
派克氣缸，派克過濾器，parker濾芯，派克濾芯，派克線圈，派克，美國派克PARKER公司液壓產品:PARKER派克伺服閥,PARKER派克電磁閥,PARKER派克比例閥,
PARKER派克柱塞泵,PARKER派克馬達,PARKER派克放大器,PARKER派克插裝閥，parker接頭,
parker軟管,parker快速接頭,派克接頭,派克快速接頭
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訂購流程：

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壓力調節閥工作原理：

通過接收工業自動化控制系統的信號（如：4~20mA）來驅動閥門改變閥芯和閥座之間的截面積大小控制管道介質的流量、溫度、壓力等工藝參數。實現自動化調節功能。

種類

編輯

由于氣動調節閥具有本質防爆、性能可靠等優點，國內外調節閥仍以氣動為主。

過去，國內正式生產的小流量調節閥。使用壓力可達100公斤/厘米 2 ，額定的流通能力C 值可以 從0.05 到0.0012。其閥座孔徑為3毫米，閥芯為圓柱形，上面刻有一道或數道V 型槽 ，閥桿行程6毫米，閥門 無配套 的定位器，因此控制精度較差。

我國也引進了小流量調節閥。流通能力約為0.001，閥芯為帶有缺口的圓柱形。工作壓力為300公斤/厘米 2 閥桿行程7/16英寸，閥芯為圓錐形，該閥門帶有摩爾公司 的頂裝定位器。

上述這類閥門的特點是結構簡單，重量輕。常用的閥座孔徑為1/8～1/4英寸(約為3.175A-6.35 毫米)，閥桿行程為1/4～l/2英寸(合6.35～12.7 毫米)。這類閥門的流量能力小可以做到0.00006，以至更小。

一般地說，圓柱開槽型的閥芯，在特性化方面比圓錐形好，它可以通過改變 槽深來獲得 設計特性，但后者調節可*性好，因為通過閥門的流體，分布在閥芯截面的整個圓周上。這種閥門常用在精度要求不很高的場合。但容量精度和特性的重現性較差。

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對于高壓小流量調節閥，還必須考慮由主于高壓和高壓差帶來的一系列問題。如執行機構必須具有足夠的輸出力，以克服介質的不平衡力，閥門零件強度問題，高壓密封問題，而 關鍵的是閥芯、閥座的材質和加工問題。

高壓調節閥閥芯、閥座損壞原因很復雜，這里面的理論不盡相同，但普遍引起重視的是高速液(氣)流相對閥芯、閥座運動引起的沖刷現象(亦 稱速度 效應)和液體介質在高壓差下的氣蝕現象。前者損壞形式是與流線有一定關系的沖刷痕跡，后者則是海綿狀孔洞。

在有氣蝕產生的場合下，如果閥芯，閥座材質選用不當，少則兒天，多則幾個月，閥門就將報廢。

解決氣蝕問題應從求避免氣蝕的方法和耐氣蝕 的材料著手，避免氣蝕的方法有幾種。

1、改進閥芯，閥座設計，使其具有合理的液流速度分布和壓力分布。如小流量調節閥采用狹長通道式閥芯、閥座。閥芯、閥座孔都有很小的錐度，適用于在恒定的上游壓力條件下精確地控制流量。由于這種 結構具確吸收 能量，減小氣蝕的功能，據資料報導，它曾用于4200公斤/厘米 2 的壓降下。

2、在 條件充許的 情況下，在液流中充氣，以局部地或全部地消除低壓區。

3、閥門串聯使用，以減小每個閥的壓降。

4、使閥前后壓差低于該介質在調節閥入口溫度下產生汽蝕現象的大允許壓差。

5、介質在“流開”狀態下工作，允許壓差比“流閉”狀態大三倍多。 ^[2] 

結構

編輯

自力式壓力調節閥因為不需要其它外來能源如電源、氣源，僅靠介質自身的能量來驅動，既節能又環保，使用方便，安裝完畢后設定好壓力值即可投入自動運行，所以在對控制精度要求不高，又缺乏電源、氣源的場合，得到了越來越廣泛的使用。但在使用過程中，一定要注意選型的特殊性，否則容易引起事故。在使用過程中，要注意使用的選型和安裝環境，因此，詳細了解自力式壓力調節閥的工作原理和結構是非常重要的。

特點

編輯

所謂小流量調節閥，顧名思義，就是流通能力很小的調節閥。

閥門的流通能力是在統一條件下的閥門容量指標。我國用C 值表示 。其定義為：閥門全開時，當閥前后壓差為1公斤/厘米 2 ，介質重度為1克/ 厘米 3 時 ，每小時流過閥門的介質量(米 3 /時)。對于不可壓縮流體，在充分湍流的狀態下閥門的流通能力僅僅取決于閥本身的結構。在計算所需的閥門流通能力時，應注意介質不同或流動條件不同時， 閥內流動 狀態會有很大的差異。

在小流量情況下，尤其是粘性流體和低壓下工作時，流體的主約束往往是層流或層流和湍流的混合態。層流時，經過閥門的介質流量和閥前后壓差呈線性關系。而在層流和湍流混合態下，隨著雷諾數的增加，即使壓差不變，流經閥門的介質量也會增加。在*湍流時，流量才不隨雷諾數變化而變化。盡管如此，選擇小流量調節閥，仍然用傳統的方法和計算公式進行。但是其計算值和實際值偏離很大，據資料介紹在 Cv=0.01以下時，它只是作為一個容量指標，具有參考意義而已。實際流通能力應根據經驗確定。

隨著流通能力減小，閥門的可調比將下降。但少也能保證10:l到15:1之間，如果可調比再小，就難以進行流量的調節。

閥門在串聯使用時，隨著開度變化，,閥前后壓差也有變化，因此使閥門的工作特性曲線偏離理想特性。如果管路阻力大，直線性會變成快開特性，而喪失調節能力。等百分比特性將變成直線特性。小流量情況下，由于很少有管路阻力，上述特性畸變就不大了，對等百分比特性，實際上也就沒有必要。從制造的角度來說， Cv =0.05以下時，也不可能再產生等百分比的側面形狀。因此，對小流量閥主要的問題是如何將流量控制在所需要的范圍之內。

從經濟效果出發，使用者希望一個閥門可同時用于截流和調節，也是可以做到的。但對于調節閥來說，主要是實現對流量的控制，關閉是次要的。認為小流量閥本身流量很小，在關閉時很容易實現截流，是錯誤的。國外對小流量調節閥泄漏量一般也做了規定。當Cv 值為10 時 ，該閥門的泄漏量規定為：在3.5 公斤/厘米。氣壓下，泄漏量為大流量的1 % 以下。 ^[1] 

用途

編輯

自力式壓力調節閥(以下簡稱壓力閥)是一種無需外來能源而只依靠調介質自身的壓力變化進行自動調節壓力的節能型產品.具有測量、執行、控制的綜合功能。廣泛適用于石油、化工、冶金、輕工等工業部門及城市供熱、供暖系統。本產品可用于非腐蝕性〔溫度350℃〕的液體、氣體和蒸汽等介質的壓力控制裝置。