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D691-074Dmoog穆格伺服閥G761-003
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moog穆格伺服閥G761-3018B第二章 充液閥的基本知識
2.1 充液閥概述
充液閥是一種特殊的液控單向閥，一個方向止流，另一個方向自由流通，先導動作是由油口供壓的控制閥芯用液壓實現(xiàn)的，由此而直接打開主閥。這種閥為疊加系統(tǒng)而設計，即在一個基礎件上，可以疊加各種各樣的其它類別液壓閥。其主要作用是從油箱（或充液油箱）向液壓缸或者系統(tǒng)補充油液，以免出現(xiàn)吸空現(xiàn)象。帶控制的充液閥還能起快速排油的作用。
2.2充液閥的典型結構
充液閥有常閉式和常開式兩種典型結構。
(1)常閉式充液閥
常閉式充液閥有不可控式和可控式兩種形式，不可控式充液閥，它是由閥芯、導向套、復位彈簧、閥體和連接法蘭等主要零件組成。閥芯是蘑菇形的，結構較緊湊，流阻損失??；閥芯重量輕慣性小，動作靈敏。
對于可控式充液閥?？刂朴屯ㄈ肟刂?/span>G122-202A001.G122-829-001G761-3003伺服閥四芯插頭CA120001-2
G122-202A001.G122-829-001G761-3003伺服閥四芯插頭CA120001-2
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G122-202A001.G122-829-001G761-3003伺服閥四芯插頭CA120001-2
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G122-202A001.G122-829-001G761-3003伺服閥四芯插頭CA120001-2
G122-202A001.G122-829-001G761-3003伺服閥四芯插頭CA120001-2
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G122-202A001.G122-829-001G761-3003伺服閥四芯插頭CA120001-2
G122-202A001.G122-829-001G761-3003伺服閥四芯插頭CA120001-2
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G122-202A001.G122-829-001缸的上腔，控制活塞就可使閥芯開啟。控制缸上腔接油箱時，控制活塞在彈簧的作用下復位?？刂聘紫虑慌c充液油箱是想通的。這兩種結構的充液閥都直接安裝在液壓缸的端部，安裝方便，節(jié)省了與工作液壓缸連接的管道。D633-308B D633-313B D633-317B D633-304B D634-501A G761-3005 G761-3004 G761-3003 G761-3002
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D633-189B D633-190B D633-191B D633-192B D633-193B D633-194B D633-195B D633-197B D633-300B
D633-301B D633-302B D633-303B D633-304B D633-307B D633-308B D633-309B D633-311B D633-312B
D633-313B D633-314B D633-315B D633-317B D633-318B D633-320B D633-321B D633-322B D633-323B
D633-324B D633-326B D633-328B D633-329B D633-331B D633-332B D633-333B D633-334B D633-336B
D633-340B D633-341B D633-342B D633-344B D633-345B D633-346B D633-347B D633-348B D633-354B
D633-357B D633-358B D633-359B D633-360B D633-361B D633-362B D633-363B D633-364B D633-365B
D633-369B D633-370B D633-372B D633-374B D633-375B D633-380B D633-382B D633-386B D633-390B
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D633-416B D633-417B D633-418B D633-419B D633-420B D633-423B D633-424B D633-427B D633-431B 浸入式結構，即上部全浸在充液油箱中，結構很緊湊，流阻損失很小。但充液油箱必須安裝在液壓缸的底部，還要解決充液油箱與液壓缸缸底之間的密封問題。檢修不太方便。管道連接式結構，即通過管道和法蘭與充液油箱相連，與浸入式相比，充液油箱的位置布置較靈活，檢修也較方便，但結構顯得龐大，流阻損失也稍大。
