斜體式水力控制閥也是一種自動(dòng)類閥門，它的動(dòng)作原理、結(jié)構(gòu)與隔膜式水力控制閥基本一致。它具有隔膜式同樣的優(yōu)點(diǎn)和功能，它的感應(yīng)部件同樣是膜片，主要不同之處是主閥體采用斜體式，這樣使該類閥門比隔膜式和活塞式的流阻系數(shù)更小，流量更大。而且通過對膜片下腔的結(jié)構(gòu)及閥瓣結(jié)構(gòu)的改進(jìn)，使該閥的調(diào)節(jié)性更好。 斜體式的膜片室的結(jié)構(gòu)與前面介紹的膜片式水力控制閥不同。如上圖所示，膜片室的下腔被設(shè)計(jì)成獨(dú)立的空腔，它可以根據(jù)不同用途選擇是否與主閥腔相通。這樣不但可以實(shí)現(xiàn)上下膜片室單獨(dú)控制，從而可使用外部的壓力源驅(qū)動(dòng)閥門的開關(guān)，而不受介質(zhì)壓力的限制，又能實(shí)現(xiàn)緩開緩閉等功能。 斜體式水力控制閥的上、下膜片室、膜片組件、閥桿、閥瓣等部件可整體拆下取出，這給維修帶來了極大的方便。 斜體式水力控制閥的閥桿采用中段導(dǎo)向，避免了閥桿兩端導(dǎo)向易出現(xiàn)不同心的弊端。 The italic hydraulic control valve is also an automatic type valve, which is basically consistent with the operating principle, structure and diaphragm type hydraulic control valve. It have the same advantages and functions of the diaphragm type,its sensing part is also a diaphragm, the main difference is the italic type is used in the main body, such making that the class than the diaphragm and piston valve flow resistance coefficient of smaller, more traffic. Moreover, the valve is better adjusted by improving the structure of the cavity and the valve structure. The structure of italic diaphragm is different from the diaphragm type hydraulic control valve described earlier. As shown in the figure above, the lower cavity of the diaphragm chamber is designed as an independent cavity, which can be used to select whether or not it is connected to the main valve cavity. In this way,not only can the diaphragm chamber be controlled separately, but the external pressure source can be used to drive the valve's switch, without the restriction of media pressure, and can realize the function of easing and closing. The upper and lower diaphragm chamber, diaphragm assembly, valve stem, disc and other parts can be removed and removed, which brings great convenience to the maintenance. The valve stem of italic hydraulic control valve adopts the middle section guide,avoiding the disadvantages of different heart on both ends of the stem. 執(zhí)行標(biāo)準(zhǔn) Executive standard 法蘭尺寸：GB/T 17241.6 試驗(yàn)檢驗(yàn)：GB/T 13927 性能規(guī)范 Performance specification 注：1、PN=2.5MPa時(shí)閥體、閥蓋材料為鑄鋼，法蘭尺寸執(zhí)行GB9113.1 主要零件材料 Major part material
公稱通徑 Nominal diameter DN 50~1000 mm 公稱壓力 Nominal pressure PN 1.0 1.6 2.5 Mpa 殼體試驗(yàn) Shell test 1.5 2.4 3.75 密封試驗(yàn) Sealing test 1.1 1.76 2.75 氣密封試驗(yàn) Gas seal test 0.6 0.6 0.6 適用溫度 Suitable temperature ≤100 ℃ 適用介質(zhì) Applicable medium 水Water
2、主閥外的控制管路、導(dǎo)閥、管件等均為銅合金。
3、橡膠件也可選用三元乙丙或氟橡膠。零件 Part 材料 Material 閥體、閥蓋 Valve body, cover 灰鑄鐵/球墨鑄鐵Gray cast iron/nodular cast iron 閥桿 Valve stem 不銹鋼 Stainless steel 膜片 Diaphragm 增強(qiáng)丁腈橡膠 Enhanced butadiene rubber 閥瓣密封圈 Disc seal 橡膠 Rubber 彈簧 Spring 不銹鋼 Stainless steel 閥瓣、閥座 Disc, valve seat 銅合金 Copper alloy 表面涂裝 Surface coating 環(huán)氧樹脂 Epoxy resin
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蝶閥;球閥;閘閥;止回閥;旋塞閥;截止閥;調(diào)節(jié)閥;電站閥;水力控制閥;法蘭;柱塞閥;冶金閥
水力控制閥 產(chǎn)品信息
