進(jìn)口雙向壓蝶閥(德國(guó)奧萊斯OLES閥門)

【進(jìn)口雙向壓蝶閥】詳細(xì)說明：

管網(wǎng)系統(tǒng)的大部分閥門，主要用來(lái)對(duì)介質(zhì)進(jìn)行截?cái)嗯c調(diào)節(jié)，這部分閥門在整個(gè)系統(tǒng)中所占比重大、用量多，要求閥門經(jīng)久耐用性價(jià)比高，同時(shí)應(yīng)能在介質(zhì)正向流時(shí)進(jìn)行調(diào)節(jié)與載斷，在壓差變換或檢修時(shí)又可以防止介質(zhì)倒流，即擁有雙向切斷功能。日前，這部分閥在管網(wǎng)系統(tǒng)上，主要應(yīng)用的有截止閥、閘閥、蝶閥以及球閥。截止閥和閘閥，擁有良好的雙向切斷功能，密封性能與使用壽命都不錯(cuò)，均為閥門始祖之一，但截止閥受截門型結(jié)構(gòu)的先天限制，外形大操作力矩大，無(wú)法生產(chǎn)大口徑，閘閥則無(wú)調(diào)節(jié)功能，用以調(diào)節(jié)流量存在閘板脫落的重大危險(xiǎn)，而大口徑閘閥同樣以其龐大的外形和高度，在制造和運(yùn)輸中困難重重。蝶閥與閘閥相比有開閉時(shí)間短，操作力矩小，安裝空間小和重量輕等特性，部分分工采用金屬雙向蝶閥代替閘閥。但一直來(lái)，蝶閥的密封性能并未*達(dá)到市場(chǎng)要求，除中線襯膠蝶閥能在一定壓力范圍內(nèi)可雙向密封外，其他結(jié)構(gòu)基本為單向流。中線結(jié)構(gòu)受橡膠限制不能普及。經(jīng)過改進(jìn)，市場(chǎng)上出現(xiàn)有不銹鋼彈性片結(jié)構(gòu)的雙向蝶閥，但其價(jià)格高昂。目前主要應(yīng)用于石油、天然氣、煤氣等介質(zhì)較為重要的管線，在一般管網(wǎng)，特別是水系統(tǒng)應(yīng)用極少。

Most valves in pipe network system are mainly used to cut off and regulate the medium. These valves account for a large proportion of the whole system and have a large amount of usage. They require high durability and price ratio. At the same time, they should be able to regulate and cut off the medium when the medium is flowing forward, and can prevent the medium backflow when the pressure difference is changed or overhauled. It has two-way cut-off function. Recently, this part of the valve in the pipe network system, the main application of globe valve, gate valve, butterfly valve and ball valve. Globe valves and gate valves, with good two-way shutoff function, good sealing performance and service life, are one of the ancestors of valves, but globe valves are congenitally limited by the structure of the shut-off gate, the shape of large operating moment, unable to produce large caliber, gate valves have no regulating function, to regulate the flow there is a major risk of gate falling off. Dangerous, and large-caliber gate valves are also difficult to manufacture and transport because of their huge shape and height. Compared with gate valve, butterfly valve has the characteristics of short opening and closing time, small operating moment, small installation space and light weight. Metal bidirectional butterfly valve is used to replace gate valve in part division of labor. However, the sealing performance of butterfly valves has not fully met the market requirements, except that the middle-line rubber-lined butterfly valves can be sealed in a certain range of pressure, other structures are basically unidirectional flow. The middle-line structure is limited by rubber and can not be popularized. After improvement, a bidirectional butterfly valve with stainless steel elastic sheet structure appears on the market, but its price is high. At present, it is mainly used in oil, natural gas, gas and other media pipelines, but seldom used in general pipeline network, especially in water system.

【進(jìn)口雙向壓蝶閥】?jī)?yōu)點(diǎn)：

1、不但能在正向壓力中可靠地關(guān)斷，在反向壓力或反向壓力遠(yuǎn)大于正向壓力中同樣能可靠地關(guān)斷；

2、在密封副的兩個(gè)密封面上可根據(jù)不同的硬度需要運(yùn)用太空等離子噴涂、以太激光濺射、真空保護(hù)滲復(fù)堆焊等*工藝形成馬氏體不銹鋼、奧氏體不銹鋼、硬質(zhì)合金、金屬陶瓷、人造金剛石等梯度功能材料；

3、能自動(dòng)對(duì)正中心（自適應(yīng)），并能自動(dòng)越程補(bǔ)償磨損；

4、關(guān)閉時(shí)充分利用閥內(nèi)介質(zhì)的能量，自動(dòng)加以*密封比壓，使高硬密封副達(dá)到可靠的零泄漏；

5、瞬間關(guān)閉、瞬間打開密封副間無(wú)摩擦。打開時(shí)閥芯投影截面不斷內(nèi)縮并后退、打開初始時(shí)后退快于內(nèi)縮。關(guān)閉時(shí)閥芯投影截面不斷膨脹并前進(jìn)，關(guān)閉初始時(shí)膨脹速率大于前進(jìn)速率，關(guān)閉末期時(shí)前進(jìn)速率大于膨脹速率。具有偏心半球閥、截止閥、楔形閘閥的特點(diǎn)；

6、其主體結(jié)構(gòu)類似蝶閥，具有蝶閥的結(jié)構(gòu)短、體積小的特點(diǎn)，因而可制造大口徑、特大口徑、超大口徑的閥門；

【進(jìn)口雙向壓蝶閥】特點(diǎn)：

1、采用三偏心蝶閥堪稱ding尖過程閥門，此設(shè)計(jì)使閥門為高溫、高壓、防火應(yīng)用中氣泡級(jí)密封的理想硬密封蝶閥。

2、由于采用焊接結(jié)構(gòu)，使閥門與管道平面達(dá)到j(luò)iu久性的零泄漏。

3、此閥無(wú)法蘭，對(duì)管道和保溫包扎帶來(lái)了很大的方便和美觀。