进口大口径高温高压闸阀,（德国OLES阀门）

进口大口径高温高压闸阀,(德国OLES阀门品牌)

【进口大口径高温高压闸阀】详细说明：

闸阀有三种阀盖设计形式.*种是螺栓式阀盖,按这种设计形式设计的阀门,其阀体与阀盖用螺栓螺母连接,缠绕式垫片(316夹柔性石墨制造)/金属密封环(中高压时使用)密封.客户有特殊要求时也可采用金属环连接.第二种设计形式是焊接式阀盖,按这种设计形式的阀门,其阀体与阀盖用螺纹连接,全焊密封.客户有特殊要求时也可采用透焊连接.第三种是自密封阀盖,按这种设计形式设计的阀门,其阀体与阀盖用螺纹连接,内压自密环密封.

压力自密封闸阀是利用介质本身的压力来达到密封的目的，压力愈大，产生的密封力亦愈大，密封亦就愈可靠。阀盖的外径上具有光滑锥面，锥面上紧贴着自紧密封圈，密封圈的外径与阀体紧贴。压力自密封应有足够的预紧力，以便当阀内压力不高时，亦能达到密封。这个预紧力可由拧紧支承压盖的螺纹来产生，亦可采用几个螺栓的结构。

Gate valves have three design forms of bonnet. The first is bolted bonnet. The valve body and bonnet are connected by bolts and nuts, the winding gasket (316 clamps of flexible graphite) and the metal sealing ring (medium and high pressure) are sealed. The customer can also use the metal ring connection when he has special requirements. The second design form is bolt-nut connection. Welded bonnet, according to this design form of valve, its body and bonnet are connected by threads and sealed by full welding. Customers can also use through welding connection when they have special requirements. The third kind is self-sealing bonnet, which is designed according to this design form of valve, its body and bonnet are connected by threads, and the inner pressure self-sealing ring is sealed.

The pressure self-sealing gate valve uses the pressure of the medium itself to achieve the purpose of sealing. The greater the pressure is, the greater the sealing force is, and the more reliable the sealing is. The outer diameter of the valve cover has a smooth conical surface, and the conical surface is close to the self-compacting sealing ring. The outer diameter of the sealing ring is close to the valve body. Pressure self-sealing should have sufficient pre-tightening force, so that when the pressure inside the valve is not high, the sealing can also be achieved. This pre-tightening force can be generated by tightening the threads of the supporting cover or by using several bolts.

【进口大口径高温高压闸阀】设计特点：

长螺纹阀杆螺母提供了长的螺纹寿命，并允许在全开的位置时拆掉手轮。

强力柔性石墨垫片用于150lb闸阀，金属缠绕垫用于300lb闸阀，金属垫片用于600lb及以上的闸阀。

阀体内部的整体导轨能够确保闸板在开关的任何位置都保持对中。

弹性楔型闸板能够对座圈表面失真和管道应力引起的阀体变形进行补偿。

防吹出阀杆设计具有一个锥形的上密封面，在阀门全开时，它与阀盖上密封座靠紧。

阀杆与闸板连接强度超过阀杆螺纹根部的强度。

堆焊6号钴基的阀座圈采用密封焊安装，也可按照客户要求采用螺纹阀座圈。

【进口大口径高温高压闸阀】优点：

1 、进口高温高压闸阀中腔采用压力自紧式密封结构，内腔压力越高密封性能越好，支管两端为焊接连接，适应不同的接管要求。 2 、闸板和阀座的密封面采用司太立钴基硬质合金堆焊而成，运动密封硬度高，耐磨、耐高温、耐腐蚀、抗擦伤性能好，使用寿命长。 3 、阀杆经调质和表面氮化处理，有良好的抗腐蚀性和抗擦伤性。 4 、电动阀门的开启和关闭由电动装置来控制，电动装置分别配有电机、减速器、转矩控制机构，现场操作机构，手、电动切换机构。除就地操作外，还可进行远距离操作。

进口高温高压闸阀工作原理 ：

1 、采用压力自紧式密封结构，弹性闸板，两端支管为焊接连。 2 、阀座密封面采用钴基硬质合金等离子喷焊而成，耐磨、抗擦伤性能好。 阀瓣密封面经硬化氮化处理。 3 、阀杆表面经抗蚀性氮化处理，有良好的抗腐蚀和抗擦伤性。 4 、阀门的开启和关闭由电动装置来控制，电动装置分别配有电机，减速器、转矩控制机构、现场操作机构、手、电动切换机构，除就地操作外还可进行远距离操作