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对于成套的自喷井井口设备,关于装置基本上采用平行闸板阀,平行闸板阀工作的可靠性和寿命取决闸板的密封性程度。闸板微小的渗漏将导致—闸板和阀座的严重磨损。闸板密封面上,保证密封性的预紧比压,视其阀的结构用不同的方法来产生。在对分式平行闸板结构中预紧比压靠安装在两半闸板闸间的圆柱形弹簧来产生,在整体式平行闸板结构中预紧比压靠安装在阀座后的蝶形弹簧来产生。平行闸板阀的二种闸板结构的主要缺点是不能调整密封面上的比压。而楔型闸板结构复杂且制造困难。阿塞拜疆石油机械制造科学研究所为了创造可靠的平行闸板结构,在闸板工作状态
For a complete set of self-injector wellhead equipment, the device is basically parallel gate valve, parallel gate valve reliability and life depends on the extent of the gate seal. Slight leakage of the ram will result in severe wear of the ram and seat. Gate sealing surface, to ensure the tightness of the preload than the pressure, depending on the structure of the valve used in different ways to produce. In the fractional parallel gate structure preload than the pressure installed in the two half-gate brake between the cylindrical spring to produce, in the overall parallel gate structure preload than after the seat mounted in the butterfly Spring to produce. The main disadvantage of the two gate structure of the parallel gate valve is that the specific pressure on the sealing surface can not be adjusted. The wedge gate structure is complex and difficult to manufacture. Azerbaijan Petroleum Machinery Manufacturing Institute of Science in order to create a reliable parallel gate structure, the gate in the working state