井口装置闸阀填料函包括一套皮碗,该皮碗用压盖(见图la)或弹簧(见图1б)压紧。在填料函结构尺寸为转动配合或滑动配合时仅仅使用密封油脂或油膏来密封压盖和被密封的转动轴之间的间隙是很困难的。因此,带密封油膏的填料函结构通常是一个综合结构,它包括皮碗和密封油膏本身。综合填料函中的皮碗按两种图案(见图2)安装。按照第一图案(见图2a),可在较大 The wellhead gate valve stuffing box consists of a set of cups that are pressed with a gland (see Figure 1a) or a spring (see Figure 1b). It is difficult to seal the gap between the gland and the sealed rotating shaft only with sealing grease or grease when the packing box is of a rotationally fitted or sliding fit. Therefore, the stuffing box structure with sealing grease is usually a composite structure that includes the cup and the sealing grease itself. The integrated stuffing box cup in two patterns (see Figure 2) installed. According to the first pattern (see Figure 2a), it may be larger