Plugging device and plugging system

The invention relates to a plugging device and a plugging system. The plugging device comprises a plugging frame, the plugging frame comprises a first plugging unit, a middle plugging unit, a second plugging unit and a waist part, the two ends of the middle plugging unit are connected with the first plugging unit and the second plugging unit through the waist part respectively, the waist part is sleeved with a fixing part, and a channel is formed in the middle of the fixing part. The plugging frame is provided with an inner cavity, a first opening is formed in the first plugging unit, a second opening is formed in the second plugging unit, and the first opening, the channel, the inner cavity and the second opening are communicated to form a path. The plugging device can omit a locking piece. 本发明涉及一种封堵器及封堵系统。封堵器包括封堵框架，所述封堵框架包括第一封堵单元、中部封堵单元、第二封堵单元和腰部，所述中部封堵单元的两端分别通过腰部与所述第一封堵单元和第二封堵单元相连，所述腰部上套设有固定件，所述固定件的中部形成有通道，所述封堵框架具有内腔，所述第一封堵单元上形成第一开口，所述第二封堵单元上形成第二开口，所述第一开口、所述通道、所述内腔和所述第二开口连通形成一路径。该封堵器能够省略锁定件。