The plug feed hole (bifurcation interface) of electric ball valve shall be set at a safe and reliable position with convenient installation and maintenance. When the pneumatic ball valve is installed vertically, the spring support shall be installed on the pneumatic ball valve first, and then the pneumatic ball valve and spring support shall be fixed on the channel steel fixing frame, and the spring nut of the support shall be locked; after the installation of 4 ~ 5 layers, the nuts shall be loosened layer by layer from top to bottom, so that the weight of the pneumatic ball valve is naturally loaded on the support spring. After the pneumatic ball valve is connected and tightened, its bending degree shall not be greater than 1 degree. The edge spacing of two vertically adjacent pneumatic ball valves shall not be less than 0.1M. Expansion joint should be set when the length of pneumatic ball valve is more than 60m.
1. It is forbidden to plug in the socket box with electricity. After installation, the two claw type cards at the front and back of the box should be fixed on both sides of the pneumatic ball valve, and the screws should be tightened. For the plug-in box with large-scale switch, the bottom shall be installed with load-bearing bracket when it is vertically installed; when it is installed horizontally, it shall be equipped with load-bearing hoop. The transition connection of pneumatic ball valve shall adopt tin plated hard copper bar transition connection when the starting end of pneumatic ball valve is connected with the terminal of power distribution cabinet. When the starting end of pneumatic ball valve is connected with transformer, generator set and other equipment with large vibration, copper braided soft connection shall be adopted.
2. When copper busbar is connected with aluminum conductor, copper aluminum transition bar or copper aluminum transition piece shall be used. The safe power transmission operator of pneumatic ball valve must be qualified professional electrical installation personnel, and non professional personnel should leave the scene. During power transmission, the pneumatic ball valve system can not carry any electrical load, and all distribution devices are disconnected. Repair and maintenance of pneumatic ball valve. During long-term operation of pneumatic ball valve, it shall be repaired at least once a year. Check that the total load current shall not exceed the design current and the rated current of the main pneumatic ball valve.