Improved generation oil field is electric -magnetic flow meter in pit

The utility model discloses an improved generation oil field is electric -magnetic flow meter in pit, including the sleeve, telescopic hollow structure constitutes an excitation coil with lower extreme sealing joint and settles the storehouse, is provided with an excitation coil skeleton in excitation coil settles the storehouse, is provided with the encapsulation coating in the telescopic outside, and the position that encapsulation coating and excitation coil skeleton correspond is provided with the storage tank of the electrode slice of two indents, and the electrode slice is fixed in the storage tank through encapsulating the coating, the excitation coil lead wire that is provided with an intercommunication circuit section of thick bamboo and excitation coil arrangement storehouse at telescopic solid end is bored a hole, and at excitation coil bone shelf location excitation coil, excitation coil's lead -out wire passes the perforation of excitation coil lead wire and the interior circuit board of a circuit section of thick bamboo is connected. The utility model discloses the position of electrode slice is telescopic surface, improves its seal pressure greatly, because pressurization stopper is not influenced by outside mechanical shock power inside the sleeve, , therefore the whole seal pressure of instrument and reliability are showing and are improving.