Meter Sealing Screw

Meter sealing screw 

 Background technology of sealing screws

In the electric energy meter manufacturing industry, in order to prevent users from changing meter parameters by opening the meter cover without authorization, almost all electric energy meter covers adopt lead sealing structure or say meter sealing screw. The traditional meter sealing screw sets the lead sealing hole on the body of the screw head, and then binds it to the meter or electric box with lead sealing tape. For example, the Chinese patent with the authorized announcement number of cn204288694u discloses a special threading lead sealing screw for electric energy meter, which belongs to the field of screw manufacturing. The side wall of the lead sealing screw head is provided with evenly distributed lead sealing holes, and the rotation groove of the lead sealing screw is inside the side wall.

The working mode is that after the installation of the meter is completed with the lead sealing screw, the lead sealing strip or lead sealing wire passes through the lead sealing hole, and then is wound on the annular structure of the meter or electric box, and then the lead sealing strip or lead sealing wire is fixed through components such as lead sealing block; If someone tries to change the meter without permission, the lead seal or lead seal wire must be cut off to produce a warning effect; However, this also requires that the meter or box must have a ring structure that can be used for binding. When in use, there will be certain requirements for the structure of the meter.

Descriptions:

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