A precise positioning method for flange installation of gis equipment and its warning device

Abstract

The invention discloses a GIS equipment flange mounting accurate positioning method, and further discloses a warning device applied in the GIS equipment flange mounting accurate positioning method. The warning device comprises at least three groups of paired signal transmitters and signal receivers, and is characterized in that the signal transmitter and the signal receiver are fixedly arranged ontwo butt-joint flanges respectively in a mode of being in one-to-one correspondence in position, and the signal receivers are connected in a warning circuit in series. The warning device is simple instructure, easy to implement, low in price, practical and convenient to carry. Flange mounting state information can be acquired more visually by the aid of the warning device, the flange mounting dimension can be controlled more accurately, the flanges are ensured to be accurately mounted, a conductive rod is enabled to be abutted in good condition, and a circumstance that the conductive rod isdamaged to cause a conduction fault or even influence running of GIS equipment due to inaccurate flange alignment is avoided.

Description

technical field [0001] The invention relates to a method for installing substation equipment in a power system and an auxiliary device used therein. More specifically, it relates to a method for precisely positioning GIS equipment flange installation and an application warning device. Background technique [0002] GIS equipment, that is, gas insulated switch combined electrical appliances, has been vigorously promoted and used in power systems in recent years due to its small footprint, good insulation performance, safety and reliability. In the installation process, it is generally selected to be transported in modules at intervals when leaving the factory, and then each interval module is spliced ​​on site. Through the connection of the external cylinder, the internal conductive rods are also connected at the same time. At present, during on-site installation, a crane is generally used to roughly align the ground, and then use a crowbar to roughly align the flanges of each...

AI Technical Summary

Problems solved by technology

During the on-site installation, it was found that in the splicing process of the flange surface, most of the alignment is not completely accurate, and the conductive rod in the middle of the GIS cavity is directly inserted into the middle of the GIS cavity to complete the butt joint after roughly positioning with the long screw rod. When the two positioning screws are still slightly inclined, they can be directly plugged in. This installation method is relatively rough. If there is a certain angle deviation between the two conductive rods, it will cause radial force on the conductive rods inside the two cylinders. On the one hand, the contact finger of the conductive rod will be damaged, which will easily lead to the broken groove of the finger spring, which may cause particle discharge in the cavity; on the other hand, if the force is too large, the connection of the conductive rod will be loosened. When the current is large under operating conditions, a large electromotive force will be formed, resulting in further loosening or even breaking of the conductive rod; moreover, poor connection of the conductive rod will directly lead to poor contact of the conductive rod, and in severe cases, it may cause heat generation and affect the operation of the equipment

Images