Connection bending rigidity testing device and installation testing method of extra-high voltage ceramic casing pipe

The invention provides a connection bending rigidity testing device and an installation testing method of the device of an extra-high voltage ceramic casing pipe. According to the device, the bending rigidity of a flange binding part of extra-high voltage electric equipment can be measured accurately, and problems of unsafe and unstable operation of the extra-high voltage electric equipment caused by large theoretical calculation errors are solved. The testing device comprises an anchoring system, a support system, a loading system and a measuring system, wherein the anchoring system is used for fixing the extra-high voltage ceramic casing pipe; the support system is used for supporting the loading system; the loading system is used for exerting a force to the extra-high voltage ceramic casing pipe; and the measuring system is used for measuring relative corners of the extra-high voltage ceramic casing pipe part. With the adoption of the device, the bending rigidity of the flange binding part can be measured accurately, the deformation of the ceramic casing pipe can also be measured, the strength of the ceramic casing pipe can be tested, the measuring device is high in stability, capable of ensuring the repeatability of testing data, low in maintenance cost, easy to operate, simple in testing method and reliable in result.