Disc suspension insulator mechanical property detection tester

Abstract

The invention relates to a disc suspension insulator mechanical property detection tester featured by comprising a cuboid mechanical support frame (1); the front and rear end faces of the cuboid mechanical support frame (1) is respectively fixedly provided with a front panel and a rear panel; the front panel is fixedly provided with a first cheese bolt (21); the portion, extending into the front panel inner side, of the first cheese bolt (21) is connected with an insulator (4) steel cap through a first transfer metal fitting (3); the rear panel is fixedly provided with a second cheese bolt (22); the portion, extending into the rear panel inner side, of the second cheese bolt (22) is connected with an insulator (4) steel foot through a mechanical stress applying device (10), a second transfer metal fitting (8), a mechanics weighing sensor (7) and a third transfer metal fitting (6) in sequence; the disc suspension insulator mechanical property detection tester is simple in structure, andeasy to use and install.

Description

technical field [0001] The invention relates to a test device for detecting the mechanical properties of a disk-type suspension insulator. Background technique [0002] Insulators are the most widely used devices in power systems, and suspension insulators are mostly used in high-voltage transmission lines and ultra-high-voltage transmission lines. Compared with other power equipment and devices, although insulators are simple in results and relatively low in cost, their importance is no less than that of any other equipment and devices. Transmission line insulator strings are all running in parallel. Any problem with insulators in one string will cause failure of the transmission line, or even a long-term power outage, threatening the continuous and reliable operation of the power system, and will also bring many problems to people's daily life. Inconvenient, causing certain losses to the national economy. When any piece of insulator in operation has a mechanical failure,...

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Problems solved by technology

In addition, the pre-curing after cement binding requires high humidity. If this link is not strictly controlled and the humidity is too low, the cement will evaporate too much water during the initial setting stage, and gaps may also occur

If the operating environment of the insulator has high humidity, the water vapor molecules in the air may penetrate into these gaps. Under the condition of large temperature changes (rapid changes near 0°), the cement adhesive may suffer from multiple freeze-thaws The cycle process will cause the performance of the cement binder to decrease, which will eventually lead to the decrease of the mechanical properties of the insulator

[0004] At present, the research on insulators at home and abroad is mainly focused on the change of its electrical properties. Few studies focus on the change of its mechanical properties. There are even fewer studies on the reduction of the mechanical properties of insulators caused by the changes in the properties of cement binders under stress conditions. Insufficient research in this area, and the lack of corresponding test equipment has brought a lot of inconvenience to the study of the influence of temperature changes on the mechanical properties of insulators

The existing insulator mechanical performance testing machines are mainly divided into two types: vertical and horizontal, both of which use hydraulic devices to apply mechanical stress to the insulators, but both the vertical and horizontal testing machines are large in size and cannot be placed in temperature and humidity conditions. In the environmental test chamber, it is impossible to study the influence of temperature and humidity changes on the mechanical properties of insulators. At the same time, due to the use of hydraulic devices, the volume of the test device needs to be increased, which also brings inconvenience to the study of the influence of temperature changes on the mechanical properties of insulators.

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