Pressing block type displacement sensor

Abstract

The invention discloses a pressing block type displacement sensor, which comprises a lower groove type pressing block body. A high-precision displacement normally-opened switch used for monitoring the spacing change between adjacent photovoltaic assemblies is arranged in the groove of the pressing block body. The left and right vertical plate of the pressing block body, correspondingly arranged on the two sides of the high-precision displacement normally-opened switch, are respectively provided with a left displacement contact and a right displacement contact, wherein the left displacement contact and the right displacement contact are respectively used for pressing and connecting solar photovoltaic modules. The left displacement contact and the right displacement contact are respectively and fixedly connected with the two ends of the high-precision displacement normally-opened switch. The two ends of the high-precision displacement normally-opened switch are respectively concerted with signal output lines for outputting signals. According to the invention, the fixation state of a photovoltaic module on a bracket can be monitored in real time. Therefore, the functions of fault monitoring, alarm state outputting and the like can be realized. As a result, the operation and maintenance personnel can timely handle with the situation, so that the module is prevented from slipping and falling off. The personal and property loss is reduced.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a displacement sensor. Background technique [0002] With the arrival of summer, various regions of our country have successively entered a stage of severe weather, and strong convective weather such as strong winds, rainstorms, and lightning will have a certain impact on household photovoltaic power plants. Through the inspection of household photovoltaic power plants, it is found that there are no uniform installation requirements in the market for the components that are extremely important for wind pressure design, such as the arrangement of components, the quality of supports, the design of power plants, and the counterweight of pile foundations. Pile foundation counterweight etc. are also inconsistent. [0003] In the current distributed photovoltaic module array, each photovoltaic module is fixed to the module bracket through module pressing blocks. The modules are fixed ...

AI Technical Summary

Problems solved by technology

[0003] In the current distributed photovoltaic module array, each photovoltaic module is fixed to the module bracket through module pressing blocks. The modules are fixed on the bracket through frame pressing blocks, and each pressing block overlaps the edges of two photovoltaic modules. ,like image 3 As shown, the fixation of the firmware is achieved by pressing the plane formed by two photovoltaic modules. If one of the modules is displaced, the pressing block will lose its tightness and fixing effect, and the module will slip off the photovoltaic module due to the loss of pressing of the pressing block. Brackets, causing physical damage to components (broken, cracked, etc.), or abnormal internal electrical performance; and because adjacent components are fixed by a component pressing block, when a component slips, it will lead to domino-style components Loosening and slipping will cause the photovoltaic module to fall, damage the module or endanger the safety of personnel

[0004] In order to reduce the risk of this kind of slippage, a pressing block with a rubber pad has been used for fastening and compacting in the current project, which undoubtedly increases the stability of the component installation, but due to the aging of the rubber pad and the environment Erosion, as well as the existence of mechanical vibration, loosening will still occur. After this kind of fault imagination occurs, it cannot be found and eliminated in time, which will cause great safety hazards to the photovoltaic module itself and other personnel.

In order to avoid losses caused by this phenomenon, it is necessary for operation and maintenance personnel to conduct detailed inspections on the photovoltaic array. However, with the increase in the distributed installation capacity of photovoltaics, the maintenance work will become larger and larger, which will bring a lot of trouble to the maintenance personnel. challenge

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