Low cost trough type solar concentrator

Abstract

The invention provides a low cost trough type solar concentrator which comprises a reflector mechanism and a transmission mechanism. Reflectors of the reflector mechanism are fixedly arranged on a torque shaft of the transmission mechanism through support arms which are plate type support arms through stamping forming; every two support arms are connected into a group; and two grouped support arms are respectively arranged on adjacent end portions of adjacent reflectors. The low cost trough type solar concentrator has the advantages of enabling sizes of the support arms to be significantly reduced on the basis of guaranteeing installation requirements such as the strength and then saving materials and costs, being convenient to assemble, being capable of achieving automatic assembly operation, enabling the assembly process to be optimized, saving the manpower and time and enabling the construction costs of the low cost trough type solar concentrator to be further reduced due to the fact that an innovative design is performed on shapes and structures of the support arms.

Description

technical field [0001] The invention relates to a solar concentrator, in particular to a low-cost trough solar concentrator. Background technique [0002] In my country's Twelfth Five-Year Plan, solar thermal power generation is the focus of development, but cost has become a bottleneck hindering solar thermal power generation. How to reduce the cost of solar thermal power generation has become a research project that is competing around the world. At present, trough solar concentrators can be roughly divided into two types: tube truss type and stamping type due to the difference in support arms. [0003] Most of the existing trough solar concentrators in my country are tube truss type. Such as figure 1 As shown, its truss type support arm 100 is mainly welded by truss beams and rods. Its disadvantages are: firstly, it consumes a lot of steel, and it is heavy and costly; secondly, the structure is complex, truss welding requires positioning, marking, and welding must be d...

AI Technical Summary

Problems solved by technology

Its disadvantages are: firstly, it consumes a lot of steel, and it is heavy and costly; secondly, the structure is complex, truss welding requires positioning, marking, and welding must be done manually, and there are many welding points for truss beams and rods, which cannot be automated. Time-consuming, labor-intensive, and high processing costs; according to statistics, ten skilled workers can assemble a group in three days, so the processing technology of this traditional structure is not conducive to industrialized mass production

Its disadvantage is that the stamped support arm 200 is a single-piece structure with poor stability. In order to ensure the support strength, the arc shape of its root must be set to not less than half a circle, so that the two opposite support arms can embrace each other. The moment axis of the transmission mechanism, and the thickness of the support arm must be set to more than 5mm, the steel used is more, the cost is high, and the weight is heavy; secondly, the production press needs to be large, resulting in high production cost; the production speed is slow if the press is too large

[0005] Since solar energy itself is a low energy source, it is difficult to collect

A MW solar thermal power station needs to install nearly 300 groups (12 meters per group) of trough solar concentrators. Generally, the minimum installed capacity of a solar thermal power station is more than 20 MW. It can be seen that small-scale production cannot meet actual needs. , it is imperative to develop low-cost, mass-produced trough solar concentrators

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