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Application of small independent solar cell system

2021-10-22 17:05:45

(1)Navigational marker light

Beacon light is a navigation facility for rivers, lakes, canals, reservoirs and other waterways. Its main role is to reflect the waterway conditions that meet the needs of shipping and point out the direction and boundaries of the economic and safe waterway to guide ships to navigate safely and quickly.

 

Solar cell beacon light has the following advantages:

① Reliable in use and simple in maintenance. It can withstand the test of strong winds of grade eight, nine or even greater for many times.

②The light brightness is stable and the range is guaranteed. Reduce the labor intensity of the beacon workers; make the beacon management level improve and the light normal rate increase.

Application of solar cells as a power source for beacon lights, has been very common at home and abroad, the use of good results, stable and reliable.

 

(2)Railway Signal Light

Railroad signal light is one of the important indispensable equipment to ensure the safe and punctual operation. The silicon solar cell power supply for railway signal lights works reliably, with stable performance and good use, and solves the problem of power supply for railroad signal lights in stations without reliable AC power supply in a more satisfactory way. Railroad signal light is of great significance to ensure the safety and punctuality of railroad transportation and gradually realize the modernization of railroad transportation. Its main advantages are: it improves and stabilizes the display distance of the signal, which is conducive to the safety of traffic. In the terrain and meteorological conditions are very harsh environment, the use of silicon solar cell lights, power supply voltage stability, light reliability, good continuity, to avoid the phenomenon of extinguishing the light, and improve the display distance of about double. Silicon solar cells for power supply, almost no maintenance work, labor intensity is greatly reduced. Solar cell railroad signal system, consisting of the following parts: ① silicon solar cell array; ② battery; ③ power controller; ④ signal luminaire; ⑤ transmission line; ⑥ silicon solar cell array tray, bracket and tracking device.

 

(3) Electric fence power supply

In order to develop animal husbandry and prevent grassland degradation, the scientific zoning rotational grazing system is used to replace the backward nomadic grazing method. The so-called zoning rotational grazing system is a large area of pasture is divided into a number of districts, with a certain number of herds and equal time, according to the district rotation grazing, so that the grazing intensity is not too large, and thus conducive to the renewal of pasture rejuvenation. To "rotate grazing" should be "zoning", and to use fences to round up each rotation of grazing areas, fences with water points, herds in the pen usually without human control, only in the turn of the pen by the herdsmen to drive the herd to another fence in the plan. Most of the pastoral areas in China are in remote areas, sparsely populated, far from the power grid, no AC power can be used, so it is a broad world to promote the application of solar cells. The use of solar cells can solve the problem of power supply for small equipment in agriculture and animal husbandry.

 

Electric fence through a high-voltage pulse generator to the ordinary power supply current into high-voltage main pulse current and then sent to the fence wire, when the livestock corner touch the wire on the fence, will be subject to high-voltage current shock, quickly avoid, so that after being hit many times livestock will establish a conditioned reflex, and later will not dare to touch the wire on the fence.

 

 

(4) Black light power

Pests are the great enemy of agriculture and forestry production, and eliminating pests to protect crops and forests is one of the important measures to improve agriculture and forestry production. The main methods to prevent pests are biological control, biocontrol and physical control. Its main advantages are: it can eliminate a large number of effective insect sources, trap many kinds of pests, large number of females, high egg rate; it can reduce the amount of pesticides, reduce pollution, and help protect natural enemies; it can save the expenses of pesticides, reduce labor, and reduce costs; it does little harm to beneficial insects and natural enemies, and has no contradiction with biological control.

 

Solar black light power supply consists of the following five parts:

① solar cells;

② battery;

③ DC converter;

④ black light tube;

⑤ bracket and insect collector

 

(5) radio, television, communications equipment power supply in remote mountainous areas, scattered islands, vast grasslands application of radio, television, communications equipment is very important and necessary for the development of industrial and agricultural production, improve people's lives, consolidate national defense, strengthen national unity has great significance. And these areas, generally no AC power can be used, so the power supply of these devices to ensure that the key issue has become prominent.

 

(6) PV pumping irrigation system

Most areas of Tibet, southern Xinjiang, Qinghai and western Inner Mongolia in China are dry and rainy, rivers are scarce, surface water is lacking, groundwater is buried more than 10m deep, but the reserves are rich, and these areas are rich in solar energy resources, the irrigation season is the peak of the sun, so it is very favorable to use solar energy to lift water for irrigation. Photovoltaic water pumping system mainly includes three parts: solar cell, water pump, water storage and distribution system.

 

solar cell system

 

Photovoltaic pumping irrigation systems can generally be used for occasions where water is required, and can be set up in a decentralized manner or close to water-using locations. The selection of parameters for irrigation equipment depends on the solar radiation, temperature, pump output, and external conditions in terms of mechanical technology at specific locations.

 

(7) The application of solar cells in cathodic protection

Generally buried natural gas or other pipelines in the underground in the soil characteristics similar to the electrolyte long-term immersion in the environment will produce corrosion, seriously affecting its safety and service life, especially when the long distance transmission, due to the long pipeline, maintenance and inspection are more difficult. In order to prevent or slow down the corrosion of the pipeline, when laying the pipeline, it is possible to install a small solar panel as a DC power source at a certain distance, which together with the auxiliary anode to protect the cathode of the metal pipeline by means of a sacrificial anode. Therefore, for a metallic pipeline of several tens of kilometers or longer to be protected by sections, using solar arrays to provide DC voltage is the most effective and economical method.

Metals used under various conditions are generally subject to two types of corrosion, namely chemical and electrochemical corrosion. Chemical corrosion is caused when the metal and the medium in contact with the chemical action, it is characterized by the action is carried out without current generation; electrochemical corrosion is another extremely broad category of corrosion, it is due to the metal surface and electrolyte solution such as water and soil) contact, the potential on the metal surface is not the same, there are places with high potential, some places with low potential, the result is the formation of corrosion primary cells.

 

Therefore, the electrochemical corrosion process can be seen as consisting of the following three links: 

① At the cathode, the metal dissolves into metal ions and enters the solution, that is, MeMe++e- (anodic process).

② Electrons flow from the anode to the cathode through metal.

③ At the cathode, the flowing electrons are accepted by the substance (d) that can absorb electrons in the solution, e-+D[De-] (cathode process)

 

The above three links are interrelated and indispensable. If one of the links stops, the whole corrosion process also stops. It connects the negative pole of the DC power supply to the protected metal pipe, so that the whole surface of the protected metal is the cathode, and connects the positive pole to the auxiliary anode composed of insoluble materials such as graphite, high silicon iron, carbon ferrite, lead silver alloy and platinum plated titanium. When the applied driving voltage is higher than the minimum protection potential required by the metal, The pipeline is within the current protection range. For remote areas, solar cells as DC source is both economical and convenient.

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