The long tail effect of photovoltaics shows that the long-term prospects of the global market are promising

The PV on-grid price will be introduced, and the domestic market will start quickly: the National Development and Reform Commission will launch a PV on-grid price on August 1, and the domestic PV industry development mechanism will undergo major changes. Previously, it mainly subsidized the photovoltaic industry through concession bidding and Golden Sun Engineering. In the future, it will adopt a market-oriented mechanism to promote the development of the photovoltaic industry. Germany introduced the on-grid tariff method in 2000, and the growth rate of newly installed photovoltaic capacity reached 230%. It is expected that the domestic PV industry will also achieve rapid growth. The northwestern region is rich in sunshine. At present, the on-grid price is higher than the bid price of the concession bidding last year. With the decline of component cost, the domestic photovoltaic power station can achieve meager profit. It is expected that the power group will increase its investment enthusiasm. In addition, the photovoltaic power station has good output characteristics and peak power generation. The peak year of electricity is small, and the impact on power grid peaking and power grid is small, and it is easy to access. European policy tends to be stable, the long-tail effect of the photovoltaic market is emerging, and the long-term prospects for the global PV market are promising. In the first half of the year, the German and Italian PV subsidy reduction policies were uncertain, resulting in stagnant installed capacity and sharply shrinking demand. The current German and Italian policies have been determined, and with the sharp decline in component prices in the first half of the year, the Italian PV power plant returns to 20%, Germany also It will reach about 10%, and it is expected that the installation demand will improve in the second half of the year. The long tail effect of the PV market is emerging, and PV demand in China, the US, Japan and some other emerging markets will grow rapidly, changing the situation in Europe in the past by more than 80%. According to the EPIA, it is expected that by 2015, the global installed capacity will reach 44GW, and the long-term prospects for the PV market are promising. The competition pattern of the photovoltaic industry chain: the concentration of polysilicon will increase, and the replacement of photovoltaic equipment will continue. At present, polysilicon production capacity continues to expand. It is estimated that the total production capacity of GCL, OCI, Wacker and Hemlock will reach 200,000 tons by the top four manufacturers in 2012, exceeding the annual demand of 170,000 tons in 2010. With the expansion of polysilicon leading capacity expansion, The concentration of polysilicon industry in the future may continue to increase. The battery and component industry has low entry barriers and serious product homogenization. At present, overcapacity may take 2-3 years to digest; photovoltaic equipment single crystal furnace has been fully realized, and the yield of polycrystalline silicon ingot furnace is gradually increasing. Single crystal technology is also being developed and tested, and it is expected to be localized in the future.

Other Parts

The structure of the core barrel is generally divided into single - acting double core tube and most of the fishing apparatus. The double tube section consists of an outer tube assembly and an inner tube assembly. The outer pipe assembly includes; The main structure and working principle of the cartridge stopper, cartridge chamber, stable joint outer pipe, diamond reamer and diamond bit are as follows:

(1) Spear structure is composed of spear head and recovery spring. When coring, the fishing device is lowered to the upper part of the inner tube assembly in the drill pipe, and the fishing hook grasps the fishing spear, lifts the fishing device up, picks up the recycling card barrel, and inwardly compressing the cartridge card, so that the inner tube assembly and the outer tube are separated, so that the inner tube assembly is lifted up.

(2) The clip structure is mainly composed of the clip frame, clip, spring and other components. Its function is that when the inner tube sits on the outer tube, the clip expands with the help of the elastic force of the expansion spring and sticks to the inner wall of the clip chamber, so that the drilling tool can achieve positioning.

(3) Buffer structure by spring, locking mother, split pin composition. Protecting the inner tube when pulling the core.

(4) Single action structure is realized by two pairs of thrust bearings.

(5) Adjust the length of the inner pipe assembly and the outer pipe assembly of the structure, and fine-tune the lower shaft and the locking mother to achieve the gap required by the end of the spring seat and the step inside the drill bit.

(6) The fishing structure, also known as the fishing device, is mainly composed of fishing hook, hammer and safety rope. The fishing hook is used to hold the spearhead while fishing the inner pipe, and the weight is used to speed up the fishing device's descent to save fishing time. The safety rope is a thin rope. When the inner pipe is stuck for some reason and cannot be lifted, the safety rope can be forcefully lifted and then the drill can be lifted.

Other Parts,Spearhead Base,Compression Spin,Core Lifter

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