4 Technical and economic analysis and socio-economic benefit analysis
4.1 Technical and economic analysis The main units of domestic thermal power generation have increased from 200MW to 300MW and 600MW, and the parameter level has developed from ultra-high pressure and subcritical to supercritical and ultra supercritical. The main problem of the boiler, steam turbine body and pipeline drain valve under the existing domestic technical conditions is internal leakage. High grade working medium goes directly to the low end without doing work, resulting in a large amount of heat loss. The metal pneumatic ball valve developed in this project can well solve this problem with its excellent sealing performance, special structure and excellent durability.
4.2 In terms of economic benefit analysis, only energy consumption is saved, and the comprehensive application of this product can save 5 million yuan of standard coal for Liaoning Huadian Tieling Power Generation Co., Ltd. every year; It is popularized and used in the power industry, and 600 sets of high-temperature and high-pressure metal seat pneumatic ball valves are produced every year, which can achieve a sales income of 9 million yuan and a profit of 2 million yuan; As the cost is reduced, the application scope will be expanded accordingly, which can indirectly create more benefits for the society.
4.3 The overall fund demand of the project to solve the problem of scientific research funds is 4 million yuan, of which 3 million yuan is self raised, accounting for 75% of the total funds, and 1 million yuan is applied for special funds, accounting for 25% of the total funds. The special funds applied are mainly used for the optimization and transformation of thermal spraying equipment and a large number of industrial comparative tests and parameter measurement. In this process, the fund budget should be carried out scientifically to ensure the solution of the overall fund problem.

Function difference between corrugated compensator and non-metallic compensator
With the growth of the compensator industry, corrugated compensators and non-metallic compensators have also been well applied and recognized by all walks of life, helping many working conditions operate smoothly. The following section will share with you the difference between corrugated compensators and non-metallic compensators.
First of all, understand the bellows compensator: the manufacture of the bellows compensator belongs to the deep processing technology of extremely thin wall pipes, not only to achieve high dimensional accuracy. It also needs to meet the various functions requested. He touches on various processes and technologies such as close plastic processing of materials, close welding, vacuum bright heat treatment, close shearing, etc. These processes and technologies all affect the function and quality of bellows. In addition to the design factors of bellows, they largely depend on the manufacturing process. The manufacturing process of the advanced generation is to improve the quality of bellows, Important guarantee of function.
Then we know the following non-metallic compensators: non-metallic structural compensators have full flexibility, which can perfectly meet the relative displacement of the boiler comb plate and slag well, and successfully deal with the problem of boiler thermal compensation. At the same time, in view of the high temperature in the boiler furnace, aluminum silicate fiber blanket that can withstand high temperature of 1000 ℃ is used as the insulation material in this design, In addition, a double-layer thermal insulation layer is set to ensure the thermal insulation. In order to prevent the aluminum silicate fiber blanket from being torn and crushed in the application process, the external wrapping and sewing are stopped with stainless steel wire mesh and wired ceramic fiber cloth during the construction of the thermal insulation layer, effectively ensuring the integrity of the thermal insulation layer in the application process, The tightness of the whole compensator is completed by the external fabric skin.
Finally, it is concluded that both corrugated compensator and non-metallic compensator have their own interests. They are suitable for different construction conditions, and they all try their best to deal with various conditions to ensure the smooth operation of each condition.