Advanced Materials Research Vols. 986-987

Abstract: Traditional transmission line poles and towers have many problems, such as higher corrosion, heavy weight, poor durability and maintenance cost is high. Use of fiber reinforced polymer composites (FRP), based on the theory of poles and towers design, 110 kV FRP pole structure size parameters are calculated, designed the 110 kV FRP pole structure, cross section form and wire grounding scheme. Design results show that compared with traditional pole, 110 kV FRP pole has the characteristics of compact structure, small occupied line corridors.

Abstract: Reactive Powder Concrete (RPC) material has good performances such as great strength, good durability and good stability,Therefore it has higher application value.In this paper, We design and calculate theoretically for the transmission lines of RPC door type double pole , and use the finite element analysis software ANSYS analysis the RPC double pole. Then we compare the results of numerical calculation we have get with the theoretical calculation results .It turned out that the RPC pole in the 500 kv transmission line designed application is feasible.

Abstract: With the development of offshore oil and gas field enters into deep water constantly, subsea production system has become the main development mode in deep water development. Subsea Inline manifold (ILM) is common facilities in subsea production system and is used to gather oil and gas from the side subsea wells. Two subsea ILMs has been adopted in Panyu 35-1/35-2 Gas field with water depth range from 194 to 338 m in South China Sea. System integration test (SIT) is very important for the subsea production facilities. This paper states the flow chart, master equipment, purpose and precautions for each test of ILM SIT, which collects great technology for the development of subsea production system.

Abstract: The temperature field distribution is a most important part we pay close attention to when gas insulated bus is designed. In this paper, finite element method is employed to calculate the temperature rise of gas insulated bus based on fluid governing equation and heat conduction equation. The problem of convection heat transfer between fluid and solid is solved by multiple species transport technique which provides convenience for the calculation of convection heat transfer coefficient. The solution region includes SF₆ gas, ambient air, conduct and tank whose electrical and thermal properties are dependent of temperature. Analysis result illustrates that the thermal field distribution is symmetrical, the lowest temperature is at the bottom of the tank, while the highest temperature is on the top of the conductor.

Abstract: The reactor pressure vessel is an unchangeable component of the light water reactor. To some extent, the life of the pressure vessel depends on the fast neutron fluence. In addition, the fast neutron fluence is an important parameter for radiation protection. So, the fast neutron fluence is one of the main parameters which should be verifying calculated by the reviewers. The verifying calculation of the fast neutron fluence of one reactor pressure vessel is presented in this paper, and the standard deviation between the verifying and designing calculations is lower than 10%. The reasons for the deviation are discussed.

Abstract: According to the demands of greenhouse environmental conditions, this paper examines a solid fuel burning stove applied to compression molding of biomass in order to solve the issues which temperature is too low in greenhouses in winter north of China and carbon dioxide concentration is too low caused by insufficient ventilation number. The burning stove designed with big furnace, no grate and recalculated secondary air. Fuel utilization was improved in the largest degree in this design. Feed amount, feed rate and time are controlled by the PLC system which is adopted to make fuel fully burning, low pollution emissions and more automation. The temperature field and gas flow field changes is simulated by the FLUENT. The temperature of various sections and the formation of nitrogen oxides is reduced by the special design when burning. Experiment shows that sulfur dioxide concentration is about 0.41mg/m³, nitrogen dioxide is about 0.498mg/m³ which have no effect in growth and development of crops. This paper provides theoretic guidance for improving greenhouse conditions.

Abstract: In the seismically active belt, frequent landslides, debris flow, avalanches, rock and soil creep and uneven ground subsidence and other geological disasters regularly cause risk to transmission lines, and even risk the safe operation of the power network. The main reasons of geological disasters occur are: fragile geological environment, heavy rain, the foundation defect, the destruction of vegetation, artificial spoil, unauthorized mining etc. Transmission line route optimization design, suitable use of the new technology in construction and technical innovations are effective measures to prevent geological disasters.

Abstract: Based on that the film filling was simplified to the flat plate model, the heat and mass transfer of the filling zone with fouling in cooling tower were analyzed. The effect of fouling on the performance of filler was analyzed according to the dirt growth model. The work done in this paper can simply forecast changes in cooling tower performance caused by the filler fouling. It will lay a theoretical foundation for accurately calculating the performance coefficient of filler. And it is helpful to solving the problem of no the ripe empirical formula of filler performance with fouling for engineering applications.

Abstract: Remaining useful life (RUL) is of great importance to energy supply systems, such as battery pack. In this paper, an optimization model of RUL for the paralleled battery pack on expansion mode is proposed based on the basic concept of RUL and the capacity fading model. genetic algorithm (GA) is adopted to solve the problem. Case study shows that the battery pack's RUL can be extended by using the optimization model and GA.

Abstract: Crimping is widely used in production of large diameter submerged-arc welding pipes. In order to improve crimping forming quality, it is necessary to analysis deformation characteristic of crimping forming process. So, crimping is analyzed using finite element method. Taking the crimping of X80 steel Φ1219mm×22mm×12000mm welding pipe for instance, the crimping forming process is simulated by finite element (FE) code ABAQUS. In this paper, the simulation data is validated by product and a comparison showed a good agreement with product results. The stress/strain from simulation is discussed. Thus, the results of research provides a basis to improve crimping quality.