The Experts below are selected from a list of 189 Experts worldwide ranked by ideXlab platform

Wang Feng - One of the best experts on this subject based on the ideXlab platform.

  • Comparison of hydraulic performance of round pipe-shaped and corridor-shaped air-cushioned surge tank
    Journal of Hohai University, 2012
    Co-Authors: Wang Feng
    Abstract:

    Considering the complexity and Construction Difficulty of the anti-leakage structure of a corridor-shaped air-cushioned surge tank,a new type of air-cushioned surge tank,here called the round pipe-shaped surge tank,is introduced as an alternative in this paper.Taking an air-cushioned surge tank at a hydropower station in Sichuan Province as an example,the differences in the hydraulic performance and operating stability between the two design schemes based on the transient process simulation and stability analysis were explored.The results show that as the cross-sectional area of the tanks was the same,the round pipe-shaped surge tank had better stability with small fluctuation.Meanwhile,the amplitude value of the water level in the tank was smaller,the maximum gas pressure and maximum water pressure in the spiral case inlet were relatively smaller,and,thus,the round pipe-shaped surge tank had a relatively better hydraulic performance.

  • COMPLETE-SET Construction TECHNIQUE OF REINFORCED CONCRETE LINING WALL OF LATERAL WALL IN BASEMENT
    Architecture Technology, 2011
    Co-Authors: Wang Feng
    Abstract:

    In the East Ocean Center engineering,the north and south external walls on the B4 floor cling to the lateral wall of the supporting pile,great Construction Difficulty is encountered because there is no space for external Construction;special Construction technologies,such as reinforced concrete lining wall is made along the lateral wall of the supporting pile,external wall waterproof in the basement is carried out by using external prevention and internal pasting method and unilateral formwork technique is adopted for the steel pipe triangular truss on external wall in the basement,etc.,to successfully solve the Construction difficulties.

  • Comprehensive Water Prevention Technology in Vertical Shaft Construction in Gaohe Mine
    2010
    Co-Authors: Wang Feng
    Abstract:

    Freezing Construction was used in the aquifer for vertical shaft in Gaohe mine.Backfill grouting was used to control water inrush in mine shaft.The Construction Difficulty of the aquifer was lowered,the pressure on the shaft was reduced,the water inrush dropped by up to 90%.The technology created favorable conditions for the further Construction.

Wenjing Guo - One of the best experts on this subject based on the ideXlab platform.

  • Uncertain Hybrid Multiple Attribute Group Decision of Offshore Wind Power Transmission Mode Based on theVIKOR Method
    Sustainability, 2019
    Co-Authors: Nansheng Pang, Wenjing Guo
    Abstract:

    With the increasing scale of offshore wind power, large-capacity and long-distance offshore wind power will be a trend in the future development of wind power. However, compared with onshore wind power transmission, offshore wind power transmission is more difficult and costly. Therefore, it is of great practical significance and urgency to select the appropriate power transmission mode to realize the long-distance transmission of large-capacity offshore wind power. Since the selection of offshore wind power transmission mode is a multiple attribute decision making problem, in this paper, the technical characteristics of high voltage alternating current (HVAC) and voltage source converter based on high voltage direct current (VSC-HVDC) that are already in use and hybrid HVDC that is possible to be used in offshore wind power transmission in the future are discussed. Based on this analysis, the reliability, economy and Construction Difficulty of offshore wind power transmission mode are systematically analyzed, and VIKOR method is applied to group decision-making for the selection of offshore wind power transmission mode. The main contributions of this paper are as follows: (1) the characteristics of large-capacity and long-distance offshore wind power transmission are studied, and the evaluation system with multiple indexes including a large number of qualitative indexes is constructed from the technical, economic and social aspects. In order to deal with difficult problems of fuzzy information, interval numbers, language variables, intuitionistic fuzzy numbers and other data types are used to deal with them effectively. (2) In the VIKOR method, because the expert weights are unknown in group decision-making, the expert trust function is used to objectively determine the weight of each expert. (3) The group decision-making analysis of actual case of offshore wind power plant is carried out by using expert knowledge and VIKOR method. The case shows that this method is simple, reasonable and practical.

Lin Zhi-yo - One of the best experts on this subject based on the ideXlab platform.

Nansheng Pang - One of the best experts on this subject based on the ideXlab platform.

  • Uncertain Hybrid Multiple Attribute Group Decision of Offshore Wind Power Transmission Mode Based on theVIKOR Method
    Sustainability, 2019
    Co-Authors: Nansheng Pang, Wenjing Guo
    Abstract:

    With the increasing scale of offshore wind power, large-capacity and long-distance offshore wind power will be a trend in the future development of wind power. However, compared with onshore wind power transmission, offshore wind power transmission is more difficult and costly. Therefore, it is of great practical significance and urgency to select the appropriate power transmission mode to realize the long-distance transmission of large-capacity offshore wind power. Since the selection of offshore wind power transmission mode is a multiple attribute decision making problem, in this paper, the technical characteristics of high voltage alternating current (HVAC) and voltage source converter based on high voltage direct current (VSC-HVDC) that are already in use and hybrid HVDC that is possible to be used in offshore wind power transmission in the future are discussed. Based on this analysis, the reliability, economy and Construction Difficulty of offshore wind power transmission mode are systematically analyzed, and VIKOR method is applied to group decision-making for the selection of offshore wind power transmission mode. The main contributions of this paper are as follows: (1) the characteristics of large-capacity and long-distance offshore wind power transmission are studied, and the evaluation system with multiple indexes including a large number of qualitative indexes is constructed from the technical, economic and social aspects. In order to deal with difficult problems of fuzzy information, interval numbers, language variables, intuitionistic fuzzy numbers and other data types are used to deal with them effectively. (2) In the VIKOR method, because the expert weights are unknown in group decision-making, the expert trust function is used to objectively determine the weight of each expert. (3) The group decision-making analysis of actual case of offshore wind power plant is carried out by using expert knowledge and VIKOR method. The case shows that this method is simple, reasonable and practical.

Hao Ning - One of the best experts on this subject based on the ideXlab platform.

  • reciprocating type insulating and fireproof cabin penetrating structure of floating production storage and offloading fpso device ship
    2017
    Co-Authors: Hao Ning, Zhang Yong
    Abstract:

    The invention discloses a reciprocating type insulating and fireproof cabin penetrating structure of a floating production, storage and offloading (FPSO) device ship. The reciprocating type insulating and fireproof cabin penetrating structure comprises a supporting plate (1), positioning plates (2), a pressing plate (5), fixing bolts (7), a first web (8), a second web (9) and a drum (10). The supporting plate (1) is fixed to one side of the drum (10). The positioning plates (2) are fixed to the supporting plate (1) through the fixing bolts (7). The first web (8), the second web (9) and the drum (10) are welded to one another and fixed to a cabin wall (11). The pressing plate (5), the first web (8), the second web (9) and the drum (10) jointly form a stuffing box chamber. After the fireproof cabin penetrating structure is used, the outlet pipeline connecting problem caused by pump vibration can be solved, the fireproof and insulation requirements of a cabin A60 can be met, mounting is easy and reliable, repair is easy, a fireproof and insulating layer can be conveniently replaced, the Construction Difficulty is lowered, safety guarantee is improved, production operation efficiency is improved, and the cost is reduced.

  • floating production storage and offloading device power module fuel gas two layer pipe support
    2014
    Co-Authors: Hao Ning, Li Zhongqi, Cao Jianwei, Zhang Bo
    Abstract:

    The utility model discloses a floating production storage and offloading device power module fuel gas two-layer pipe support which comprises a circular positioning block (1) and a Teflon inside liner (2). The circular positioning block (1) is fixed to the outer wall of an inner pipe (3) of a double-layer pipe, and the Teflon inside liner (2) is installed in the circular positioning block (1). After the floating production storage and offloading device power module fuel gas two-layer pipe support is used, inner pipe rigidity can be increased, explosion caused when sparks are produced by collision and friction between the inner wall of an outer pipe and a metal support can be prevented, the Construction Difficulty is reduced, the purchasing cycle is shortened, the cost is reduced, and therefore working efficiency, safety, reliability and economical efficiency are improved.