30results about How to "Improve weak links" patented technology

The invention discloses a high-temperature-resistant rubber sealing ring for automobiles. The high-temperature-resistant rubber sealing ring comprises the following raw materials in parts by weight: 70-90 parts of ethylene-propylene-diene-terpolymer rubber, 10-30 parts of chloroprene rubber, 1-4 parts of an anti-aging agent, 0.8-1.5 parts of active zinc oxide, 0.2-0.4 part of magnesium oxide, 0.5-1.0 part of calcium oxide, 0.6-1.5 parts of butyltin mercaptide, 30-40 parts of modified kaolin, 10-15 parts of magnesium methacrylate, 1-3 parts of a promoter, 6-10 parts of soybean oil, 1-2 parts of ethyl methacrylate, 40-80 parts of paraffin oil, 0.2-0.5 part of triallyl phosphate, 1.0-1.5 parts of a crosslinking agent BIBP, 0.5-1.2 parts of an assistant crosslinking agent TAIC, 0.3-0.5 part of microcrystalline wax, 2-3 parts of a vulcanizing agent and 0.5-1 part of phthalic anhydride. The sealing ring disclosed by the invention has strong weather resistance, corrosion resistance and ozone resistance, and can be suitable for being used as the high-temperature-resistant rubber sealing ring for the automobiles.

The invention relates to a method for sealing an edge of a plastic cellular sandwich board and an apparatus thereof. According to the invention, an edge sealing zone is arranged outside the contour of a product, in the edge sealing zone, a high-temperature part is inserted between an upper skin and a lower skin of the edge, honeycomb is removed through fusing, the upper skin and the lower skin are softened, and then the upper skin and the lower skin are turned to a center, so that edge sealing of the product is realized. According to the edge sealing method, the product edge is full and firm, the product edge intensity is enhanced, the problem of edge enclosing of a PPHC material is solved, and an application of the PPHC material on a spare wheel cover plate is promoted.

The present invention relates to an offshore wind farm cluster electrical system planning method. On the basis of providing an onshore power grid structure and all possible grid connection points, a specific access capacity of each grid connection point and onshore power grid expansion are optimized according to a total access capacity of an offshore wind farm cluster by using an artificial fish school algorithm; wind farm clustering is performed according to the access capacity of each grid connection point obtained through optimization at an upper layer, and offshore transformer substation locating and sizing is optimized by using a genetic algorithm; unified topological optimization is performed according to a transformer substation locating and sizing result at a second layer, to obtain a new onshore grid connection point capacity and expansion result, the new onshore grid connection point capacity and expansion result is redelivered to a fitness function of a second-layer geneticalgorithm, to guide offshore transformer substation locating and sizing, and repeated iteration is performed till the onshore power grid structure is no longer changed, wherein an output is an optimalsolution. Compared with the prior art, according to the method, both economical efficiency and a reasonable degree after onshore power grid expansion are considered, and an onshore power grid and anoffshore wind farm cluster are integrated, to optimize costs and benefits.

The invention discloses a method for improving safety performance analysis of a nuclear power plant by using an embedded discrete dynamic event tree. File; S2, build DETRIA-A module as basic interface module; S3, build DETRIA-B module as data extraction module; S4, build DETRIA-C module as file management module; S5, build DETRIA-B as RELAP5 startup module -D module; S6, build the DETRIA-E module as the DET simulation module; S7, build the DETRIA-F module as the post-processing module. The invention has the advantage that the dynamic event tree method can be independently coupled with the deterministic security analysis program RELAP5.

The invention relates to a power system weak link identification method based on risk evaluation and belongs to the field of power system analysis. The method includes acquiring fault probability of elements of a power system, a future load curve of the power system, states of the elements and load of nodes of the power system; utilizing a minimum load shedding loss optimization model to judge the failure state of the power system and determining the optimum load shedding quantity of each node under each element sampling state; finishing calculation of risk indicators of the power system through repeated sampling and power system failure state judgment; conducting statistics on the weak link characteristic quantity corresponding to faults of generators and an electric transmission and transformation device, calculating five element weakness recognition indicators of the elements according to the risk indicators and the weak link characteristic quantity and finally sorting the recognition indicator values to recognize the weak link of a generator set and the electric transmission and transformation device. By means of the method, the weak link of the power system is improved, large-area power failure of the power system is prevented, and operation safety of the power system is improved.

The invention discloses a waterproof board device at the connection position of a curtain wall first layer and a structure. The waterproof board device comprises a waterproof board body, wherein the waterproof board body comprises a horizontal board and a first longitudinal board and a second longitudinal board which are perpendicularly connected with the horizontal board; the first longitudinal board is fixedly connected above one side of the horizontal board, and the second longitudinal board is fixedly connected below the other side of the horizontal board; the horizontal board, the first longitudinal board and the second longitudinal board are integrally designed; and the first longitudinal board is fixedly connected with a curtain wall cross beam, the second longitudinal board is fixedly arranged on the outer wall of the structure, and a waterproof coiling material is paved on the outer side of the waterproof board body. An organic waterproof whole is formed by the curtain wall system and the structure, so that the waterproof capacity of the connection position of the curtain wall board and the structure is enhanced, a great amount of manpower and material resources can be saved for the later maintenance of buildings, and the service life of the structure can also be prolonged to a certain extent; the whole construction process is convenient and fast as a whole, the problem of rainwater leakage at the weak position can be effectively avoided, and the weak links of water prevention of the curtain wall can be improved.