State Grid Corporation of China

Xuzhou College of Industrial Technology

Southeast University

State Grid Jiangsu Electric Power Company

Huainan Power Supply Company of State Grid Anhui Electric Power Corporation

Nanjing Nari Group Corporation

Yangzhou Power Supply Branch of State Grid Jiangsu Electric Power Co., Ltd.

Peipei Li

Yunhui Xu

Zaixue Wang

Houluo Cong

Guiying Zhao

Yanan Zang

Wu Chen

Yang Xu

Yu Chen

Peng Sun

Shuaishuai Song

Zhong Liu

Zhongguang Wang

Feng Liu

Ming Xu

Renjie Sui

Genchun Liu

Xin Zhan

Jiansong Li

Jinming Cheng

Dajun Ma

Yue Cao

Ningming Guo

Yating Xu

The invention discloses a method for manufacturing a bulletproof and explosion-proof tubeless tire, first, the innerliner is attached to the carcass cord ply to make the carcass innerliner, and then the steel wire braided layers and the intermediate rubber layers are laminated to each other to make an explosion-proof layer, using a first stage building machine to complete the first stage forming of the carcass innerliner, explosion-proof layer and belt to obtain a semi-finished embryo, and then using a second stage building machine, the semi-finished embryo and the tread slab base are formed in the second stage to obtain the embryo, which is baked and stored for 8˜96 h and then vulcanised to obtain a bulletproof and explosion-proof tire; through the second stage forming process, the invention solves the problem that the explosion-proof layer is difficult to form due to the excessively hard metal material when making the embryo.

Method for manufacturing a bulletproof and explosionproof tubeless tire

Provided herein is a protective rubber track shoe for an excavator, which includes a first-stage rubber mix and a second-stage rubber mix. The first-stage rubber mix consists of a natural rubber, a chloroprene rubber, a butadiene rubber, a styrene-butadiene rubber, a tire reclaim rubber, a 120-mesh rubber powder, zinc oxide, stearic acid, an anti-aging agent 3100, an anti-aging agent CTU, paraffin wax, an intermediate super abrasion furnace carbon black and an aromatic oil. The second-stage rubber mix consists of the first-stage rubber mix, sulfur, an accelerator CZ and an auxiliary agent.

Protective rubber track shoes for excavator

The present disclosure relates to a submodule topology circuit for a modular multilevel converter and a method for controlling same. The submodule topology comprises an inlet port and an outlet port, at least two half-bridge submodules, a plurality of first switching devices, a plurality of thyristors and a plurality of diodes, wherein the at least two half-bridges are connected in series and are provided between the inlet port and the outlet port, and each of the half-bridge submodules is provided with an input port, a first output port and a second output port.

Submodule topology circuit for modular multilevel converter and method for controlling same

The present invention discloses a preparation method of scribing rubber cement of a tire tread. The scribing rubber cement of the tire tread is prepared from the following raw materials in parts by weight: 100 parts of natural rubber; 3.5 to 4.5 parts of zinc oxide; 1.5 to 2.5 parts of stearic acid; 15 to 25 parts of titanium white; 2.5 to 3.5 parts of insoluble sulfur; 0.9 to 1.1 parts of accelerant DM; 0.9 to 1.1 parts of rosin; and 15 to 25 parts of color masterbatch. The preparation method of the scribing rubber cement comprises the following steps: step 1) preparing rubber compound; and step 2) preparing the scribing rubber cement. The scribing rubber cement of the tire tread prepared by the present invention has high aesthetic degree and does not influence the product quality.

Preparation method of scribing rubber cement of tire tread

The invention discloses a fault point locating method of hybrid lines based on analysis of comprehensive characteristics of single-end electric quantity and transient travelling waves, which mainly includes steps: phase-model transformation; looking up initial time of failure; extracting timing window data after the initial time; searching a reflected wave from the fault point and a reflected wave from a demarcation point in the timing window; and judging properties of the reflected waves. After failure of a hybrid line with cable and overhead line, by identifying and comparing comprehensive characteristics of the reflected wave from the fault point, primary and secondary reflected waves from the demarcation point in the single-end transient voltage and current travelling waves, it is rapidly judged whether the fault point is located in the overhead line segment or the cable segment, which is used to assist in switching decision for line reclosing.

Fault point locating method of hybrid lines based on analysis of comprehensive characteristics of single-end electric quantity and transient travelling waves

Growing community of inventors

Jiangsu, China

Peipei Li