The compressor gas seal structure is mainly composed of a sealing ring, a baffle plate, a retaining ring, a pressing ring and a spring. When the sealing ring is worn, the spring force compensates the wear of the sealing ring through the pressing ring. As the seal of the structure wears, the spring force compensates for wear of the seal by the compression ring. The improved steam blockage seal should take into account the changes in the working conditions of the machine when determining the pressure of each chamber. In the operating range of the compressor, no matter what happens, there should be room for gas leakage outside the machine. When the suction pressure of the compressor fluctuates, the steam pressure in chamber b must change accordingly, and the pumping capacity of the air extractor in chamber c must be changed accordingly, that is, the design of the air extractor should use a wider operating range. The material selection of the labyrinth seal is determined according to the usage. In the catalytic cracking unit, the gas transported by the air press contains hydrogen sulfide, and the material of the labyrinth seal should avoid the use of copper alloy. According to the temperature condition of steam (about 254 °C), the inner labyrinth seal is made of stainless steel, and the atmospheric side can be made of cast aluminum. The aspirator and steam flow control block the flow of steam with orifice control, which is simple and reliable. The power gas used in the aspirator can be rich in medium pressure steam in the refinery. The pressure should not be less than 0.8MPa. The air and water vapor extracted by the aspirator can be vented to the torch. If the temperature of the steam is too high, the material of the labyrinth seal will be selected as a problem. In addition, the shaft is bent after being locally heated, and thus causes vibration problems. When high temperature steam is used for this purpose, the blowing points should be evenly distributed along the circumference. Each sealing chamber shall be provided with a drain valve to exclude condensate. Since blowing steam generally produces condensate on the wall, it is necessary to consider the sewage disposal measures.
3.0 Ton Spider Crane
specifications 2.98t Maximum working radius 8.8m×0.25t Maximum elevation on the ground 9.2mX 1t Maximum underground elevation 10mX1t (4 rope) 20mX1t (2 rope) 40mX0.74t (1 rope) Roll up device Lift hook up speed 0-8m / min (4 rope) Steel wire rope specifications Φ10mm×50m retractor device Hanging arm form 5-section boom, pentagonal structure Hanging arm length / time 3.1m-9.2m/20sec Up and down device Arm angle / time 0-78
Hubei Ruiyate Automobile co.,ltd., located in the famous ancient "bells" music of the township, the capital of special vehicles -- draws in hubei province. Suizhou is located in the north of hubei province, the Yangtze river and the huaihe river interchange, east ChengWuHan, xiangyang, xinyang in the north west, south of jingzhou, the throat "" surf, the conjugate JingYu han. Suizhou is "north ordos town", "north gate" opening to the outside world, hubei province, is the national implementation of the western development strategy important relay station and transfer station from east to west. 3.0 Ton Spider Crane,Spider Crane Truck,3Ton Spider Crane Truck,5 Section Spider Crane Truck Hubei ruiyate Automobile Co.,Ltd , https://www.ruiyate-automobile.com
This company mainly produces and sales overhead working truck series, the series of modern municipal engineering, pavement maintenance work series, the series of RV. The products sell well both at home and abroad, and the market prospect is very broad, at the same time cater to the development trend of special vehicles in our country.