This paper introduces the classification of gas-fired steam boiler and the precision of hydraulic press. 1. Industrial gas steam boiler: for industrial production and heating, etc. Most of them are low-parameter, small-capacity boilers, fire bed combustion and low thermal efficiency. 2, utility boilers: mainly used for power generation. Most of them are high-parameter, large-capacity boilers, fire chamber combustion and high efficiency. 3, marine boilers: used in ship power. This kind of boiler is generally low and medium parameters, fuel, small volume, light weight, easy to move. 4, locomotive boiler: the main use is locomotive power. The overall parameter is low, belongs to small capacity pot Furnace, fire bed combustion, require compact structure, movable. Gas-fired steam boilers are classified according to the types of working fluids and output states, and can be divided into: 1. Steam boilers: steam for export working fluids. 2. Hot dzl water boilers: export working fluids for hot water. 3. Special working fluid boilers: outlet for special working fluids, Some organic matter, etc. Three gas-fired steam boilers can be divided into: 1. Ultra-high pressure boilers: outlet steam pressure is 14MPA (140kgf/cm) .2, high-pressure boiler: outlet steam pressure is 10MPA (100kgf/cm) .3, Secondary medium pressure boiler: outlet working fluid pressure is 2. 5MPa.4, medium pressure boiler: outlet steam pressure is 3.9MPa (39kgf/cm) .5, supercritical pressure boiler: outlet steam pressure is about 25MPa (about 250kgf/cm) .6, Subcritical pressure boiler: outlet steam pressure is 17MPa (170kgfxcm?) .7, low pressure boiler: outlet working fluid pressure (gauge pressure) is less than or equal to 1.3MPa (13kgf/cm). The precision of hydraulic press determines the precision of parts. However, it is not very accurate to use static precision only to measure the precision of press. That's because, uh, the pressure machine The size of the mechanical strength of the body has a great impact on the stamping accuracy. If the strength of the press itself is low, it will cause the deformation of the pressure machine tool ao at the moment of reaching the blanking pressure. In this way, even if the above conditions are adjusted very well in the static state, the deformation of the sample bed will be caused by the strength effect and there will be differences in the deformation of the sample bed. It can be seen that the precision of the press has a great relationship with the strength, and the size of the strength has a great impact on the stamping work, so in the blanking high-precision workpiece and the cold stamping production with strong continuity, the higher precision should be chosen. And rigid press.
Fangkuai Group has more than 60 independent intellectual property rights, advanced clean fuel boiler manufacturing technology, and jointly established a clean fuel boiler production, research and research cooperation base with Tsinghua University and Xi'an Jiaotong University. An enterprise with a R & D and test center for clean fuel boilers. The thermal efficiency of “Fangkuai” boilers can reach 107%, which has been included in the national special equipment energy-saving catalog. The company developed ultra-low nitrogen full premixed combustion condensing boilers and ultra low nitrogen emission fuel gas boilers, which are developed by the company using Ultran condensation technology.
Food factory operating costs Steam Boiler: food plant steam operating cost boiler analysis, including the sum of the electricity, natural gas costs, demineralized water (dose), labor costs and other costs required for the principle of conservation of the energy, the thermal efficiency of the boiler calculation is running at full capacity 97.94% . (1) The natural gas fuel heating value: Qdw = 8500 kcal / Nm3 = consumption of natural gas production of 2 tons of steam heat (heat value gas boiler thermal efficiency x) = 2,60,104kCal / h (8500kCal / Nm, 97.94%), 144.1 nm / h, and then consider the practical use of heat loss of about 3.8%, such as heat and water. A = 144.1 / (1-3.8%) = Cost 149.75,150Nm3 / h of gas per hour is run B = 150nm / h, 4.387 yuan / Nm (Yantai Industrial gas prices) 658 yuan / hr.
10 tons per hour steam boiler gas output 10 tons of high temperature steam, for use on large-scale industrial production of the more common. Everyone in the purchase of the boiler, I do not understand a lot of time due to the boiler production process, easy to be deceived bad salespeople. Today, fast boiler will unveil the manufacturing process of the boiler, as we talk about, the main process gas steam boiler expect from the factory.