Yankee hood is very important for paper fans, so what is the structure and equipment debugging of high-speed hot Yankee hood?
>>>>
Equipment structure
Yankee hood is composed of high temperature and high speed impact gas hood and heat circulation system outside the hood.
1. The hood skeleton is welded with carbon structural steel and has excellent mechanical strength. The inner and outer panels are made of stainless steel or galvanized steel plate with strong high temperature and corrosion resistance (according to the customer's paper machine), and the inner and outer panels are filled with centrifugal glass fiber thermal insulation cotton, so that the cover body has good thermal insulation performance to prevent heat loss.
2. The nozzle and air duct are made of stainless steel plate material, which is specially designed and carefully processed, so that the nozzle can work under high temperature conditions for a long time without deformation and ensure uniform wind.
3. The gas hood adopts the combination form of left and right half hood, so that the equipment has the characteristics of simple installation and easy maintenance.
4. The use of fluid computing software calculation and simulation, scientific design and layout of the hood circulation air pipe, scientific selection of fans, fully optimize the flow field distribution of the system, the selection of advanced heat recovery device, to achieve uniform air supply and save system energy consumption.
Equipment installation
1. Check whether related lifting devices and equipment are firm and reliable before hoisting to prevent equipment damage due to hoisting.
2. Cover body installation Pay attention to adjusting the height and position of the frame to ensure that the distance between the arc of the gas cover nozzle and the cylinder simple meets the technical requirements and the spacing is equal everywhere.
3. The support frame (seat) of Yanke gas hood must be firmly installed, and the sliding device must rotate flexibly without jamming interference.
4. The air duct is connected tightly and firmly, and should be strengthened and supported, and heat preservation treatment should be done.
5. The fan shall be constructed according to the relevant installation technical requirements of the fan.
Equipment debugging.
1. Cover body debugging steps: ① Check whether the connections are firmly and reliably connected, whether the sliding device is greasing, whether the electrical power line is safe and reliable, and whether the instruments and meters work normally (especially whether the cylinder pressure reaches 0.4~0.6Mpa); ② First debug the left and right half hoods by point-shooting method, that is, open and close the left half hoods respectively, and then open and close the right half hoods respectively, that is, debug the half hoods respectively; ③ Again check whether the gas pipe is connected correctly to prevent the gas pipe of the left and right half hood from being cross-connected; ④ The point method opens (closes) the left half hood and the right half hood again;⑤Open the left and right air hood successively, and then close the left and right half air hood successively; ⑥ At the same time, all open the left and right half air hood.
2. Fan commissioning steps: ①Close the inlet air regulating door and open the outlet air regulating door slightly; ② Check the clearance size of each part of the fan unit, the rotating part is not allowed to collide, and all fixing bolts should be tightened; ③ Check whether the bearing oil is sufficient and intact; ④ For the coupling or the fan with drive, check whether the coupling or pulley and belt are installed reliably, and whether the coaxial degree of the fan shaft and the motor meet the technical regulations; ⑤For fans with water cooling bearings, check whether the water supply of the cooling water pipe is good; ⑥ Check whether the electrical wiring and instrument installation is correct and easy to use; ⑦ In the motor starting process, should strictly check the operation of the unit, found that there is a strong noise or drama. Strong vibration, should immediately stop, check its cause, and then eliminate; ⑧When the fan characteristics reach the normal state, gradually open the inlet regulating door until the specified load is met.
Shandong Fengxin Technology Development Co., Ltd. is a company specializing in the development, research and production of paper ventilation, drying, energy saving technology and equipment, and has achieved good results in the field of paper ventilation, drying and energy saving for many years. Fengxin closed air hood system design mainly includes the drying part closed air hood, air hood in various functions of the blower, waste heat recovery device, paper machine mesh moisture, high-speed Yanke hot air hood, all kinds of coating drying boxes, workshop ventilation system and supporting equipment.