阿法拉阀换热器介绍中.ppt

Detta r ett test!,Slide 1,PHE Knowledge 板式换热器,宁 标 19/12/2007,Detta r ett test!,Slide 2,Topics to cover 目录,PHE main components and function 板式换热器主要组成部分和功能 Plates 板片 Gaskets 胶垫 Frames 框架 Technological benefits 技术优势,Detta r ett test!,Slide 3,Manufactory in China 中国组装工厂,Detta r ett test!,Slide 4,Compact HE Market (1350 M) 紧凑型换热器市场份额,Heat Exchanger Market换热器市场份额,Total HE Market (9000 M) 整个换热器市场份额,Detta r ett test!,Slide 5,Most common applications,ESE,Biotech生物技术,Pharmaceutical 制药,Solvent Recovery 溶剂回收,Pasteurization 巴氏杀菌,Evaporation Condensation 蒸发冷凝,CIP,Water System WFI /PW/RO/SO/DI,Heating & Cooling 加热冷却,Beverage饮料,Dairy乳品,Detta r ett test!,Slide 6,A L PHE range,Detta r ett test!,Slide 7,Alfa Laval Heat Exchangers Alfa Laval 换热器,“ESE heat exchangers” 卫生领域常用换热器 Gasketed 胶垫式 Single wall单板式 Double-wall焊接双板式 Gemini 非焊接双板式 Semi-welded半焊式 Tubular管式 Shell & Tube列管式 Tube-in-Tube管套管式 Brazed钎焊式 Copper Brazed铜焊式 Fusion Bonded熔焊式,“Alfa Laval Other Heat Exchangers” 其他类型的换热器 Spiral Compablock ConthermAlfaRex AlfaVap AlfaCond (Air products),Detta r ett test!,Slide 8,Alfa Lavals Historical Base Alfa Laval 公司发展历程,1878,1931,1917,The continuous milk separator developed by Gustaf de Laval Gustaf de Laval 发明牛奶连续分离机,Plate heat exchangers developed to improve pasteurisation process 板式换热器的发明改进了 巴氏杀菌工艺,The first vacuum- operated milking Machine 第一个真空吸奶机,Detta r ett test!,Slide 9,PHE main components 板式换热器主要组成部分和功能,carrying bar 导杆,pressure Plate 压力板,plate with gasket 板片和胶垫,tightening bolts 收紧螺栓,frame plate 框架板,Detta r ett test!,Slide 10,PHE - flow principle板式换热器:交换原理,Click on animation to play again,Detta r ett test!,Slide 11,Plate - corrugation function板片:波纹的作用,Mechanical 机械方面 Provide support points 形成支撑点 Allows thin material 提高强度, 使板片更薄,Detta r ett test!,Slide 12,接触点,Detta r ett test!,Slide 13,Heat Transferred in a HE板式换热器的热交换原理,The temperature profile at one point of the plate wall 板片壁面上任一点的温度剖面图,More turbulence湍流越厉害 Thinner laminar film层流层越薄 Less temperature drop更小的温度损失 Better Heat Transfer更好的热传递,Detta r ett test!,Slide 14,Plate - corrugation and channels 板片: 波纹和通道,Two plate corrugations (L and H)不同的波纹 (L and H),Detta r ett test!,Slide 15,Plate - parallel flow板片:平行流,Detta r ett test!,Slide 16,Plate - parallel flow板片:平行流,Parallel flow advantages平行流的优点 One plate & one gasket只须一种板片和胶垫 Identical plates in the plate pack 用同样的板片组成整套板片组 Rotated 180 to achieve both sides转动180度就可以是下一张板片 Less spares required更小的维修保养空间 Fully supported diagonal板片之间更好地支撑 Higher design pressure or thinner plate material可以达到更高的设计压力和使用更薄的板片 No crossing of nozzles板孔不会磨损,180,Parallel flow configuration is achieved through the chocolate pattern平行流是通过阿法拉伐专利技术巧克力壮分流区来达到更好的传热效果的,Detta r ett test!,Slide 17,Plate - distribution area板片:分流区,Chocolate pattern 巧克力壮分流区 Distributes flow evenly over the plate 均匀地分配流体,Same P for distance A and B A 段和 B段 同样的压差 P Uses a minimum of P for distribution 流体经过分流区压力损失最少 Gives more P for efficient heat transfer 使更多的压力降用来推动更高的湍流,Allows parallel flow configuration 使平行流成为现实 Alfa Laval innovation Alfa Laval 的创新和专利,A,B,Avoids dead-spots in the far corner 避免在远区产生死角 Full use of heat transfer area 充分利用板片的换热面积 No fouling in stagnant zones 不会在死角处形成沉积物的堆积进而对板片腐蚀,Detta r ett test!,Slide 18,Plate materials板片材料,Standard materials and thicknesses 标准材料及厚度 AISI 304 (stainless steel) 304不锈钢 Usually 0.4 or 0.5 mm thickness 通常厚度为0.4或0.5mm Cheapest possible solution 最为便宜 AISI 316 (stainless steel) 316不锈钢 Always 0.5 and 0.6 mm 通常厚度为0.5或0.6mm Some with thicker plates (high-pressure applications) 高压工况时厚度较厚 254 SMO (high-alloy stainless steel) 合金SMO 254 Usually in 0.6 mm to allow stock-keeping 通常库存都是0.6mm厚度 Titanium 钛板 Always 0.5 and 0.6 mm 通常是0.5或0.6mm Some with thicker plates (high-pressure applications) 高压工况时厚度较厚 Some PHEs with 0.4 mm (low-pressure applications) 有些低压工况时板片厚度0.4mm Alloy C-276 (Nickel alloy) 合金C-276（镍基合金） Usually in 0.6 mm to allow stock-keeping 通常的库存都是0.6mm厚度,Detta r ett test!,Slide 19,Plate materials板片材料,Standard materials and typical uses 标准材料及其典型应用 AISI 304 304不锈钢 Typically in clean water-water duties 干净的水水工况 Example, up to 50 ppm chlorides at 50C 50C下50ppm的氯离子浓度 AISI 316 316不锈钢 Typically in water-water duties 普通的水水工况 Example, up to 250 ppm chlorides at 50C 50C下250ppm的氯离子浓度 254 SMO (high-alloy stainless steel) 254 SMO不锈钢 Many uses including high-chloride water-water duties 多数应用在氯离子浓度较高的水水工况中 Example, up to 6000 ppm chlorides at 50C 50C下6000ppm的氯离子浓度 Titanium 钛板 Most frequent use is for sea water (3.5% chlorides) 海水中换热工况（ 3.5% 氯离子） Example, up to 130C in sea water 130C下海水工况 Alloy C-276 (Nickel alloy) 镍基合金C-276 Most frequent use is for concentrated sulphuric acid up to 90C通常应用在90C下高浓度的硫酸,Detta r ett test!,Slide 20,Plate materials 板片材料,Common exotic materials 稀有金属材料 Not always in stock 通常不做库存 Check with Supply Unit before quoting and confirm before order 报价和订单前务必和工厂联系确认,904L is an alternative to 254 SMO in some applications 某些工况下904L可以替代254SMO Nickel 200/201 is mainly for sodium hydroxide production 氢氧化钠工业生产中经常用到镍合金200/201 Titanium Palladium 钛钯合金 For sea water at high temperature (130C) 海水中温度大于130C For high concentrated chloride brines at high temperature 高温高浓的氯离子溶液 Alloy G-30 is used in the sulphuric acid application (scrubber)G-30应用在硫酸工业中 Alloy D-205 is exclusively for concentrated sulphuric acid 90C D205高浓硫酸中温度高于90C Many more are used less frequently on a case-by-case basis 具体问题具体对待,Detta r ett test!,Slide 21,Plate material 板片材料,How to know which plate material to use? 如何知晓材料的选择 Application Manual 应用手册 Contact the Market Segment 和市场部联系 Testing with small test-pieces in the customers process 对客户样品进行测试,Detta r ett test!,Slide 22,Gasket - advanced sealing system 胶垫:先进的防泄漏功能,Long lasting gaskets! 更长使用寿命的胶垫!,.or glue-free gasket that do not mix sealing and fastening function双组分环氧胶或免粘胶卡扣式胶垫,Detta r ett test!,Slide 23,Gasket - profile and groove 胶垫: 形状和凹槽,Profile,Competitor 其他厂家,Alfa Laval,Groove,Higher sealing pressure 屋顶性结构 产生更大的密 封压力,Risk of leakage.泄漏的风险,Full support to gasket 凹槽 全面保护胶垫 防止被高压吹出,Openings. Risk of gasket blow-out.被高压吹出的风险,The difference is life time and reliability 两者的不同就是使用的寿命和可靠性,Detta r ett test!,Slide 24,Gasket - glue free fastening胶垫:免粘胶卡扣式胶垫,Fastening and sealing are kept separate 密封和固定功能分开 If the one of the fastener breaks, the gasket still stays sealed固定功能失效并不影响胶垫的密封功能,Clip-on卡扣,Snap-on 嵌入,Sealing 密封,Fastening 固定,Detta r ett test!,Slide 25,Gasket - glued fastening胶垫胶粘式紧固,Alfa Laval uses 2-component oven cured epoxy glue Alfa Laval 使用双组分烤化的环氧胶 Average gasket lifetime in years for the same application, opened once a year 相同工况下一年打开一次，胶垫的平均寿命,Rubber glue 普通的胶粘,Years 年,Rubber glue oven cured 带胶粘的烤化胶,2-component epoxy glue, oven cured 双组分环氧烤化胶,5,10,Alfa Laval,Detta r ett test!,Slide 26,Gasket - glued versus glue-free 胶垫胶粘和非胶粘,Should be the choice of the customer 以客户为导向 .BUT glued is preferred: 但是在以下几种情况下建议胶粘 On large plates 大型号 When units are opened frequently 经常拆洗 On high pressure duties 高压负荷 When the gasket will be swelling due to chemical attack 物料对胶垫略有溶涨,Detta r ett test!,Slide 27,Gasket materials 胶垫材料,The choice of rubber material depends on 胶垫材料的选择需要考虑以下几个方面 Fluids - chemical attack or not 流体是否和胶垫间有化学腐蚀 The combination of temperature and pressure 操作温度和压力,Rubber materials change properties due to 胶垫发生性质改变 Time - the rubber relaxes 时间胶垫的 Temperature - the rubber deteriorates 温度胶垫的老化 Hardening by attack of oxidising agents (e.g., oxygen in air) 氧化剂致使的胶垫脆化 Swelling or softening by absorption of chemicals in the fluids 溶涨和软化 Common gasket types 常见的几种型号 Nitrile 丁腈橡胶 EPDM 三元乙丙橡胶 FKM 氟橡胶,Detta r ett test!,Slide 28,Frame - M15 and larger 框架 - M15 或更大,Carrying bar in aluminium or painted carbon steel 上导杆材质为铝或碳钢 Support column in aluminium or painted carbon steel 支架为铝或者碳钢 Guiding bar in stainless steel 下导杆为不锈钢材质,Detta r ett test!,Slide 29,Frame - M15 and larger 框架 - M15 或更大,Roller on pressure plate to allow easy opening and closing带动压紧板的移动，更加容易地打开和关闭板式换热器,Detta r ett test!,Slide 30,Frame - painting systems框架: 喷涂工艺,Standard 标准 Sandblasting 喷砂 Primer - 2 part epoxy 底漆 Finish - 2 part epoxy 面漆 90-135 microns 90-135 mm,Special 特殊 Sandblasting 喷砂 Primer - zinc rich epoxy 含锌底漆 2 coatings - iron oxide epoxy 两层氧化铁环氧漆 Finish - 2 part polyurethane聚亚安酯面漆 240-315 microns 240-315mm,Choice of colours 选择油漆 Choice of tested paint systems 测试, 定出工艺的厚度 Examples,Specifically developed for PHE 对板式换热器尤其重要 Too thick Paint is crushed behind end-plates 太厚 油漆会被板片挤坏 = 导致框架腐蚀! Too thin Inadequate protection 太薄 得不到保护 = 同样导致腐蚀! Alfa Laval system balances hardness & thickness Alfa Laval 很好地平衡二者的关系,Detta r ett test!,Slide 31,Unique 5-point alignment system 全球独一无二的五点定位系统 Provides exact positioning of the plates horizontally and vertically 为板片的拆装提供水平和垂直精准 的定位 Ensures good sealing throughout the plate pack 确保整套板片良好的密封,Carrying bar上导杆,Guiding bar 下导杆,Plate,Frame - M15 and larger框架: 定位系统,Detta r ett test!,Slide 32,Frame - M15 and larger 框架-M15及以上型号,Tightening bolts to allow easy opening轻松地拆装 Bolt head 螺栓头 Bearing box轴承 Plastic cover塑胶保护套 Lock washer止推垫片 Nut螺母 Rolled thread 螺纹,Detta r ett test!,Slide 33,Bolt head fixated固定的螺栓头 Does not loosen when opening开启时不会松脱,Lock washer止推垫片 Prevents bolt to fall out during tightening and opening防止收紧时掉下,Frame - M15 and larger框架-M15及以上型号,Tilted bolt opening螺栓侧取式 Prevents bolts to fall out when loose防止拆装时掉下,Tightening bolts to allow easy opening更容易地收紧和拆开,Detta r ett test!,Slide 34,Frame - M15 and larger 框架M15及以上型号,One man can open and close a large PHE using standard tools使用标准的工具,一个人可以轻松拆装一台板式换热器 Serviceability维护方便 Less downtime缩短停机时间 Safety更加安全 Longer lifetime更长的使用寿命,Detta r ett test!,Slide 35,Smaller units requires less features