液环真空泵
液环真空泵
中等气量，Vectra XL
气量30至5,200 ACFM（50至8,900 m3/h）
NASH Vectra液环真空泵和压缩机系列以空前的生产效率提供更佳性能。Vectra XL旨在承受化学以及石油和天然气行业的恶劣环境，有12种型号，气量为30至5,200 ACFM（50至8,900m3/hr）。
描述
专为要求苛刻的环境而设计
Vectra XL泵和压缩机旨在经受化学以及石油和天然气行业的恶劣环境。
设计精良，适用于需要在正背压下排放的应用
提供球墨铸铁和不锈钢
可配用各种机械密封
Vectra XL系列符合高可燃范围标准并通过ATEX认证。这些真空泵和压缩机符合指南94/9 / EG，类别1和2，并且在设计时考虑到API 681规范。
易于维护 – 使用成本低
Vectra XL泵易于维护，且经过改进，从而优化了性能并且提高了靠性。
外部机械密封灵活且便于维护
泵体设计可减少作用在泵轴上的力
凸轮清洗可减少侵蚀磨损
作为真空泵和压缩机运行时，其排放压力范围为43.5 psia（3 bar abs.)
某些应用需要在某道工序中抽真空和压缩。我们的液环真空泵和压缩机可以在一台泵中处理气体，而不需要在两台独立的机器中完成 - 降低了成本并简化了安装。
可行、快效、性能优佳
基于成熟可行的NASH锥形液环泵设计，Vectra系列通过多次工程升级提供优佳的性能和可行性。
改进锥角，从而减小了泵的尺寸
获得自主研发设计的GSV技术可显著提高泵在高度真空下的性能
锥形端口和转子配置
Nash的可变锥形端口设计于1932年获得自主研发设计，使压缩力抵消转子和轴的重量，从而尽量减少轴承的运行负荷。可变端口在整个工作范围内优化泵的性能。凭借不断创新，Nash的自主研发设计设计具有以下特点：
可选择的凸轮清洗方法，以尽量减小涉及固体的工作中侵蚀造成的损害
大压差能力
GSV设计可更大限度地减少气体从排放口漏到入口，从而提高容量，特别是在深度真空时
液体残留物耐受性高
侧面排放，以尽量减少满液启动的可能
自吸设计可消除在再循环系统中使用增压泵
技术数据
吸入流量：30至5,200 ACFM（50至8,900 m3/h）
真空范围：至1 inHgA（至33 mbar abs.）
排气压强范围：43.5 psia (3 bar abs.)
压差： 至29 psi（至2 abs.）
轴密封：填料函（标准）、机械密封（单端/双端）或按要求的管壳
结构材料：球墨铸铁，不锈钢
Liquid Ring Vacuum Pump
Medium Capacity, Vectra XL
Capacity 115 to 5,200 ACFM (195 to 8,900 m3/h)
NASH Vectra XL vacuum pumps are designed for rigorous, nonstop demands of harsh industrial environments including: chemical, oil & gas, food and beverage and other demanding applications such as: poultry processing, paper converting, house vacuum and vapor recovery. The Vectra XL vacuum series is manufactured to deliver optimum, reliable performance and exclusive production efficiencies specific to customer application requirements.
Description
Engineered for Demanding Environments
Vectra XL liquid ring vacuum pumps and compressors are designed for harsh, critical environments. These systems have been specifically designed to excel in applications that require discharging against a positive back pressure. Vectra XL pumps are most commonly utilized in industrial environments like chemical, oil & gas, food and beverage and other demanding applications such as poultry processing, paper converting, house vacuum and vapor recovery.
Additional Applications Include:
• Poultry processing such as evisceration, vacuum conveying, vacuum pan margination, fryers and cookers
• Bottling
• Cookers, distillers and evaporators
• Chemical processes like reactors, evaporators, deaerators, distillation and filtration for low spec applications
• House vacuum
• Paper converting
• Pulp molding
• Vapor recovery
• Wood treatment
NASH Vectra XL vacuum pumps are manufactured above industry standards and known for their reliability. Furthermore, advanced designed technologies are employed to achieve optimum performance and production efficiencies. Vectra XL vacuum pumps are economical and provide great value to customers.
Easy to Maintain – Low Total Cost of Ownership
The Vectra XL liquid ring vacuum pump is easy to maintain with pre-engineered, trouble-free operation, and optimizes solutions. These systems support plant growth and are pre-packaged. Additional features contributing to a low cost of ownership are:
• Compact design - less floor space required
• External mechanical seals - flexibility & ease of maintenance
• Universal stuffing box - accepts variety of mechanical seals
• Global product design - direct drive speeds for 60 Hz & 50 Hz motors
• Extended pressure ratings - ability to handle tough applications where back pressure is required
• Conical porting design - better ability to handle water/particulate slugs
• Variable port design - high efficiency
• Redesigned cone angle - reduced pump length
• One moving part - long term reliability
• Lobe purges - reduce erosion wear
• NASH patented gas scavenging - increase performance at high vacuum levels
• Optimum design using finite element analysis - improved efficiency, performance and value
• * performance tested - trouble-free start-up and operation
Technological Advancements
The NASH Vectra XL liquid ring vacuum pumps are industrially advanced with patented cone design, rotor configuration, and gas scavenging.
Improved cone angles reduce pump length. This feature contributes to the compact design requiring less floor space. Whereas rotor configuration is Nash’s conical porting design. This design allows the force of compression to counter the weight of the rotor and shaft to help minimize the load on bearings during operation. Moreover, Nash gas scavenging improves pump performance at high vacuum levels. Gas scavenging minimizes the slip of gas from discharge to the inlet. This improves capacity at deep level vacuum.
Certifications
NASH Vectra XL vacuum pumps meet high combustible range standards and are ATEX approved. These vacuum pump systems are in accordance with 94/9/EG, category 1, and 2. Specifications API 681 is also available.
Equipment is tested prior to reaching the customer or end-user. This ensures top quality and avoids unforeseeable issues or operational downtime. Therefore, upholding Nash’s strong reputation as the global leader of engineered vacuum solutions and producing premier quality products efficiently and economically.
Nash is the global leader of engineered vacuum solutions and produces premier quality products efficiently and economically. Backed by over 110 years’ experience, NASH CERTIFIEDTM experts provide aftermarket support with maintenance, service, parts, and repair. Service centers are globally located to protect your vacuum system investment and provide quality, reliable and efficient solutions.
Technical Data
Vectra XL Capacity Chart
Suction Capacity: 115 to 5,200 ACFM (195 to 8,900 m3/h)
Vacuum Range: to 1 inHgA (to 33 mbar abs.)
Discharge Pressure Range: 29 psig (3 bar abs.)
Differential Pressure: to 29 psi (to 2 abs.)
Shaft Seals: Stuffing Box (standard), Mechanical Seals (single acting/ double acting) or Cartridge on request
Materials of Construction: Ductile Iron, Stainless Steel