液環真空泵

中等氣量，Vectra XL

氣量30至5,200 ACFM（50至8,900 m3/h）

NASH Vectra液環真空泵和壓縮機系列以空前的生產效率提供更佳性能。Vectra XL旨在承受化學以及石油和天然氣行業的惡劣環境，有12種型號，氣量為30至5,200 ACFM（50至8,900m3/hr）。

描述

專為要求苛刻的環境而設計

Vectra XL泵和壓縮機旨在經受化學以及石油和天然氣行業的惡劣環境。

?設計精良，適用于需要在正背壓下排放的應用

?提供球墨鑄鐵和不銹鋼

?可配用各種機械密封

Vectra XL系列符合高可燃范圍標準并通過ATEX認證。這些真空泵和壓縮機符合指南94/9 / EG，類別1和2，并且在設計時考慮到API 681規范。

易于維護 – 使用成本低

Vectra XL泵易于維護，且經過改進，從而優化了性能并且提高了靠性。

?外部機械密封靈活且便于維護

?泵體設計可減少作用在泵軸上的力

?凸輪清洗可減少侵蝕磨損

作為真空泵和壓縮機運行時，其排放壓力范圍為43.5 psia（3 bar abs.)

某些應用需要在某道工序中抽真空和壓縮。我們的液環真空泵和壓縮機可以在一臺泵中處理氣體，而不需要在兩臺獨立的機器中完成 - 降低了成本并簡化了安裝。

可行、快效、性能優佳

基于成熟可行的NASH錐形液環泵設計，Vectra系列通過多次工程升級提供優佳的性能和可行性。

?改進錐角，從而減小了泵的尺寸

?獲得自主研發設計的GSV技術可顯著提高泵在高度真空下的性能

錐形端口和轉子配置

Nash的可變錐形端口設計于1932年獲得自主研發設計，使壓縮力抵消轉子和軸的重量，從而盡量減少軸承的運行負荷。可變端口在整個工作范圍內優化泵的性能。憑借不斷創新，Nash的自主研發設計設計具有以下特點：

?可選擇的凸輪清洗方法，以盡量減小涉及固體的工作中侵蝕造成的損害

?大壓差能力

?GSV設計可更大限度地減少氣體從排放口漏到入口，從而提高容量，特別是在深度真空時

?液體殘留物耐受性高

?側面排放，以盡量減少滿液啟動的可能

?自吸設計可消除在再循環系統中使用增壓泵

技術數據

?吸入流量：30至5,200 ACFM（50至8,900 m3/h）

?真空范圍：至1 inHgA（至33 mbar abs.）

?排氣壓強范圍：43.5 psia (3 bar abs.)

?壓差： 至29 psi（至2 abs.）

?軸密封：填料函（標準）、機械密封（單端/雙端）或按要求的管殼

?結構材料：球墨鑄鐵，不銹鋼

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