





Pompa Grundfos dan Flyght ini merupakan pompa yang sangat umum didalam suatu industri, biasanya sekitar 80% pompa yang digunakan dalam suatu industri ialah pompa sentrifugal Grundfos .Pompa Sentrifugal adalah pompa dengan prinsip kerja merubah energi kinetis (kecepatan) cairan menjadi energi potensial (tekanan) melalui suatu impeler yang berputar dalam suatu casing. Pompa Grundfos dan Ebara ini terdiri dari komponen utama berupa kipas (impeler) yang dapat berputar dalam sebuah casing (rumah pompa), casing tersebut dihubungkan dengan saluran isap dan saluran tekan. Untuk menjaga agar didalam casing selalu terisi cairan, maka ada saluran isap yang harus dilengkapi dengan katup kaki (foot valve). Impeler yang berputar akan memberikan gaya sentrifugal sehingga cairan yang ada pada bagian pusat impeler akan terlempar keluar dari impeler yang kemudian ditahan casing sehingga menimbulkan tekanan alir.
Jika ada yang kurang jelas silahkan menghubungi kami.
Untuk pemesanan dapat dilakukan melalui :
E-mail : info@heksamandiri.co.id
Phone:(6221) 295 296 30 & 295 296 31
Mobile: 0811136586
Centrifugal pump atau pompa centrifugal adalah jenis pompa yang paling banyak digunakan, ia memiliki kelebihan diataranya karena pengoprasiannya yang mudah, maintenance yang tidak terlalu mahal, tidak berisik dan lain sebagainya.
Sebelum ke cara kerja centrifugal pump, ada baiknya kita memahami prinsip kerja dari pompa terlebih dahulu. Pompa adalah alat untuk mengalirkan fluida cair. Bedanya dengan compressor, compressor biasanya digunakan untuk mengalirkan fluida yang compressible, fluida yang dapat di mampatkan seperti udara.
Prinsip kerja pompa adalah ia menciptakan tekanan vakum pada inletnya, yang akhirnya menyerap fluida ke dalam pompa, kemudian mendorongnya melalui lubang keluar yang disebut outlet atau discharge. Ada dua jenis pompa sebenarnya, yaitu positif displacement pump dan satu lagi jenis kinetic, centrifugal pump ini masuk dalam jenis pompa yang kinetic.
Prinsip Kerja Centrifugal Pump.
Pada pompa centrifugal, ia memanfaatkan gaya centrifugal. Seperti apa gaya centrifugal? Coba kita buat sedikit experiment untuk memahami gaya centrifugal. Misalnya kamu punya sebuah wadah, ember yang berisi air misalnya. Kamu putar terus menerus, ketika putaran itu semakin kencang, di tanganmu akan terasa tertarik oleh gaya dari air yang kamu putar. Semakin kencang putarannya, semakin besar gayanya. Gaya pada lenganmu itulah gaya centrifugal.
Kalau di definisikan, gaya centrifugal adalah gaya gerak melingkar yang berputar menjauhi pusat lingkaran, dimana nilainya adalah positif. ketika impeller (baling baling) berputar maka air akan terdorong di impeller lewat gaya centrifugal dan akhirnya keluar di saluran discharge, sedangkan pada suctionnya menjadi negative pressure nya yang menyebabkan air jadi terisap pada suction nya.
Jenis Impeller Pada Centrifugal Pump.
Berbicara mengenai impeller pada centrifugal pump, ia dibagi menjadi 3 bagian, yaitu :
open impeller, dimana baling baling itu bebas, ia tidak ada penahan di sisi depan atau belakangnya, biasanya ini dipakai pada axial flow.
Semi open impeller adalah kondisi dimana baling baling itu bebas di satu sisi, tapi disisi yang lainya ditutup.
Dan yang terakhir adalah enclosed impeller, yaitu baling baling berada di Antara dua disk (penutup), dan biasanya di cor menjadi satu bagian.
Demikian artikel ini kami buat.
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Email : info@kamjaya.com
Phone : 021-73887603/ 021-71654133/ 085105654133
Web : www.kamjaya.com
The basic pumps CR pumps range, which can be applied in almost any industrial solution, is already in itself the broadest range available. Through our modular approach, we have made it even broader.
The basic CR pumps range is available in four different materials: cast iron, two grades of stainless steel, and all-titanium. There are eleven flow sizes pumps, capable of producing up to almost 50 bar of pressure, and with a variety of shaft seals, rubber materials and supply voltages.
Pumps parts which are typically vulnerable to difficult liquids or particularly demanding operating conditions can be optimised for their purpose and designed for specific requirements.
CR pumps provide a complete range of pumps solutions so that all applications, industrial and domestic, can benefit from the Grundfos pumps touch. The applications that can be covered include the following:
End Suction Volute Pump.
Features:
Application:
Grundfos end-suction pumps are used in water supply, industrial pressure boosting, industrial liquid transfer, HVAC (heating, ventilation and air-conditioning), and irrigation.
Grundfos end-suction pumps are multi-purpose pumps suitable for a variety of different applications requiring reliable and cost-efficient supply. End-suction pumps are used in five main areas of application: water supply, industrial pressure boosting, industrial liquid transfer, HVAC and irrigation by Grundfos end-suction pumps
The Grundfos NB/NBG pumps are all non-self-priming, single-stage, centrifugal volute pumps with axial suction port, radial discharge port and horizontal shaft. The NB/NBG range consists of close-coupled pumps with their main dimensions in accordance with either EN733 or ISO2858.
Grundfos offers a virtually limitless range of close coupled (NB) end-suction pumps. Their sturdiness and reliability make them ideal for use in demanding environments such as the following:
NBF is an end-suction pump made for fire sprinkler pump applications. NBF is a close-coupled type and NKF is a long-coupled type.
The NKF fire system is an NBF or NKF end-suction pump integrated with a coupling and a driver, which may be an electric motor or a diesel engine, assembled on a base frame.
Electric pump types can be ordered as a COMPACT model (inclusive of a controller integrated onto the baseframe).
Diesel-driven NKF. A controller always forms a part of the system.
Materials Pump
The pump materials are in compliance with EN 12845 and prEN12259-12:
Controller Pump
Grundfos offers a complete, factory-assembled controller in a steel plate cabinet, suitable for wall mounting or to install free-standing. The controller pump complies with the EN 12845 standard. The controller for diesel-powered pump is always mounted on the base frame.
Electric motor
The electric motor is an MG or MMG motor complying with local standards for electric motors. As from 16 July 2011, the motors used in Europe will be IE2 = EFF 1 motors.
Diesel engine
The diesel engine can operate continuously at full load at site elevation with rated output in accordance with ISO 3046-1:1986. The pump reaches full operational speed within 15 seconds; the engine is capable of starting at a room temperature of 5 °C.
Each complete engine pump unit is tested on the manufacturer’s test bed for at least 1.5 hours at rated flow rate, and the result recorded on the test certificate.
The Grundfos fire pump units are typically used in fire-fighting applications for supplying water to fire-hose reels, fire hydrants or sprinkler systems.
Highly efficient water-supply unit ready for connection (non self-priming). With 2 to 6 vertically arranged Helix VE series stainless steel high-pressure centrifugal pumps in glanded version switched in parallel; every pump is equipped with an integrated air-cooled frequency converter, including Comfort Controller CCe
Application
Type key
Example: | Wilo-COR-4 Helix VE 1603/K/VR |
COR | Compact pressure boosting system with integrated speed control of each pump |
4 | Number of pumps |
Helix VE | Pump series |
16 | Rated volume flow [m3/h] of the single pump |
03 | Number of single pump stages |
K | With cartridge mechanical seal |
5.5 | Rated motor power P2 in kW [only included if more than one motor is available for types with the same hydraulic output] |
CCe | Control device; CCe = Comfort Controller for pumps with integrated frequency converter |
Special features/product advantages
Technical data
Note on fluids: Approved fluids are generally waters which do not attack the materials used, neither chemically nor mechanically, and do not contain any abrasive or long-fibre constituents. System in accordance with DIN 1988 (EN 806)
Equipment/function
Description/design
Materials
For the series with Helix VE 4 to VE 16:
Scope of delivery
Planning guide
Inlet pressure
The maximum inlet pressure (see Technical data) must be taken into account when configuring the system. The maximum permissible inlet pressure is calculated from the maximum operating pressure of the system minus the maximum pump delivery head at Q = 0
Pressure reducer
Fluctuating inlet pressure is compensated by the speed control integrated into each single pump as long as the pressure fluctuation is not greater than the difference between the setpoint pressure value and the zero-delivery head of the single pump at minimum speed. If the pressure fluctuation is greater, a pressure reducing valve must be installed upstream of the system.
Volume flow
Up to 155 m3/h (43 l/s) system configuration in accordance with DIN 1988 (EN 806); with standby pump up to 185 mm3/h (51 l/s) during operation of the standby pump as an auxiliary peak-load unit
Residual-current-operated protection
When installing residual-current-operated protection switches in conjunction with frequency converters, bear in mind that only universal-current-sensitive residual-current-operated protection switches in accordance with DIN/VDE 0664 are to be fitted.
Wilo-WMS low-water cut-out switchgear
The series Helix VE pump being used is already equipped with an integrated dry-running detection as safety equipment for the pump. Nevertheless, the installation of a low-water cut-out switchgear is required in cases where the pressure boosting systems are connected directly to a public mains power supply; that prevents the inlet pressure in the mains supply line from falling below 1.0 bar. Please order directly when ordering the pressure boosting system. The WMS will then be installed in the pressure boosting system, electrically wired and fully tested by Wilo during the final functional test.
Standards/directives
The overall system conforms with the requirements of
* The specifications in DIN 1988 (EN 806) and of the water-supply companies are to be observed. Regarding the electrical components, the system conforms with the requirements of
Always observe the specifications in DIN 1988 (EN 806) when using and operating the pressure boosting system.(**) That does not apply to fire extinguishing systems in accordance with DIN 14462. Please request these separately.
The Grundfos Pumps horizontal multistage pump CM (=Centrifugal Modular) has been created with compactness and modularity as two of its central features, making numerous configurations possible. The pump is basically composed of a series of interchangeable modules, all of which have been designed to work together seamlessly, no matter what the application.
The pumps are of the close-coupled type.
The difference between the CM and the CME pump ranges is the motor. CM pumps are fitted with mains-operated motors, whereas the motors for CME pumps have an integrated frequency converter.
Both CM and CME Grundfos Pumps have mechanical shaft seals.
The CM and CME Grundfos Pumps are available in cast iron or stainless steel (AISI 304/DIN 1.4301 stainless steel, which is for water and non-corrosive liquids, and AISI 316/DIN 1.4401 stainless steel, which offers a high degree of corrosion protection against aggressive liquids).
The CM or CME Grundfos Pumps is a multi purpose pump for both industry and water boosting in general.
It is compact, noiseless, reliable and flexible, and this make it an optimal solution for installation and interaction with other components in small and large systems or as a stand-alone pump.
Features and benefit Of Grundfos Pumps
Design Of Wilo Pumps
Single-stage low-pressure centrifugal Wilo Pumps with axial suction point, according to EN 733 and ISO 5199, mounted on a baseplate.
Application Wilo Pumps
Type key of Wilo Pumps
Example | NL 40/200B-11/2 |
NL | Standard pump with axial suction |
40 | DN for the pressure flange |
200B | Nominal diameter of impeller |
11 | Rated motor power P2 [kW] |
2 | number of poles |
Special features/product advantages of Wilo Pumps
Technical data of Wilo Pumps
Scope of delivery
Materials of Wilo Pumps
Description/design of Wilo Pumps
Commissioning
Accessories Wilo Pumps
Automatic speed control:
for automatic, infinitely variable pump power control. for additional information, see “Switchgears and control devices” section.
Note
Motors with efficiency class IE3, other voltages and frequencies on request
General notes – ErP (ecological design-) directive