Ec67760 how to adjust vertical turbine pumps for maximum. Minimum recommended line shaft size for short coupled pumps. Deepwell vertical turbine deepwell vertical turbine courtesy of the hydraulic institute, parsippany nj, the use of vertical turbine pumps for well water is common. The standard pump is an oil lubricated design consisting of a bowl assembly, discharge elbow and column, line shafting, shaft enclosing tubes, lineshaft bearings, tension nut assembly, oil reservoir with solenoid valve and fittings, and headshaft assembly for vertical hollow shaft driver. The water supply for the fire pump shall be from a water well of style, dimension and. Angular misalignment between the driven and driver machine shafts is displayed on the results screen for both the vertical and horizontal planes. Specific gravity is a relative term which expresses. Vertical pump nomenclature nidec motor corporation.
External lubrication system vertical turbine pump enclosed shaft. Spacer may be removed for mechanical seal maintenance without removing the driver. The driver and driven shaft centerlines, of your equipment, must intersect at the center of the drive shaft. It will also be noted in the bowl assembly data and limitation table that a j11hc has a 11116 diameter bowl shaft. Angular vertical misalignment occurs when the motor shaft is at an angle with the pump shaft, but both shafts still operate in the same vertical plane. Capacity to 35,000 gpm 7,950 m3hr setting to 100 ft 15. It just depends on different features, some of them are. These pumps are extremely flexible because this pump can be built by one or many stages. The electric motor shall be vertical hollow shaft or vertical solid shaft, three phase 50 or 60 hz, a nonreverse ratchet, pbase, squirrel cage induction design. Lift the assembly over the pump and connect shaft to pump shaft.
The driver, drive coupling, head shaft and mechanical seal are never shipped assembled to the pump to prevent. In a water flush system, the pump bearings and line shaft bearings are isolated from the pumped media. The mechanical design of a vertical inline pump vip is the least expensive the pump impeller is attached to the motor shaft, and is cantilevered in the pump casing. There is essentially no pump shaft only a motor shaft. The pump shaft shall be of a582 grade 416 stainless steel, turned, ground and polished. Canned pumps are also common in municipal water applications since the use of cans provides the designer with greater flexibility when designing a pump station. Proper alignment of the pump shaft with the driver can reduce vibration and significantly improve reliability. Ec74760 how to adjust vertical turbine pumps for maximum. The column section is furnished in parts not exceeding nominal length of 3. Foundations for all installations must be adequate. Selecting a vertical turbine pump information required from client 1. The turbine line shaft transmits torque from the pump driver to the pump bowl assembly. The column pipe is manufactured with flange to correspond to the desired pump length.
The driver may be a vertical solid shaft electric motor, vertical hollow shaft. It is possible to have the same durability features with a vertical mount. Startingstoping motors are selected based on run time motor with least amount of run time. The advantages of this pump will make one of the most general types of centrifugal pumps. The lineshaft is supported throughout its length by means of bearings which. Layne bowler engineering technical data brown brothers engineers. When a vertical turbine pump stops, water flowing back down the column causes the pump to back spin. Driver the propeller pump is driven by solid shaft motors or vertical hollow shaft motors. Selecting a vertical turbine pump information required from.
The vertical inline pump helps fill in the gaps of pump gpm ratings. Where are the vertical and horizontal type pumps used in. Key factors to consider before applying a vertical turbine pump. Peerless pump company vertical turbine fire pumps section. The discharge opening can be either plain end or flanged, depending upon requirements.
Aline pumps au offers the vertical turbine fire pump sets available in a range of sizes and suitable for multiple applications, including rainwater reuse. Ec67760 how to adjust vertical turbine pumps for maximum efficiency. The vertical solid shaft driver must be supplied with special shaft and base flange tolerances. It would be really nice to know what you are trying to find out so that we know how best to answer you. Shaft loss is the friction loss, measured in horsepower, between the shaft and its bearings. The turbine line shaft transmits torque from the pump driver to the pump bowl assembly and. Vertical turbine pumps find info and get quotes at pumpscout. Pumping water level is the vertical distance, in feet, between the datum and the water. Aligns the pump with the driver which eliminates the need for flexible shaft coupling devices. The discharge nozzle of each pump is 40inch asme b16.
The two main types of turbine pumps are vertical turbine pumps and submersible turbine pumps. Since the shaft in the example is 175 feet in length, then 1 3 4 times the stretch per 100 feet will give total shaft stretch. Install threaded coupling onto pump shaft screwing it on for onehalf its length 2 a. Goulds vertical turbine pumps 7 adjustable coupling type a for vertical solid shaft driver, impeller adjustment made by using adjustable plate in the coupling. There may be many small parts such as line shaft couplings or hardware that are.
The ins and outs of vertical pumps processing magazine. The vertical pump mainly covers different configurations like submersible, double case, wetpit, solid handling, sump, and slurry. How proper shaft sizes are determined mro magazine. Provides either a stuffing box or mechanical shaft seal to seal head from leakage around shaft. Adjustable coupling type a for vertical solid shaft driver. American standard specifications for deep well vertical. A split gland simplifies packing adjustment and replacement. Warson pumps, we are manufacturers of turbine type vertical. Selecting a short coupled vertical turbine pump national pump. Thrust assembly elbows are available in both the above base or below base type.
The water supply for the fire pump shall be from a water well of style, dimension and water productivity as recommended in nfpa 20. Understanding the need for offset shaft alignment vibralign. In a water flush system the pump bearings and line shaft bearings are isolated from the pumped media. Vertical turbine fire pump sets aline pumps australia. Select the length of column and shaft to suit the overall length of the pump.
Pumpdesigner has given a good overview on the use hollow shaft motors which are used on line shaft vertical pumps, however on reading your reply it seems that you have something else under consideration. Floway pumps excellent vertical turbine pumps solutions. Specific gravity is a relative term which expresses the fluids density with reference to fresh water at 62. Vertical turbine solids handling pumps installation, operation and maintenance. Seal materials shall be compatible with the liquid pumped. Angular horizontal misalignment occurs when the motor shaft is at an angle with the pump shaft, but both shafts still operate in the same horizontal plane. The pump shall be manufactured for lubrication of the lineshaft bearings by the water being pumped. The pump shaft extends through a tube in the center of the rotor and is connected to the driver by a clutch assembly at the top of the driver. Therefore, specific operating instructions are not within the scope of this manual. The line shaft is supported throughout its length by means of bearings and may. Parallel misalignment can be considered as the distance between the driver shaft centerline and the pump shaft centerline at any given point along the length and this misalignment can happen in any plane.
Discharge pressure and flow required at the outlet of the pump as both the. Although fm listed horsepower ratings are shown at specific speeds, ppc drive. Space for installing the pump present on the site 3. From the catalog rating curves select the bowl assembly which will meet the customers requirements with respect to capacity and total dynamic head. Impeller adjustment is performed on adjusting nut located on top of motor. The vertical hollow shaft motor is designed specifically for turbine pump applications. The pump assembly is normally called bowl assembly and it consists of suction case, impellers, discharge bowls, intermediate bowls, discharge cas. Following this offset relationship will yield an operating angle of degrees. For a pump with an overall length up to 30 feet 9 m. In both cases the driver must be properly designed for the appropriate axial load bearing based on the hydraulic thrust, as must all other parts of the pump.
The hsc pump is often connected to an appropriate driver by a coupling or drive shaft. Thus, this is all about the vertical pump, which is vertical. A vertical turbine pump can also experience excessive structural vibration of the discharge head and associated driver in the field, even though the driver has been shop tested with low vibration, and the rotating components were properly balanced. The most common driver for a vtp is a hollow shaft vhs electric motor or right angle gear drive. Pipe threads must be thoroughly cleaned and lubricated.
For long vertical pumps long shaft, impellers shaft system balancing may get unstable at high rpm, despite the intermediate shaft bearings. If your operating conditions ever change, always refer to the factory for. The rotor shaft is solid and projects below the driver mounting base. When mounted horizontally, this can create a larger footprint. In a vertical turbine pump, the shaft is attached to the driver usually an electric motor at the ground surface and to. Driver vertical solid shaft vss fixed or variable speed drives specified to customer needs and location data. So mentioned long pump can be more vulnerable to high rpm, but there is no corresponding horizontal pump no need of long horizontal shaft in practice. Selection of the flexible connecting drive shaft shall be based on rating of the driver and not the pump. The line shaft and pump bowl bearings used in this vertical spindle pump operate in pure water conditions at a temperature ranging between 30. Sections are connected by flanges, and each pump train weight is more than 27 tons t. How proper shaft sizes are determined have you ever wondered why various types of electric motors with the same hpkw ratings have different shaft diameters, or why some pump shafts are so much smaller than the shafts of the motors that d. Example results shown in millimeters vertical and horizontal corrections are made as. Ec74760 how to adjust vertical turbine pumps for maximum efficiency h. The fisherpump vertical turbine multi stage barrel pump is a heavy duty double casing pump enclosed in a suction barrel.
Selecting a vertical turbine pump national pump company. Horizontal vs vertical pump speeds industrial professionals. The pump driver may consist of an electric motor, vertical gear, or steam turbine that incorporates a vertical solid shaft design mounted on the pump s discharge head. Impeller adjustment made by using adjustable plate in the coupling. This type driver requires an adjustable coupling between the pump. While submersible pumps have the electric motor located underwater at the bottom of the pump, vertical turbine pumps have the motor located above ground, connected via a long vertical shaft to impellers at the bottom of the pump. For long vertical pumps long shaft, impellersshaft system balancing may get unstable at high rpm, despite the intermediate shaft bearings. Vertical turbine pumps, suitable for mounting in a pit, are usually multi stage pumps with diffusers. The pumping unit shall be designed and manufactured in accordance with the latest.
Thermal expansion in enclosed lineshaft pump columns. Since we didnt want the coupling and shaft stiffness to influence the alignment readings. Lubrication of the column shafts can be done either with the fluid it compresses or with the oil to be placed externally in the shaft casing. Because the pump is acting as the driver, there is very little danger of unscrewing shafting, but if the pump is started during back spin, it is likely to break shafting, loosen collets, or damage the motor. Clean all faces and threads and inspect for damage or burrs etc. The maximum shaft runout and shaft to driver face perpendicularity of 0.
Discharge heads discharge heads the discharge head functions to change the direction of flow from vertical to horizontal and to couple the pump to the system piping in addition to supporting and aligning the driver. Lift the assembly over the pump and connect shaft to pump shaft coupling using antiseize compound on the threads. The lower section of enclosing tube is attached to the diffuser bowl, and the upper section terminates in the surface elbowpedestal at the tension box. The lead and lag pumps are cycled on and off based on motor run times. Selecting a vertical turbine pump information required. Date of manufacture the date of manufacture is indicated on the pump data plate. Selecting a short coupled vertical turbine pump step 1 bowl selection. Directs the flow to the desired direction with above or below the floor discharge. The pump shall be specifically labeled for fire service underground fire main system. Driver efficiency is the ratio of driver output to driver input with no external thrust. Adjustable spacer coupling type as same function as type a coupling with addition of spacer.
Ec67760 how to adjust vertical turbine pumps for maximum efficiency h. The ojt portion of a recent training class involved a large vertical floway pump driven by an 800 hp ge electric motor, rotating at 1200 rpm, utilizing a rigid coupling with a piloted fit. Hollow shaft vertical pumps pump engineering engtips. We can deliver unitized systems that include the pump, driver, controls, piping and instrumentation. For appropriate applications, the time, expertise and instruments needed to achieve precision alignment tolerances of less than 0. Dec 17, 2011 proper alignment of the pump shaft with the driver can reduce vibration and significantly improve reliability. Api 610 11th edition specifies the tolerances in figure 1. The flow rate of these pumps ranges from 50 gpm30,000gpm. They are engineered to meet or exceed international standards developed by api610, ansi, asme, hydraulic institute, and others. A guide to properly align and install vertical turbine pumps. When a driver is supplied, there will also be a nameplate on the driver.
Shaft series the calculated enduse application horsepower, as adjusted by the service factor, shall not exceed the horsepower rating of the connecting shaft at the applicable speed. For a pump with an overall length up to 30 feet 9 m it may be convenient to install. Provides external support for the entire pumping unit. This could be the result of a reed natural frequency of the motor, head and foundation. Vesconite hilube bearings were manufactured and fitted. New dealer stock, factory direct pricing, in stock service, full factory.
Vertical turbine, wetpit pump product lubrication the vtp is a single casing, diffuser type, single or multiple stage vertical turbine pump designed for continuous duty in a variety of wetpit and deep well applications. Check the driver horsepower and speed indicated on the driver nameplate, and the horsepower and speed indicated on the pump nameplate located on the discharge head to be sure they agree within 2%. Its extraordinarily broad hydraulic coverage is well complemented by its versatility. Vertical turbine pump enclosed shaft works with its own external lubrication system for highly corrosive material handling.
So, it is worthwhile to take the necessary measurements on the top and on the bottom for vertical offset and also on each side for the. Jun 01, 2009 parallel misalignment can be considered as the distance between the driver shaft centerline and the pump shaft centerline at any given point along the length and this misalignment can happen in any plane. The entire length of the line shaft is encased in an enclosing tube. Pumping water level is the vertical distance, in feet, between the datum and the water level when the pump is operating. Key factors to consider before applying a vertical turbine. Vesconite pump bearings no swell, can run dry, longest. The difference in the change in length between the shaft and column resulting from the thermal expansion and other forces is a significant factor in pump design and selection. Pump genius software monitors system pressure or flow and references low high set point and run time requirements. The overall vertical pump train is more than 14 meters m long. Vertical turbine industrial pumps open line shaft ols installation, operation and.
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