VTP series vertical turbine long shaft pump

1 Overview

VTP series vertical turbine long shaft pump (Vertical-Turbine-Pump) is a single suction, multi-stage vertical guide vane water pump, adopts mixed flow and centrifugal impellers, and is equipped with high-performance self-lubricating water guide bearings, with a long service life. It can be used with an angle gearbox and can be driven by a diesel engine. The submerged length can be customized according to user requirements. This series of vertical turbine long shaft pumps is an advanced and mature long shaft pump series product developed by absorbing the advanced design and manufacturing experience of vertical long shaft pumps at home and abroad and combining with the domestic market demand. It has the characteristics of high efficiency, reliable operation, fast start-up, compact structure, and small footprint. It is suitable for the transportation of clean water, rainwater, seawater and other media in the power, metallurgy, fire protection, mining, steel, municipal and other industries. It is widely used in flood control and drainage, dock water treatment, cooling services, seawater and raw water, industrial process pumps, public design circulating water, condenser circulating water pumps, dust washing, fire protection, deep well water extraction, municipal tap water.

Technical Parameters

Maximum flow rate: 25,000 m3/h (110,000 gpm)

Maximum lift: 456m (1500ft)

Power range: 1.5~3400kW

Temperature range: -32~200℃

Pressure range: ~2.5 MPa

Implementation Standards

GB/T5657 Technical conditions for centrifugal pumps··· ···Class III;

GB/T13008 Technical requirements for mixed flow pumps and axial flow pumps.

Application

Model meaning:

100VTP126-14A× 5

100 — Pump outlet diameter is 100 mm

VTP - Vertical Turbine Pump

126 — Design point flow rate 126m ³ /h

14 — The design point head of a single-stage impeller (without cutting) is 14m

A — indicates the impeller outer diameter cutting code ( A , B , C ... )

5 — The impeller has 5 stages

2 Conditions of use

1. When the water pump is running, a certain immersion depth must be maintained. For the minimum immersion depth value, refer to the pump installation dimension drawing.

2. The water cannot contain any oily substances.

3. The water must not contain excessive corrosive minerals.

4. The sand content in the water shall not exceed 0.01 % (by weight).

5. The pH value of water should be between 6.5 and 8.5 . If it exceeds this range, special customization is required.

6. The well should be upright.

3. Structure Description

The structure diagram of the VTP series pump is shown in Figure 1 .

<1>Drive type

VTC series pumps have four drive modes: ⅰ) directly driven by ordinary vertical motor; ⅱ) directly driven by vertical hollow shaft motor; ⅲ) equipped with diesel engine or steam turbine through right angle gearbox speed change drive; ⅳ) equipped with horizontal motor through right angle gearbox speed change drive.

<2>Structure

The pump equipment is mainly composed of three parts: pump body, water lifting pipe and pump seat. The first two parts are located underground, and the pump seat is located above the well.

Figure 1. VTP series pump structure diagram

1. Inlet

2. Impeller nut

3. Impeller

4. Sealing ring

5. Guide shell

6. Bushing

7. Guide bearing

8. Lower shaft

9. Downspout pipe

10. Intermediate coupling

11. Upper shaft

12. Upward water pipe

13. Outlet elbow

14. Pressure relief sleeve

15. Upper guide bearing

16. Stuffing box

17. Packing gland

ⅰ) Pump body parts

The pump body components mainly include: filter screen, impeller, sealing ring, cone sleeve, suction bell mouth, guide vane body, guide bearing, impeller shaft and other parts.

The suction bell mouth and the guide vane body are connected by flanges, and the impeller is fixed by a cone sleeve.

ⅱ) Water pipe parts

The water pumping pipe components are composed of water pumping pipe, transmission shaft, guide bearing body, guide bearing and coupling and other parts.

The water pipes are connected by flanges; there are two types of couplings: threaded couplings and sleeve couplings, and threaded couplings are generally used.

ⅲ) Pump seat parts

The pump seat components mainly include the water outlet elbow and the packing device. When driven by an ordinary vertical motor, it is also equipped with a motor support, thrust bearing components, anti-reverse mechanism, pump, motor coupling and other components.

The entire pump base assembly is fixed to the foundation with multiple anchor bolts.

4 Installation

Before installation, always inspect the pump equipment.

l Count the parts and check whether any are missing or damaged.

l Check all assembled fasteners for proper tightness.

l Turn the pump shaft, it should rotate smoothly.

Installation steps:

<1>Install the filter.

<2> Use a coupling to connect the lower transmission shaft and the impeller shaft.

<3>Connect the lower water pipe and the uppermost guide shell with bolts.

<4>Lift the connected parts and slowly lower them into the well, then use the flange to support and fix them on the square wood of the well platform.

<5>Install the guide bearing components and the previous section of the transmission shaft and water pipe.

<6>Repeat steps 4 and 5 until all the drive shafts and water pipes are installed.

<7>Take out the filler in the filler cavity of the water outlet elbow, lift the water outlet elbow, pass the upper shaft through the filler cavity hole, connect the rising water pipe and the water outlet elbow, and then slowly lower it until the water outlet elbow falls on the foundation.

<8>Install the packing and tighten the packing gland.

<9>Depending on the driving mode, the following steps are divided into three situations:

ⅰ) Ordinary vertical motor drive

First install the motor support on the upper part of the outlet elbow, then fix the thrust bearing body to the motor support with bolts, put the thrust bearing in the thrust bearing body, install the key on the upper shaft, insert the bearing bushing, then install the anti-reverse ratchet, and finally install the pump coupling and tighten it with a small round nut (adjusting nut).

Figure 2. Assembly diagram of ordinary vertical motor driven pump seat components

ⅱ) Hollow shaft motor drive

Remove the waterproof cover on the upper end of the motor, lift the motor, pass the upper shaft through the hollow rotor of the motor, install the motor on the water outlet elbow, and install the adjusting nut.

ⅲ) Driven by right angle gearbox

The installation method is similar to that of the hollow shaft motor drive.

Vertical turbine long shaft pumps (VTP) are divided into the following four products according to the impeller type and drive mode:

1. LC type single-stage or multi-stage centrifugal pumps or mixed flow pumps (corresponding to API 610 VS1 pumps) for high head, among which the vertical multi-stage guide vane centrifugal pump can be expanded to a vertical barrel pump (corresponding to API 610 VS6 pump).

2. HLB(K) single-stage mixed flow pump (diagonal flow pump) for larger flow and medium head.

3. ZLB single-stage axial flow pump for large flow and low head (corresponding to API 610 VS3 pump).

4.Vertical long shaft pump driven by right angle gearbox for fire fighting and offshore platforms or places with insufficient power supply .

LC series vertical turbine long shaft pump

Performance range

Maximum flow rate: 8800 cubic meters per hour (39600 gallons per minute)

Maximum head: 450 meters (1500 feet)

Maximum temperature: 200°C (388°F)

Structural features

◆ The outlet elbows above 10” are welded parts. Suitable for high temperature liquid pump transportation.

◆ The external pipe and the guide vane body are both connected by flanges and positioned by stoppers, which makes assembly and disassembly easy during maintenance.

◆ The external pipe with stopper positioning has low cost, easy maintenance and few faults.

◆ The transmission shafts are connected with key couplings for easy maintenance.

◆ When pumping media containing particles, a closed transmission shaft design with a protective tube can be used, and external flushing water can be used to flush the guide bearing, which is suitable for pumping corrosive and abrasive media.

◆ There are various bearing materials to choose from, such as rubber, ceramide, carbon fiber, ceramic, etc.

◆ The surface of the replaceable sleeve is hardened to extend its service life.

◆ The impeller and guide vane body are equipped with double sealing rings.

◆ Surface hardening treatment to extend service life. When pumping solid-containing media, the sealing ring can be flushed with external water.

◆ The product structure design is flexible and can be customized according to user requirements.

Sectional Drawing

HLB(K) series vertical long-axis single-stage mixed flow pump (diagonal flow pump)

Performance range

Maximum flow rate: 25,000 cubic meters per hour (110,000 gallons per minute)

Maximum lift: 70 meters (210 feet)

Sectional Drawing

ZLB series vertical long shaft single stage axial flow pump

Performance range

Maximum flow rate: 20,000 cubic meters per hour (90,000 gallons per minute)

Maximum lift: 12 m (36 ft)

ZLB series vertical axial flow pump section diagram

VTP series vertical turbine long shaft pump materials: stainless steel 304,316,316L, cast steel ZG235-450, cast iron QT400-18 or HT250, duplex steel 2205 or 2507.

The VTP series vertical turbine long-axis pump has a small footprint and is safer and more reliable than a submersible pump. It does not require water to be filled and can be started at any time.
It has a unique sand discharge structure and can adapt to sandy water. It uses a variety of different materials and can adapt to a variety of different media, including acid and seawater.

Denor Fluid Equipment (Wuhan) Co., Ltd. is a reputable manufacturer and supplier of fluid equipment for water systems. The company has incorporated advanced fluid production technology and processes from Germany. Since its establishment, Denor has upheld its core values of morality, integrity, and mutually beneficial development. The company places great emphasis on branding and integrity, and has made significant contributions to the water supply and drainage industry.

Denor has obtained various certifications, including ISO9001 for quality management, OHSAS18001 for occupational health and safety management, and ISO14001 for environmental management. The company offers a wide range of products, such as prefabricated pumping stations, integrated water treatment pump stations, sewage lifting equipment, oil and water separators, smash type grilles, and no negative pressure complete sets of water supply equipment.

With over 50 patents, Denor was recognized as a national high-tech enterprise in 2018. Denor takes great care in every aspect of product production to ensure the optimal performance of its equipment. The company is committed to providing high-quality products and excellent after-sales service to meet customer needs and provide comprehensive solutions for water systems. Denor is dedicated to producing responsible products and being a socially responsible enterprise.