baner 2000x420 v10.jpg

PPT Inženjering AD, 37-39, Bulevar Vojvode Mišića St., 11000 Belgrade

phone: +381 11 369 0 168; Fax: + 381 11 369 0 479, office@ppt-inzenjering.rs

Design   ActiveNetwork

HYDRO ELECTRIC POWER PLANT “TREBINJE” - REPUBLIC OF SRPSKA 2006

Cylinder Ø 250 / Ø 90 x 4200 mm ………………………………………… 1 pcs.
Hydraulic drive unit
(Reservoir V = 200 l, one pump unit Q = 16 l /min, p = 250 bar, N = 2.2 kW)... 1pcs.

Electro-hydraulic installations for control of slide gate at pre-turbine gate of the HE Trebinje.
Design of a new electro-hydraulic control installation has been done, which facilitates easier manipulation of the gate. New cylinder and hydraulic power unit have been delivered. Electrical installation is now compliant with the new method of control. Testing, installation and commissioning of new electro-hydraulic installation has been performed.


S2 SAINT PETERSBURG RUSSIA-2006
         

Electro-hydraulic gate lifting system, Saint Petersburg water lock S2.

Cylinder Ø 800/320x120000 mm ……………………………………………. 4 pcs
Hydraulic drive unit
(Reservoir V = 5000 l, 2 +1 pump units Qmax = 180 l /min, p = 320 bar, 90 kW) ... 2 pcs.

Designed and supplied was electro-hydraulic power system for raising and lowering the slide gate with width of 116m and weight of about 2700 tons on turnkey basis. When all resistances and expected ice thickness are counted, the design weight has been defined at 5000 tones. The computer system is based on S7-400, both for working and backup system. Communication between the computer's hardware is done through PROFIBUS-DP, both for working and backup. Within the span of 116 m, the accuracy of achieved synchronous movement is 5 to 20 mm.


S1 ST. PETERSBURG RUSSIA-2006
         

Hydraulic system for driving gate, slide and sector gates.
Cylinder Ø 320/140x3000 mm ………………………………………………4 pcs
Cylinder Ø 250/125x2700 mm ………………………………………………2 pcs

Hydraulic drive unit
(Reservoir V = 250 l, 1 +1 pump units Qmax = 60 l /min, p = 350 bar, 15 kW)..4 pcs.
(Reservoir V = 250 l, 1 +1 pump units Qmax = 25 l /min, p = 320 bar, 4 kW)…. 4pcs

Designed and delivered was complete electro hydraulic system for two sector gates and two slide gates, which represent an auxiliary hydro-mechanical equipment for main sector gates with electric motor drive (locomotive). Cylinders for sector gate are delivered together with supports and bearings (cardan joint, universal joint) for sector gates. Each cylinder has an integrated stroke sensor of Balluff type in the piston rod. For each cylinder of sector and slide gate a separate hydraulic power pack was delivered.



HYDRO ELECTRIC POWER PLANT "SAYANO - SHUSHENSKAYA" - RUSSIA 2006


Electro hydraulic installation is designed to control segment gates (2 pcs) of coastal spill dam of HPP Sayano-Shushenskaya.

Cylinder Ø 400 / Ø 160 x 7700 mm …………………………………………… 2 pcs
(Linear position indicator of the gate is built in the cylinder)
Hydraulic drive unit ............................................... .................................... 1pcs.
(Reservoir V = 800 l, one pump unit Q = 35 l /min, p = 320 bar, N = 18.5 kW)
Electric cubicle ……………………………………………………………..1 pcs

Design, manufacture, testing and delivery of equipment have been done.
Installation, testing and handover was completed in 2010

THERMO ELECTRIC POWER PLANT “KAKANJ” – BOSNIA-HERZEGOVINA 2006.


Electro-hydraulic installation for control of slide gate on blocks 5 and 6 in the pump station TE Kakanj.

Cylinder Ø 70 / Ø 32 mm x 2100 ……………………………………………7 pcs
Hydraulic drive unit
(Reservoir V = 125 l, one pump unit Q = 2.5 l /min, p = 250 bar, N = 0.75 kW) ... 1 pc.
Electric cubicle ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 1 piece

New design of electro-hydraulic control installation has been dome, which facilitates easier manipulation of the gate. New cylinder and hydraulic power unit were delivered. Electrical installation is now compliant with the new method of control. Testing, installation and commissioning of new electro-hydraulic installation was completed in 2007.

DAM “GRUŽA”, SERBIA- 2006


Repair works on:
Conical gates NO1300 - Damage repair ………………………………………..3 pcs
Slide gates – General repair of hydraulic cylinders …………………………... 4 pcs




DAM “VRUTCI "-2006



Repair works performed on:
Conical gates NO1300 - Damage Repair... ... ... ... ... ... ... ... ... ... ... .. ………..4pcs
Slide gates - Repair of hydraulic cylinders ... ... ... ... ... ... ... ... ... ... ... ............ 4 pcs
Draining pumps - Delivery of new units ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 2 pcs




HYDRO ELECTRIC POWER PLANT “DJERDAP”, SERBIA - 2006


Preparation of the conceptual project of reconstruction (replacement) of electro-hydraulic drive of entry building of the dam, BPZ, "Djerdap 1".
An entirely new electro-hydraulic system for fast pre-turbine gates has been designed based on positive experience from electro-hydraulic system that PPT- Engineering  designed between 1969 to 1974 as original design during the construction of "Djerdap 1". The latest design solutions implemented guarantee the operation of the new system for the next 40 years.



HYDRO ELECTRIC POWER PLANT DJERDAP, SERBIA - 2006


Production of hydraulic units (pumps) for oil transfer for "Djerdap 1".
Two mobile hydraulic units for transfer of oil with filtration were installed. Accompanying fittings, above all hoses, are adjusted for filling and draining of oil from large cylinders during repair works.



HYDRO ELECTRIC POWER PLANT "SANGTUDA 1"-TAJIKISTAN 2007


Electro-hydraulic installation is intended for maneuvering primary gates (four pieces) and maintenance gates (4 pieces) of construction-exploitation dam of the HPP “Sangtuda 1” in Tajikistan.

MAINTENANCE GATES (GATES)
Cylinder Ø 710 / Ø 360 x 9900 mm ………………………………………….. 4 pcs
(New cylinder with piston rod ceramic coating has been installed, with integrated measuring system. Three remaining cylinders underwent general repair)
Control blocks ………………………………………………………………… 4 pcs
Hydraulic drive unit …………………………………………………………… 1 pc
(Reservoir V = 8500 l, 2 pump units Q = 135 l /min, p = 320 bar, N = 75 kW)
Electric cubicle ……………………………………………………………… 1 pc.

BASIC GATES
Cylinder Ø 710 / Ø 360 x 9900 mm ………………………………………….. 4 pcs
(Installed are four new cylinders with ceramic coated piston rods and integrated measuring system,  cylinders were supplied by the Rexroth company)
Control blocks ………………………………………………………………… 4 pcs
Hydraulic drive unit ............................................... ........................................... 2 pcs
(Reservoir V = 8500 l, 2 pump units Q = 135 l /min, p = 320 bar, N = 75 kW)
Electric cubicle ………………………………………………………………. 1 pc

Design, manufacture, testing and delivery of equipment have been done.
Installation, testing and handover of the installation were completed in 2008.


HYDRO ELECTRIC POWER PLANT "SANGTUDA 1"-TAJIKISTAN 2007



Electro-hydraulic installation is designed to control pre-turbine slide gates on HPP “Sangtuda 1"in Tajikistan.
PRE-TURBINE GATES
Cylinder Ø 500 / Ø 240x8700 mm ……………………………………………. 4 pcs
Control blocks …………………………………………………………………..4 pcs
Hydraulic drive unit …………………………………………………………… 1 pc
(Reservoir V = L400 l, 2 pump units Q = 400 l /min, p = 320 bar, N = 110 kW, axial piston pump regulated by pressure and flow, two pump units Q = 250 l / min, p = 100bar , N = 55kW, z)
Electric cubicle…………………………………………………………………. 4 pcs

Electro-hydraulic system has been designed and delivered that provided supplement of upper chambers of cylinders during emergency lowering providing necessary force. Cylinders are designed and manufactured in the company PPT-Cilindri and all have integrated measurement system in piston rod, MTS, RF series.
Design, manufacture, testing and delivery of equipment have been done.
The installation was commissioned in December of 2008


HYDRO ELECTRIC POWER PLANT "ZARAMAGSKAYA" - RUSSIA 2007


Hydraulic drive is intended for maneuvering of slide emergency-maintenance gate and working gate of the exit opening of the tunnel at Zaramagskaya HPP.
EMERGENCY-MAINTENANCE GATE
Cylinder Ø 630 / Ø 280 x 6900 mm …………………………………………… 1 pc
(Linear indicator of the gate position has been installed in the cylinder)
Control block ................................................ ..................................................... 1 pc.
Cylinder Ø 500 / Ø 250 x 7100 mm …………………………………………… 1 pc
(Linear indicator of the gate position has been installed in the cylinder)
Hydraulic drive unit ............................................... ........................................... 1 pc
(Reservoir V = 1500 l, 2 pump units Q = 85 l /min, p = 320 bar, N = 30 kW)
Electric cubicle………………………………………………………………… 1 pc
WORKING GATE
Cylinder Ø 500 / Ø 250 x 7100 mm …………………………………………… 1 pc
(Linear indicator of the gate position has been installed in the cylinder)
Control block ................................................ .................................................... 1 pc.
Hydraulic drive unit ........................................................... ............................... 1 pc
(Reservoir V = 1500 l, 2 pump units Q = 85 l /min, p = 320 bar, N = 30 kW)
Electric cubicle………………………………………………………………… 1 pc

Design, manufacture, testing, delivery and handover of equipment on-site have been performed in January 2009.


PUMPING STATION ON THE WEST MORAVA RIVER - SERBIA 2007

Construction of water intake on the Zapadna Morava River was performed, together with pumping station (implementation of Phase II), where hydro-mechanical and electric part was done in Trstenik.
Completely new hydraulic and electrical installation with associated construction works at pump station has been installed.

PUMPING STATION "BEZDAN II", SERBIA - 2007.

Reconstruction of servomotor of the pumping station Bezdan II has been done.
Repair of hydraulic cylinder with complete auxiliary equipment that is installed directly onto and into the cylinder has been performed.

HYDRO ELECTRIC POWER PLANT “DJERDAP”, SERBIA - 2007

Revitalization of the electro-hydraulic and pneumatic equipment of water lock "Pancevo” has been done.
Complete overhaul of hydraulic drive installation for three segmented gates of the water lock "Pancevo" has been performed as follows:

- Repair of hydraulic cylinders Ø 280 / Ø 125 x 4360 mm of segmented gates ................................................................................ 6 pcs.
- New position indicators were installed into the cylinder piston rod ................ 6 pcs
- New hydraulic blocks ....................................................... ............................ 3 pcs.
- Overhaul of the hydraulic reservoir V = 1000 l ........................................... 1 pc.
- New pump units Q = 20 l /min, P = 320 bar, N = 15kW .............................. 2 pcs
- New electric cubicle
- New pipeline and associated equipment of the pipeline
Contract value: 14,180,000.00 RSD


HYDRO ELECTRIC POWER PLANT "SANGTUDA 1" - TAJIKISTAN 2008

Hydraulic drive is designed to maneuver the basic-segmented gates of the water lock chamber of the final facility on left wing of construction-exploitation water exit.

Cylinder Ø 450 / Ø 220 x 8250 mm ……………………………………………2 pcs
(With installed position indicators in the form of wire)
Control blocks ................................................ ................................................... 2 pcs
Hydraulic drive unit
(Reservoir V = 1450 l, two pump units Q = 80 l /min, p = 320 bar, N = 30 kW) ... 1 pc.
Electric control cubicles ............................................... ..................................... 1 pc

New cylinders were factory tested and delivered, as well as new drive units, new control blocks and a new electric cubicle.
Design, manufacture and supply of electro-hydraulic control system, on-site installation, testing, commissioning as well as on-site theoretical and practical training of the staff have been performed.



V1-V6 FLOOD PROTECTION OF THE CITY OF SAINT PETERSBURG, RUSSIA 2008


Electro-hydraulic drive is intended for maneuvering 64 segmented gates facility V1-V6, in order to prevent flooding of the city of Saint Petersburg.

Cylinder Ø 450 / Ø 200 x 4500 (7500) mm ………………………………..…64 pcs
Control blocks ................................................ .................................................. 64 pcs
Hydraulic drive unit
(Tank, V = 12000 l, two pump units Q = 180 l /min, p = 320 bar, N = 75 kW) 6 pcs.
Electric control cubicles............................................ ......................................... 6 pcs
New operating units were factory tested and delivered, as well as new control blocks, new electric cubicles and new distribution pipe that are all installed in conjunction with existing-refurbished hydraulic cylinders.
Design, manufacture and supply of electro-hydraulic control system, on-site installation, testing, commissioning as well as on-site theoretical and practical training of the staff has been done. Control blocks allow simultaneous lowering of up to 12 gates providing synchronous movement of cylinders of each gate.



DAM “GAMGOUM", TUNIS 2008

WATER PUMPING TOWER
Cylinder Ø 140 / Ø 63 x 1350 mm ………………………………………………. 3 pcs
(With built-in stick position indicator)
Hydraulic drive unit
(Reservoir V = 250 l, two pump units Q = 6.3 l /min, p = 250 bar, 2.2 kW )........ 1 pc.
Control blocks ................................................ ....................................................... 3 pcs
Electric control cubicle ............................................... .......................................... 1 pc
Pipeline with additional equipment ....................................................................... 1 set
Hydraulic drive is designed to maneuver three slide gates of water pumping tower.

EXIT GATE ROOM

Cylinder Ø 140 / Ø 63 x 1350 mm ………………………………………………1 pcs
(With built-in stick position indicator)
Hydraulic drive unit
(Reservoir V = 250 l, two pump units Q = 6.3 l /min, p = 250 bar, 2.2 kW )........ 1 pc.
Control blocks ................................................ ....................................................... 1 pc
Electric control cubicle ............................................... .......................................... 1 pc
Pipeline with additional equipment ........................................................................ 1 set

Hydraulic drive is designed to maneuver a slide gate of the exit gate room, as well as to drive the butterfly gate at the exit pipe.

Design, project coordination, production of equipment, factory testing, packing for overseas transport, delivery of equipment and supplies for water pumping tower and exit gate room, as well as delivery of complete technical documentation with instructions to dam GAMGOUM in Tunisia was completed in 2008. Electro-hydraulic equipment was put into operation in 2009 and final handover of equipment was performed.


DAM ON RIVER TISA, SERBIA, 2008

General overhaul of hydraulic installation of water lock on the Tisa dam, field number 1, has been performed.
Complete overhaul of hydraulic installations has been undertaken, as follows:

- Reparation of hydraulic cylinders Ø 500 / Ø 200 x 5200 mm of segmented gate ................................... 2 pcs.
- Reparation of hydraulic cylinders Ø 250 mm x 1500 of flap of segmented gate ................................... 1 pc.
- Overhaul of hydraulic blocks ................................... 2 pcs.
- Overhaul of hydraulic power unit .................................. 1 pc.
- Reparation of pipelines and related equipment on the pipeline


DAM “BRESNICA"-PROKUPLJE, SERBIA 2008
 


General o
verhaul of hydro-mechanical equipment on the water pumping tower and pipe gallery of the slide gate, crane repair, substitution of flat gate NO 800 with butterfly gate NO 800, dismantling of flat slide valves NO 350NP10 (3 pcs) and substituting them with Butterfly gates that are electronically driven, delivery and installation of electric cubicle for gate drive , corrosion protection of equipment in the gallery and water pumping tower (pipeline NO 800 and NO 350, area P = 800M) on dam "Bresnica" - Prokuplje.


VOLGA-DON CANAL-VOLGOGRAD, RUSSIA 2009



Electro-hydraulic system for typical slide gate of the water lock for “Volga-Don” canal, complete technical documentation for two variants of the project for driving the slide gate and for control of the movement of slide gate of the water lock have been developed. The project detailed two types of design solutions up to the level of ready documentation for development of electro hydraulic systems. The first variant is based on the use of volumetric damping control and the second variant is based on the use of pumps with constant flow whose operations are controlled through frequency converters. Within project documentation in the part relating to the calculations, the complete simulation of the dynamics of operation of electro hydraulic systems was given for both variants in the MATLAB program package.

“DAM GRUŽA “, SERBIA- 2009
  


General overhaul of the hydraulic drive of conical gate NO 200 dam "Gruža" Kragujevac.
We performed repairs of hydraulic installations, as follows:
- Repair of hydraulic cylinders drive of the conical gate........................... 2 pcs.
- Repair of pipelines and related equipment on the pipeline



HYDRO ELECTRIC POWER PLANT “DJERDAP II”, SERBIA - 2009


Delivery and installation of two electro-hydraulic pump unit for emergency intake gate at the HPP “DJERDAP II” - Negotin in Kusjak.
Modernization was performed over the original electro-hydraulic power system developed by PPT- Engineering in 1987, by installation of standardized block for pump unit with flow of up to 200 l / min and pressure of up to 250 bar instead of previous components for control of pump pressure that were installed on pipes. All components are using the technology of logic elements and the filter on the pressure line is connected to the block using flange.



HYDRO ELECTRIC POWER PLANT "ROGUNSKA" TAJIKISTAN 2009



Production of workshop technical documentation for fabrication of equipment for hydraulic drive for control of gates in construction tunnels of 1st and 2nd gallery of  “Rogunska” HPP in Tajikistan.
Based on the technical task the project documentation for production, installation and operation of repair chamber gates and basic chamber gates (segmental and slide gates).
Project documentation was verified by an independent consulting company, after which the production of equipment started at the beginning of 2010.

HYDRO ELECTRIC POWER PLANT "ROGUNSKA" TAJIKISTAN 2010

• REPAIR GATE CHAMBER
Cylinder Ø 1000 / Ø 710 x 770 mm …………………………………………….3 pcs
Hydraulic drive unit
(Reservoir V = 1500 l, pump unit Q = 195 l /min, p = 320 bar, N = 75 kW )........ 3 pcs.
Electric control cubicle ............................................... ..................................... 3 pcs
Hydraulic drive is designed to maneuver the six repair-slide gates of construction tunnels of the first and the second gallery.
Design of a new electro-hydraulic control installation has been done, which facilitates easier manipulation of the gates.
New driving units were f
actory tested and delivered as well as new control cubicles and new pipe distribution system that is installed together with existing repaired hydraulic cylinders.
Commissioning of electro-hydraulic installation was completed in November 2012.

• CHAMBER OF BASIC EMERGENCY - REPAIR GATES
Cylinder Ø 800 / Ø 400 x  7640 mm ………………………………………… 6 pcs
Control blocks ................................................ ................................................. 6 pcs
Hydraulic drive unit
(Reservoir V = 10000 l, two pump units Q = 260 l / min, p = 320 bar, N = 90 kW) .. 1 pc.
Electric control cubicle ............................................... ..................................... 6 pcs
Hydraulic drive is designed to maneuver six basic emergency - repair gates of construction tunnels of the first and the second gallery.
Design of a new electro-hydraulic control installation has been done, which facilitates easier manipulation of emergency-repair slide gates.
New drive units were f
actory tested and delivered, as well as new control blocks, new electric cubicles and new pipe distribution system that are mounted on existing repaired hydraulic cylinders.
Commissioning of electro-hydraulic installation was completed in November 2012.

• CHAMBER OF BASIC RADIAL GATES
Cylinder Ø 560 / Ø 250 x 6730 mm …………………………………………… 6 pcs
Gate position indicator - an independent circuit ............................................ ..... 6 pcs
Control blocks ................................................ .................................................... 6 pcs
Hydraulic drive unit
(Reservoir V = 4000 l, two pump units Q = 245 l /min, p = 320 bar, N = 90 kW) .. 1 pc.
Electric control cubicles ............................................... ..................................... 6 pcs
Hydraulic drive is designed to maneuver six basic segmented - work gates of construction tunnels of the first and the second gallery.
Design of a new electro-hydraulic control installation has been done, which facilitates easier manipulation of segmented gates.
New drive units were f
actory tested and delivered, as well as new control blocks, new electric cubicles and new pipe distribution system that are mounted on existing repaired hydraulic cylinders.
Commissioning of electro-hydraulic installation was completed in November 2012.



HYDRO ELECTRIC POWER PLANT “DJERDAP II”, SERBIA - 2010

Modernization was performed over the original electro-hydraulic power system developed by PPT- Engineering in 1987, by installation of standardized block for pump unit with flow of up to 200 l / min and pressure of up to 250 bar instead of previous components for control of pump pressure that were installed on pipes. All components are using the technology of logic elements and the filter on the pressure line is connected to the block using flange.

 

DAM “OURKISS "- ALGERIA 2010


Cylinder Ø 250/110 x 1550 mm ……………………………………………2 pcs

(With built-in stick position indicator)
Hydraulic drive unit
(Reservoir V = 250 l, two pump units Q = 10 l  min, p = 280 bar, N = 5.5 kW) ……….1 pc
Control blocks ................................................ ............................................... 2 pcs
Electric control cubicles ............................................... ..................................1 pc

The project was submitted for approval to the investor. After verification of the project the production of electro hydraulic control system for operation of safety and working gate of the foundation outlet of the dam "Ourkiss" in Algeria will begin.
Delivery, commissioning and final handover of electro-hydraulic installation was completed in 2011.



HYDRO ELECTRIC POWER PLANT "ROGUNSKA" TAJIKISTAN 2010


• CHAMBER OF INCIDENT-REPAIR GATES OF THE TEMPORARY INTAKE PENSTOCK

Cylinder Ø 1060/450 x 7600 mm ……………………………………………2 pcs

(With built-in stick position indicator)

Hydraulic drive unit
(Reservoir V = 6000 l, two pump units Q = 340  l  min, p = 255 bar, N = 200 kW) ……….1 pc

Control blocks ................................................ ............................................... 2 pcs
Electric control cubicles ...................................................................................2 pc


The investor has approved of the project in September 2011. The equipment was delivered in December 2012.


REFERENCES  2006-2010