1. The document discusses hydraulic pokers used for vibrating concrete, especially for dam, harbor, and wave breaker projects. It provides details on the BH160 poker including its dimensions, vibration properties, and hydraulic requirements.
2. Customized hydraulic poker beams can be assembled and attached to carriers like excavators or bulldozers. The document outlines considerations for choosing an appropriate excavator based on the number of pokers, beam weight, and excavator specifications.
3. Guidelines are provided for effective vibration of concrete including depth, cycle, capacity calculation, and positioning of pokers to fully compact the material without over-vibration. Examples and pictures from dam projects in Iran and harbor works demonstrate successful
development of main headings and gate roads with the use of road heading and bolter miners has paramount importance for effective production from a Longwall mine
The company was incorporated with the dream of serving excellence with perfection. The company has gained the strong clientele with long term relationship of service. Today, the company is well - known for the quality services with expected quality
development of main headings and gate roads with the use of road heading and bolter miners has paramount importance for effective production from a Longwall mine
The company was incorporated with the dream of serving excellence with perfection. The company has gained the strong clientele with long term relationship of service. Today, the company is well - known for the quality services with expected quality
Piletec Brochure - Piling Hammer BrochureLewis Ryan
Piletec Brochure with our full range of EMV, FSV, Croppers, Culvert Puller, Vibration Monitors and Augers.
Specifications of all equipment on offer to hire today.
View the UK's largest fleet of piling attachments.
Solutions de manutention des poudres
Manutention des pulvérulents
Equipement de manutention
Manutention poudre
Manutention poudres
Manutention produit vrac
Manutention vracs
Process poudre
Technologies manutention poudre
Process industriels traitant des poudres
Flow measurement for dry bulk solids MaxxFlowTiago Morais
MaxxFlow HTC
Fall through measurement
of high mass flow rates
For measurement of high mass flow rates for dry solids from the exit of pre feeding devices,
e. g. screw conveyors, air slides, rotary valves, bucket elevators, etc.
● Most non-metallic solids can be measured
● Can be installed on round pipes or ducts
● No real upper limit of mass flow
● Maximum pressure 10 bar
● Dust tight
● No flow restrictions to the process flow (wear resistant ceramic liner)
● The mass flow measurement is independent of flow characteristics
● Maximum temperature, 12O °C
● Can be installed at an angle
● Small footprint, 220 mm (DN 100), 290 mm (DN 150), 310 mm (DN 200)
● No moving parts, hence no maintenance
The MaxxFlow HTC is specially developed for the flow measurement of dry bulk solids during high-volume throughput. Due to its completely open profile and its low installation height, the MaxxFlow HTC is especially suitable in situation in which it was previously only possible to use complicated or expensive mechanical solutions, e. g. impact plates or measuring chutes.
The installation of the MaxxFlow HTC takes place independently of the direction of the line (vertical/inclined), but always after mechanical conveyor elements,
e. g. rotary feeder, screw conveyors, air slides or chain conveyors.
After the conveyor, the material to be measured falls or slides through an inlet path and runs through the sensor. During the throughput, the MaxxFlow HTC records the material type and speed. Since the material falls from a constant height after emerging from the conveyor element, the speed of the product stream is accelerated, but is constant at the installation position of the sensor.
Due to this constant speed, the speed measurement does not need to be activated in every case, but can be calculated as a constant depending on the height of the fall. The mass flow is determined as follows:
Q (kg/s) = K (kg/m3) x v (m/s) x A (m2)
Through the input coupling of a high-frequency, electro-magnetic alternating field, a homogenous measuring field is generated in the measuring tube.
The measuring tube (interior tube of the sensor) consists of wear-resistant Al2O3 ceramics. Dry bulk solids inside the measuring field reduce the amplitude of the alternating field.
This leads to a measuring signal that is in proportion to the concentration of the dry bulk solids in the sensor (kg/m3).
If the material speed varies, for example due to a change in initial speed, then this can also be measured.
This takes place through a runtime measurement with the help of two additional electrodes behind the interior ceramics tube.
PROJECT REPORT ON BHEL BHOPAL FOR MECHANICALRohitsen21
This presentation is on vocational training that I have done between 12 july to 1 august, in BHEL BHOPAL I visited all the blocks and our training was sheduled to WTM block and traction motor block.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Piletec Brochure - Piling Hammer BrochureLewis Ryan
Piletec Brochure with our full range of EMV, FSV, Croppers, Culvert Puller, Vibration Monitors and Augers.
Specifications of all equipment on offer to hire today.
View the UK's largest fleet of piling attachments.
Solutions de manutention des poudres
Manutention des pulvérulents
Equipement de manutention
Manutention poudre
Manutention poudres
Manutention produit vrac
Manutention vracs
Process poudre
Technologies manutention poudre
Process industriels traitant des poudres
Flow measurement for dry bulk solids MaxxFlowTiago Morais
MaxxFlow HTC
Fall through measurement
of high mass flow rates
For measurement of high mass flow rates for dry solids from the exit of pre feeding devices,
e. g. screw conveyors, air slides, rotary valves, bucket elevators, etc.
● Most non-metallic solids can be measured
● Can be installed on round pipes or ducts
● No real upper limit of mass flow
● Maximum pressure 10 bar
● Dust tight
● No flow restrictions to the process flow (wear resistant ceramic liner)
● The mass flow measurement is independent of flow characteristics
● Maximum temperature, 12O °C
● Can be installed at an angle
● Small footprint, 220 mm (DN 100), 290 mm (DN 150), 310 mm (DN 200)
● No moving parts, hence no maintenance
The MaxxFlow HTC is specially developed for the flow measurement of dry bulk solids during high-volume throughput. Due to its completely open profile and its low installation height, the MaxxFlow HTC is especially suitable in situation in which it was previously only possible to use complicated or expensive mechanical solutions, e. g. impact plates or measuring chutes.
The installation of the MaxxFlow HTC takes place independently of the direction of the line (vertical/inclined), but always after mechanical conveyor elements,
e. g. rotary feeder, screw conveyors, air slides or chain conveyors.
After the conveyor, the material to be measured falls or slides through an inlet path and runs through the sensor. During the throughput, the MaxxFlow HTC records the material type and speed. Since the material falls from a constant height after emerging from the conveyor element, the speed of the product stream is accelerated, but is constant at the installation position of the sensor.
Due to this constant speed, the speed measurement does not need to be activated in every case, but can be calculated as a constant depending on the height of the fall. The mass flow is determined as follows:
Q (kg/s) = K (kg/m3) x v (m/s) x A (m2)
Through the input coupling of a high-frequency, electro-magnetic alternating field, a homogenous measuring field is generated in the measuring tube.
The measuring tube (interior tube of the sensor) consists of wear-resistant Al2O3 ceramics. Dry bulk solids inside the measuring field reduce the amplitude of the alternating field.
This leads to a measuring signal that is in proportion to the concentration of the dry bulk solids in the sensor (kg/m3).
If the material speed varies, for example due to a change in initial speed, then this can also be measured.
This takes place through a runtime measurement with the help of two additional electrodes behind the interior ceramics tube.
PROJECT REPORT ON BHEL BHOPAL FOR MECHANICALRohitsen21
This presentation is on vocational training that I have done between 12 july to 1 august, in BHEL BHOPAL I visited all the blocks and our training was sheduled to WTM block and traction motor block.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
NUMERICAL SIMULATIONS OF HEAT AND MASS TRANSFER IN CONDENSING HEAT EXCHANGERS...ssuser7dcef0
Power plants release a large amount of water vapor into the
atmosphere through the stack. The flue gas can be a potential
source for obtaining much needed cooling water for a power
plant. If a power plant could recover and reuse a portion of this
moisture, it could reduce its total cooling water intake
requirement. One of the most practical way to recover water
from flue gas is to use a condensing heat exchanger. The power
plant could also recover latent heat due to condensation as well
as sensible heat due to lowering the flue gas exit temperature.
Additionally, harmful acids released from the stack can be
reduced in a condensing heat exchanger by acid condensation. reduced in a condensing heat exchanger by acid condensation.
Condensation of vapors in flue gas is a complicated
phenomenon since heat and mass transfer of water vapor and
various acids simultaneously occur in the presence of noncondensable
gases such as nitrogen and oxygen. Design of a
condenser depends on the knowledge and understanding of the
heat and mass transfer processes. A computer program for
numerical simulations of water (H2O) and sulfuric acid (H2SO4)
condensation in a flue gas condensing heat exchanger was
developed using MATLAB. Governing equations based on
mass and energy balances for the system were derived to
predict variables such as flue gas exit temperature, cooling
water outlet temperature, mole fraction and condensation rates
of water and sulfuric acid vapors. The equations were solved
using an iterative solution technique with calculations of heat
and mass transfer coefficients and physical properties.
HEAP SORT ILLUSTRATED WITH HEAPIFY, BUILD HEAP FOR DYNAMIC ARRAYS.
Heap sort is a comparison-based sorting technique based on Binary Heap data structure. It is similar to the selection sort where we first find the minimum element and place the minimum element at the beginning. Repeat the same process for the remaining elements.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
2. 2
BH160 introduction
• Hydraulic pokers especially designed for dam,harbour projects,
waves breakers…
• Used as a set, assembled on a carrier (hydraulic excavator,
buldozer, frame…)
• ATLAS COPCO can supply the BH160 beams assembled on a
hydraulic beam
•Customized design for specific attachment
• Start-up and on-site assistance by ATLAS COPCO technicians
details Poker BH160
Diameter of vibrating element (mm) 155
Length of vibrating element (mm) 472
Length of rigid section (mm) 1145
standard length of the hose (mm) 2000
average frequency on load (rpm) 7500
Idling frequence** (mm) 2500
Oil consumption per poker (l/mn) 20
Maxi pressure on load (bars) 160
Centrifugal force on load (N) 20348
Amplitude (mm) 4,3
** Low idle speed adjusted locally as per weather site condition
3. 3
Detailled explanation of the Hydraulic Set
•An heavy duty alternative to the electric & pneumatic pokers for dam, dry docks, heavy foundation,
waves-breakers and all mass concrete vibration applications.
•Present on many dams around the world during the last years (three gorges dam in China, Karoun 3&4 dam in
Iran, Subansiri dam in India, break wavers in le Havre, France…) ATLAS COPCO has built a strong and
reliable products to satisfy the customer’s daily intensive concreting needs.
•ATLAS COPCO can supply the hydraulic pokers BH160 from poker alone to a set of 1 to 8 pokers connected
to an hydraulic beam assembled on a carrier (hydraulic excavator, bulldozer, frame…)
•ATLAS COPCO provides also start-up and on-site assistance, operation and maintenance training.
•ATLAS COPCO provides customized design for specific attachment to fit on any carrier brands.
•An Ultrasonic sensor detects the concrete and launches the high idle speed vibration.
•The hydraulic system is controlled by an integrated electronic system.
•The set is equipped with an Hydraulic +/- 90° rotation system to vibrate entirely the surface.
•Each poker attachment offers a Mechanical +/- 10° oscillation of the poker to avoid any damages in the
structure when the pokers goes inside the concrete.
•A foldable crutch under the hydraulic beam allows to pose the beam on the floor.
•As a standard, an Hydraulic pressure gauge per poker shows instantaneously if the poker is working in
good condition.
•The system control panel in the cabin can also be equipped with optional digital pressure meters.
•Depending on weather conditions, an hydraulic oil cooler can be installed on the excavator.
•As a complement, large pneumatic diameter poker AY87, 107 or 157 or electric poker AN90 can be
used to vibrate the edges and corners.
4. 4
CHOICE OF THE EXCAVATOR
Concreting Capacity numbers of pokers
Numbers of pokers numbers of excavators + weight of each beam
Type of excavator maximum lifting capacity (weight class)
Two possibilities:
1 – the customer chooses the excavator by himself
2 – The customer ask us to specify some possible excavators
We need to check:
- maximum flow of the excavator pressure variable pump (l/min)
- maximum rated power of the engine (hp)
- Type of excavator maximum lifting capacity (weight class)
?
5. 5
VIBRATION CAPACITY
Hydraulic beam rotation system
Working zone of vibrators beam
Limit of vibration
Radius of effectiveness of pokers
Calculation of the vibrating capacity :
Volume to be vibrated = M
Periodicity in months = x
Daily hours of concreting = H
C = M / (H*30*X) (m3/hr)
Theoritical capacity of a BH160 = 45m3/hr
750 mm 750 mm 750 mm
720 mm 720 mm
6. 6
VIBRATION CYCLE
1 - The boom of the carrier goes down, the poker
vibrates slowly
2 - The ultrasonic sensor detects the concrete and starts the
high speed vibration
4 - The boom of the carrier goes up, the sensor
does not detect the concrete anymore, the poker
turns slowly.
3 - The boom of the carrier immerses the poker,
the concrete
Is vibrated for a certain perdiod.
7. 7
VIBRATION DEPTH
Wet concrete Max 60 cm
Dry concrete
When using the poker to spread the
concrete, be carefull that the poker does not
touch to the dry concrete below.
Broken plates
8. 8
VIBRATION CAPACITY
Vib. 1
ETC……
Vib.
5
Result :
•No good vibration strategy
•Loss of time
•Loss of productivity
•Loss of energy (fuel…)
•Lack of vibration in some places resulting concrete compaction and air voids left in concrete
•Over-vibration in some places resuting weak concrete
NOT GOOD
9. 9
VIBRATION CAPACITY
750 mm
Limit of vibration
Radius of effectiveness of pokers
Vib. 1
Vib. 4
Vib. 3
Vib. 2
ETC……
Vib.
5
Possible
positionning if
necessary
GOOD
Result :
•Good productivity
•Energy saving (fuel…)
•Good vibration with perfect concrete compaction
•No air voids left in concrete
10. 10
POKER BEAM HYDRAULIC DIAGRAM
Designation Unit Value
Average frequency in air (rpm) 8000
Average frequency in concrete (rpm) 7500
Idling frequency (rpm) 2500
Maxi system pressure on load (bars) 160
Normal poker pressure in concrete (bars) 110
Average centrifugal force on load (N) 20348
Amplitude (mm) 4.3
Poker Input flow (l/min) 18
Total system input flow (l/min) 144
Number of vibrators 8
Rotating system 90°
Max rotation motor flow l/min 20 to 30
Hydraulic poker motors
Individual poker flow
regulator (max. 18l/min)
Beam rotation motor
Flow regulator for
beam rotation motor
Electrovalve
Pressure regulator
and flow divider
Filter
11. 11
STANDARD PRESSURE GAUGE PANEL
Pressure gauge for each poker
•Low speed, pressure around 40 to 50 bars.
•High speed in air, pressure around 70 to 80
bars.
•High speed in concrete, pressure around 90
to 100 bars
Standard Hydraulic pressure gauges come
with the machine if the optional digital
pressure gauges are not ordered.
One std hydraulic pressure gauge for each
poker.
The pressure gauge are connected directly
on the individual poker flow regulators
aluminium block.
They are located on the hydraulic beam.
12. 12
Bypass switch to be
used if the ultrasonic
sensor is durty
STANDARD CONTROL PANEL
If this light is ON, change
the filter inside the beam
Don’t start high speed
until this light is OFF.
Joystick to rotate the beam
OFF button
ON button
13. 13
Bypass switch to be
used if the ultrasonic
sensor is durty
OPTIONAL PRESSURE GAUGE PANEL
If this light is ON, change
the filter inside the beam
Don’t start high speed
until this light is OFF.
Joystick to rotate the beam
OFF button
ON button
Pressure gauge for each poker
•Low speed, pressure around 40 to 50
bars.
•High speed in air, pressure around 70
to 80 bars.
•High speed in concrete, pressure
around 90 to 100 bars
14. 14
KAROUN 3 – DAM PROJECT - IRAN
Length of the vault : 800m
Elevation of the vault : 230m
Elevation above sea level : 1032m
Four turbines of 250 MW each (263MVa each)
Three inlets for the turbines of 171m3/s
Lake length : 41km
Lake surface : 29.23 km²
Volume of reservoir : 2.1 Bm3
Concreting capacity : 60000m3 / month
Total volume of concrete : 3.6M m3
Finalization of project : 5 years
Karoun
3
after
elevation
15. 15
VIBRATION
Concrete before vibration
Concrete caracteristics:
Earth moist concrete (Slump : 0cm)
Max Size. Aggregate : 150 mm (ASTMC125 & ACI207.1R9to 11)
Aggregate : 0-5mm = 630Kg/m3
Aggregate : 5-10mm = 210Kg/m3
Aggregate : 10-30mm = 520Kg/m3
Aggregate : 30-60mm = 420Kg/m3
Aggregate : 60-120mm = 630Kg/m3
Cement content : 200Kg/m3
Concrete layer thickness : 50 – 60cm each
Water/cement Ratio : 0.5
Addition of Ice Cubes to slow down the chemical reaction (60kg/m3)
Concrete after vibration
17. 17
WAVE BREAKERS
Basically used for harbor dam
projects or river shores flooding
protection.
They are poured in specially made
formwork.
High production capacity.
Concrete blocks to be well vibrated
due to partial / full immersion in
salt/soft water.
18. 18
PNEUMATIC POKERS
In combination with hydraulic pokers, on a dam project, to prevent the formwork to
collapse, we recommend touse some pneumatic pokers (AY157) in order to vibrate the
edges of the lifts.
The pneumatic pokers have less power than the hydraulic ones, a one meter band has to
be vibrated handly.
In some cases, the contractor chooses to adapt on an independant air compressor located
on the excavator one or two pneumatic pokers.