WO2006120699A2 - Systeme de déchargement de barge - Google Patents

Systeme de déchargement de barge Download PDF

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Publication number
WO2006120699A2
WO2006120699A2 PCT/IN2006/000093 IN2006000093W WO2006120699A2 WO 2006120699 A2 WO2006120699 A2 WO 2006120699A2 IN 2006000093 W IN2006000093 W IN 2006000093W WO 2006120699 A2 WO2006120699 A2 WO 2006120699A2
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WO
WIPO (PCT)
Prior art keywords
barge
gate
buoyancy compartment
seat
buoyancy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/IN2006/000093
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English (en)
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WO2006120699A3 (fr
Inventor
Sudi Abdul Rahiman Imamuddin
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Individual
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Individual
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Publication date
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Publication of WO2006120699A2 publication Critical patent/WO2006120699A2/fr
Publication of WO2006120699A3 publication Critical patent/WO2006120699A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/28—Barges or lighters
    • B63B35/30—Barges or lighters self-discharging
    • B63B35/306—Barges or lighters self-discharging discharging through dump-gates on the bottom or sides of the barge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/28—Barges or lighters
    • B63B35/30—Barges or lighters self-discharging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/28—Barges or lighters
    • B63B35/30—Barges or lighters self-discharging
    • B63B35/301—Barges or lighters self-discharging discharging by turning over part of or the whole barge

Definitions

  • Present invention relates to the barge emptying method for unloading the granular bulk contents of the barge from the bottom opening of the barge.
  • Present invention also relates to a category of self-unloading barges .or vessels meant for quick unloading of granular bulk cargo.
  • Present invention relates to a method involving buoyancy compartments for raising and tilting the granular bulk loaded barge for unloading its contents.
  • Granular bulk material such as various metal ores, coal, lime stone, gravels, crushed or quarried stones, sand and other industrial raw and finished material that are granular in nature and which are transported in bulk quantity in a mother ship which can not travel up to point of actual unloading due to inadequate cargo unloading facility or unable to navigate due to shallow waters, in such situations bulk contents of the ship is generally loaded on to the barges to transport the material to desired location and unload it quickly to save the turn around time of the ship.
  • the methods of prior art adopted for emptying the barges containing granular material include, single bucket cranes, multiple bucket conveyors, multiple bucket wheels and screw conveyors, which are common in use compared to the other type of barge or vessel tilting or upsetting systems, to which the present invention relates.
  • the bucket unloading system may be a mobile or a fixed installation, is used for unloading granular bulk cargo, carried by a vessel or a barge, into land based or into a floating receiver, do not handle the barge directly.
  • the open hopper barge remains anchored in water within the operational reach of the unloading system.
  • the extract of the buckets is limited due to their limitations of movements and reach within the hopper resulting in incomplete unloading of cargo. Also such systems are relatively slow and affecting the turn around time of the barge. These systems incur huge cost of installation, operation and maintenance with additional drawback of noise and air pollution.
  • a rotating cylinder system wherein the barge is secured in a trough supported within a cylinder, then the cylinder is rotated by gear mechanism (Note US Pat. No. l, 823,172 issued on 15.9.1931.)
  • An inclined track system wherein the barge is secured in a carrier that is translated by rack gears all along the ramp to a rolling unit which is then rotated by cables (Note US Pat. No.3, 537,600 issued on 3.11.1970)
  • Open hopper barge is lifted above the water by clamping the barge with the floating platform having ballast tank whose water is replaced by compressed gas. At required height the loaded barge is stopped and tilted by hydraulic arm to empty the bulk in to another floating body (Note US Patent No. 5,020,956)
  • a cargo vessel is secured in a container and lifted from the water by pulley-block mechanism and emptied into a receiver by tipping the container (Note GB Pat. No. 244343)
  • the granular bulk loaded barge having plurality of interconnected and partly covered hoppers, discharges its entire contents directly into a receiver through the bottom opening provided to one of the hopper of the barge, comprising material discharging arrangements to discharge the contents from the bottom of the barge.
  • the present invention eliminates any additional means for emptying the barge.
  • the first object of the present invention is to provide a self- unloading barge alongwith practical, safe, reliable, quick, economical and easy operateable and maintainable system.
  • the second object of the present invention is to provide a hazardless, superior system and method for emptying the granular bulk loaded barge having significantly low Air, Water and Sound pollution, which is the basic qualifying criteria or essential requirements of modern industry.
  • the third object of the present invention is to provide a completely watertight sealing arrangement for the bottom opening of the barge, which is essential requirement of a barge or vessel having bottom opening or bottom-dumping arrangement.
  • the forth object of the present invention to provide a barge capable of transporting heavy load of granular bulk and also emptying its contents on the land based receiver through its bottom opening while resting in tilted position.
  • the fifth object of the present invention is to provide a system and the method enabling the unloading of granular bulk material from the barge as described in the invention.
  • the sixth object of the present invention is to provide a system for handling the higher load carrying barge and emptying its granular bulk content without the use of additional mean of emptying its contents, wherein the buoyancy principle is employed for lifting as well as for tilting the barge at an elevation above the level of the water body without the use of any costly means and external force particularly for lifting the floating height of the barge with respect to water body and for tilting of the loaded barge.
  • this object is achieved by using system that operates reliably in all respect, even during adverse climatic conditions and variable water levels, since the barge emptying operation is carried out by isolating the barge from the water body, in which it is floating, and protected from surrounding conditions during barge emptying operation hence eliminates the operational hurdles.
  • Fig. 1 is the side elevated view, top view and the bottom view of the double bottom barge (500) indicating its construction and the general arrangement inclusive of plurality of hoppers (502) and material discharging hopper (601), plurality of partition plates (504), spillage prevention plate (505), bolting arrangement of the hinged gate (607) with the bottom plate of the barge (500), winches (EW-A and EW-B) mounted on the barge deck, the guide blocks (503A, 503B, 503C and 503D) integral to four corners of the barge, the view also shows the plurality of barge anchors (501) which are protruding out from the outer body of the barge (500).
  • Fig. 2 is a cross sectional details of the in material discharging hopper (601) equipped with bottom dumping arrangement which comprises the plate gate (602), the duct (603), winch cables (EWR-A and EWR-B), and the guide pulleys (EWP-A and EWP-B) which are anchored inside the duct (603) is the operating system provided for operating the hinge gate (607), seepage water level sensor (605), seepage water suction nozzle (604) connected to water pump (606), the barge bottom hinged gate (607) which is hinged with the bottom plate of the barge (500) which is shown in bolted condition indicating its stud bolts (609) and nuts (608) and the water sealing gasket (610).
  • Fig. 3 is a sectional view of the barge (500) showing four guide blocks (503A, 503B,
  • Fig. 4 is a top view which shows the buoyancy compartments (1001 and 1002), the barge access gate (101) and the interconnecting gate (102) installed between the said two buoyancy compartments, barge seat (1003) shown along with its arced slots (1005) on its inner side walls and in its top surface of its base, the slide gate (1004) at the bottom of the barge seat (1003) and material receiving silo (2000) is constructed on the ground exactly below the barge seat (1003).
  • Fig. 5 is a sectional view of the buoyancy compartment (1002) along with the barge seat (1003) viewed from the side which shows the inside shape and other details such as tilted base of the barge seat (1003), plurality of arced slots (1005), an opening which forms a port in the barge seat (1003), slide gate (1004) which is shown in open and retracted position and the material receiving silo (2000) constructed on the ground exactly below the barge seat (1003) is also shown.
  • Fig.6 shows the close view of one of the plurality of arced slots (1005), which are provided in the base of the barge seat (1003) in addition to plurality of arced slots on its side walls, into which the respective plurality of bottom anchors (501) of the barge (500) get engaged when the barge (500) gradually tilts and comes to rest and anchored in the barge seat (1003).
  • Fig. 7 show the bottom view and the sectional details of the slide gate (1004), the gate (1004), with water sealing gasket (1006) secured in its flange, is shown in bolted condition which provides a watertight joint around the bottom port of the barge seat (1003), the nuts (1007) are embedded in the bottom slab of the barge seat and the bolts (1008) are screwed in to nuts (1007) for bolting the gate (1004) with the barge seat (1003), the guide rails (1010) are integral to the bottom of the barge seat (1003) over which the slide gate (1004) moves up and down during its operation.
  • Fig. 7 show the bottom view and the sectional details of the slide gate (1004), the gate (1004), with water sealing gasket (1006) secured in its flange, is shown in bolted condition which provides a watertight joint around the bottom port of the barge seat (1003), the nuts (1007) are embedded in the bottom slab of the barge seat and the bolts (1008) are screwed in to nuts (1007) for
  • FIG. 8 is a side elevated view of the basic concept of the present invention of the barge emptying method, showing the stages (1 to 6) achieved by the loaded barge (500) during its emptying operation for unloading the granular bulk material carried by it.
  • This view also shows most of the components of the invention such as flood water pump (WP), buoyancy compartments (1001 and 1002) along with its inlet and outlet floodwater ducts (FWD-I, FWD-2) and flood water drain duct (FDD-3) and floodwater regulating valves (FVl, FV2, FDV-3), gates (101 and 102) and vertical slots (1001A, 1001B, IOOIC and 1001D)) on the inner side walls of the buoyancy compartment (1001) and the horizontal slots (1001AB and lOOlCD) are the common slots on the side walls of both the buoyancy comparlments (1001 and 1002).
  • WP flood water pump
  • buoyancy compartments (1001 and 1002) along with its inlet and outlet floodwater ducts (FWD-I, F
  • Fig. 9 is an inside sectional view of the buoyancy compartments (1001 and 1002) which shows the vertical slots (1001C and 100D) and horizontal slot (100 ICD) remaining vertical slots (1001A and 1001B) and horizontal slot (1001AB) are on the opposite walls, which is not shown in the figure, said vertical and horizontal slots are provided on the inner sidewalls of the buoyancy compartments.
  • Fig.lO is a top view of the buoyancy compartment (1001) and (1002) viewed when the barge is inside the buoyancy compartments wherein the guide blocks are engaged in barge guiding slots during up ward floating or raising of the barge (500) in buoyancy compartment (1001) (refer stage 1) and the guide blocks are shown in retracted position in buoyancy compartment (1002) wherein the barge (500) is in resting in tilted position (refer stage 2).
  • Fig 11 is a side view of the barge seat slide gate (1004) operating arrangement comprising slide gate operating winch (EW-3), guide pulleys (EWP-3), winch cable (EWR-3) which is hooked to slide gate (1004) for pulling the gate up wards to open the material dumping port at the bottom of the barge seat ( 1003) and releasing the gate to close the said port during barge unloading operation.
  • the nuts (1007) for bolting arrangements are embedded in the barge seat (1003) around the periphery of the material dumping port and the bolts (1008) are screwed in to nuts ( 1007) for bolting the gale (1004) with the bottom of the barge seat (1003).
  • Fig. 12 is a side elevated view which shows the barge pulling system provided for to and fro movements of the barge (500) between buoyancy compartment (1001) and the buoyancy compartment (1002) comprising winches (EW-I and EW-2), guide pulleys (EWP-I and EWP-2) and the winch cables (EWR-I and EWR-2).
  • winches EW-I and EW-2
  • guide pulleys EWP-I and EWP-2
  • EWR-I and EWR-2 winch cables
  • the barge (500), as claimed in the present invention, is a modified version of an open hopper, double bottom barge.
  • the plurality of interconnected and partly covered hoppers (502) of the barge (500) are constructed by welding plurality of partition plates (504) across the width of the open hopper of a barge at equal pitch (p) and at the same time leaving suitable vertical gap (g) between the bottom plate of the open hopper and the partition plates (504) to form plurality of interconnected hoppers (502) with bottom plate common to all.
  • the plurality of hoppers (502) always remains interconnected with each other through the bottom opening created due to the gap (g) provided between the partition plate (504) and the bottom plate of the hopper, so that the granular bulk contents of plurality hoppers can be easily discharged or transferred by gravity sliding into material discharging hopper (601) through this opening.
  • the purpose of creating plurality of hoppers (502) by providing partition plates (504) is to check and prevent the gravity sliding of granular material from one hopper to another during barge tilting operation thereby avoiding destabilising of loaded barge.
  • Gravity sliding of granular material generally occurs when the barge (500) is in the process of tilting and also after it achieves the tilted position in buoyancy compartment (1002) since the angle of its tilting is equals to the angle of repose suitable for gravity sliding of granular material loaded on the barge.
  • the partly covering to plurality of hoppers (502) including material discharging hopper (601) is imparted by welding spillage protection plates (505) with the side plates of the hoppers across the width of each hopper (502) in such a way that one end of the plate (505), which constitutes the length, is coinciding with the respective top end of the partition plate (504), which is towards the material discharging hopper (601 ), and the width of the spillage protection plate is such that the top opening of each hopper is partly covered keeping the major portion open for loading the material in to the hoppers.
  • the function of spillage protection plate (505) is to prevent the spillage of granular bulk material, which generally occurs when the barge (500) is getting tilted, particularly when the material of lesser specific weight is being handled such as coal.
  • the function of all the hoppers (502 and 601) of the barge (500) is to carry the load of granular bulk material.
  • the material-discharging hopper (601) is utilised for discharging the granular bulk from its bottom opening, apart from carrying the load.
  • Fig, 2 shows the cross sectional details of the material discharging arrangements constructed at the bottom of the material-discharging hopper (601).
  • the bottom discharging arrangement comprised of an opening in the bottom plate of the hopper (601) which acts as a material outlet port, and a plate gate (602) is installed to cover the said material outlet port of the hopper (601) so that the granular bulk load can be loaded and retained within the hold of the hopper (601) during the transportation.
  • the plate gate (602) in particular, can be operated by installing the hydraulic system or motorised gear mechanism, since sufficient force is required to overcome the weight of the granular cargo acting on the gate (602).
  • the plate gate (602) when opened during unloading operation it moves inside a housing, which is welded on the top of the hoper plate of the adjacent hopper (502). ⁇ Ref. section A-A offig.2)
  • the barge (500) is a double bottom barge wherein the bottom plate of the hoppers being the first bottom and the barge bottom plate is the second bottom of the barge, hence one more opening, similar to the material outlet port provided in the material discharging hopper (601), is made in the bottom plate of the barge (500) and act as material exit port which is of same shape and the size as that of the material outlet port.
  • a hinged door type gate (607) is installed at the bottom of the barge (500) to close and seal the material exit port in all respect. One end of the hinged gate (607) is held with the bottom plate of the barge (500) by means of hinges that is welded with the bottom plate of the barge.
  • the gate (607) accommodates a water-sealing gasket (610) secured in the groove of its flange.
  • the gate is fastened with the bottom of the barge (500) by screwing nuts (608) on the stud bolts (609) which are welded / secured with the bottom plate of the barge around the outer periphery of the material exit port.
  • Said material exit port is closed and sealed completely to provide a reliable and safe watertight joint to the bottom opening of the barge (500) so that it can sail in deep waters safely to reach the desired destination.
  • the material outlet port of the material discharging hopper (601) and the material exit port at the bottom of the barge (500) are interconnected by welding an interconnecting duct (603).
  • the interconnecting duct (603) provides passage for granular bulk material during barge emptying operation by isolating the space between the said two ports at the same time it provides the room for accumulating seepage water, if any through the bottom joint.
  • the gate (607) For bolting or unbolting the hinged gate (607) with the bottom plate of the barge (500), the gate (607) is lifted or lowered for engaging or disengaging with the stud bolts (609) by operating the winches (EW-A) and (EW-B) which are mounted on the deck of the barge (500).
  • winches (EW-A) and (EWR-B) One end of the winch cables (EWR-A) and (EWR-B) are tied with the gate (607) from inside and guided by the pulleys (EWP-A) and (EWP-B) which are mounted inside the duct (603) by welding the pulley mounting supports with the plates of the duct (603) from inside.
  • a water level sensor (605) and a water pump (606), which is connected to seepage water suction nozzle (604) is also provided to ensure further safety of the barge.
  • the water level sensor (605) indicates the presence of seepage water in the duct (603), if any. Water accumulated due to seepage through the bottom joint of the gate (607), if any, is pumped out of the duct (603) by the pump (606).
  • Fig. 3 that shows the arrangement of the four guide blocks (503 A, 503B, 503C and 503D), which are integral to the four corners of the barge (500) .
  • the said guide blocks are installed to prevent the lateral movements of the barge occurring during the up ward floating of the barge caused due to floodwater turbulence pumped by the pump (WP).
  • the guide blocks (503A, 503B, 503C and 503D) are released or retracted by operating dedicated operating system installed for the purpose, which can be either pneumatic or hydraulic system.
  • Said vertical slots are provided on the four corners of the sidewalls of buoyancy compartment (1001) having gap between the slots and the slot size is kept suitable to accommodate the guide blocks.
  • Said guide blocks are engaged with said vertical slots during vertically upward and downward floating movements of the barge (500).
  • the guide blocks (503A and 503B) and (503C and 503D) engage with the horizontal slot (1001 AB) and (100 ICD) respectively, which are the common slots on the sidewalls of both the buoyancy compartments (1001 and 1002).
  • the plurality of barge anchors (501) are integral to both the side plates and the bottom plates of the barge (500) as shown in fig 1, 3 and 6, wherein one end of each barge anchor (501) is welded with the side plate of the hoppers (502 and 601) and the other end penetrates and protrudes out from the outer side plate of the barge (500).
  • the penetrating area between each barge anchor and the plate of the barge is sealed and strengthened by welding the anchor and the plate.
  • the barge anchors are evenly distributed on entire body of the barge so that each anchor shares the load of the loaded barge while tilting and anchoring the barge (500) .
  • the protruding lengths of the anchors (501) are such that they are suitable to engage with the plurality of arced slots (1005).
  • pluralities of barge anchors (501), which are at the bottom of the barge, are also welded with the bottom plate of the hoppers (502 and 601) and with the bottom plate of the barge (500) in similar fashion.
  • the barge anchors (501) are of solid steel bars or pipe sections having cross sectional area suitable for the purpose.
  • the buoyancy compartment ( 1001) is constructed on the land connected with the water body (100) in such a way that the base of the buoyancy compartment (1001) and the base of the water body (100) is common to both.
  • the barge access gate (101) is fitted on the opening at the bottom of the front wall of the buoyancy compartment (1001), which faces the water body (100). The entire structure is constructed on the land connected with the water body (100) so that the loaded barge (500) can be floated directly in to buoyancy compartment ( 1001).
  • Second buoyancy compartment (1002) is constructed at an elevation suitable for the barge to get tilted and also to provide suitable room for constructing the material-receiving silo (2000).
  • the cargo can be unloaded directly on the ground below the barge seat (1003) in that case the height of the buoyancy compartment gets reduced.
  • the buoyancy compartment (1002) is supported on sturdy concrete structure suitable to withstand the weight of the floodwater and the weight of the loaded barge (500).
  • Both the buoyancy compartments (1001 and 1002) are interconnected by installing an interconnecting gate (102) at the junction of the two.
  • the basic function of the gate (102) is to retain the floodwater of one compartment while floodwater of other compartment is getting drained.
  • Barge access gate ( 101) and the interconnecting gate (102) are operated by installing motorized gear mechanism or hydraulic operated system.
  • the plurality of arched slots (1005) on both the sidewalls of the barge seat (1003) are meant for accommodating plurality of barge anchors (501) (referrer .fig land fig.3), for guiding the barge (500) during its tilting operation and also for anchoring the barge (500) with the barge seat (1003).
  • These slots are provided with steel liners so that the barge anchors can easily slide during barge tilting operation.
  • the bottom slide gate ( 1004) is also shown which is in closed position ⁇ also refer fig. T).
  • Fig. 5 is the cross sectional view of the barge seat (1003), as claimed in the invention, the top portion of the buoyancy compartment (1002) has rectangular cross section and the lower bottom resembles the impression of the outer shape of the barge (500)
  • the cross section shows the construction of the inner shape of the barge seat (1003) which is the impression of the outer body of the barge (500) created by first lowering the barge and then rotating its front deck end keeping the rear end hinged / anchored with the rear end of the barge seat (1003) to an extent that the barge attains the angle of repose suitable for gravitational sliding of the granular bulk material loaded on the barge (500).
  • the barge seat (1003) helps the barge to get tilted and also acts as a cradle for the barge (500), which holds the barge (500) in tilted position without use of any external means.
  • Fig.6 shows the close view of one arced slot (1005), which are plurality in numbers and are provided in the base of the barge seat (1003), the plurality of barge anchor (501) which are integral to the bottom of the barge (500) get engaged with the respective arced slot (1005) at the bottom of the barge seat (1003).
  • the barge (500) gradually getting tilted which finally comes to rest with all the bottom anchors of the barge (500) engaged with the bottom arced slots of the barge seat (1003) thereby providing firm grip to the barge.
  • Fig. 7 shows the details of the slide gate (1004), which is operated by the winch (EW-3), the gate (1004) moves over a guide rail (1010) integral to the bottom of the barge seat (1003) which keeps the gate very close and parallel with the lower bottom face of the barge seat (1003), so that the bolts (1008) can be screwed or unscrewed easily in to nuts (1007) which are embedded in the slab of the barge seat (1003) at its bottom side around the material dumping port.
  • the water-sealing gasket (1006) is secured within the flange of the gate (1004), which gives a watertight joint when the gate is bolted with the barge seat (1003).
  • the gate is designed in such a way that it is capable of withstanding water head present in buoyancy compartment (1002).
  • the size of the material dumping port is such that it is suitable to allow the hinged gate (607), at the bottom of the barge (500), to hang down and protrude out through it.
  • Ref. fig. 8 which is the basic concept of barge emptying system and the method for unloading the granular bulk material from the barge (500), as claimed in the invention. The concept can be understood better by referring the fig. 8/12 along with all other supporting figures of the invention.
  • the loaded barge (500) (see fig.l) initially floating in the water body (100) in front of the buoyancy compartment (1001) (ref. stage I), the barge access gate (101) is opened to receive the barge (500) into buoyancy compartment (1001) and closed back again so that the barge (500) can be isolated from water body (100).
  • the guide blocks (503A, 503B, 503C and 503D) are released which get engaged with the vertical slots (1001A, 1001B, lOOlC, and 1001D) of buoyancy compartment (1001) respectively so that the lateral movements of the barge (500) due to the floodwater turbulence can be curtailed (refer stage 2).
  • the buoyancy compartments (1001) and (1002) are flooded by operating the water pump (WP) having higher capacity of pumping the water.
  • WP water pump
  • the major time of the unloading operation is consumed by the flooding operation of the compartments (1001 and 1002) hence higher the water discharging capacity of the pump or more number of pumps, lesser the time required to complete the barge emptying operation.
  • Flooding causes the rise in water level in both the compartments (1001 and 1002).
  • the barge (500) keeps floating and rising upwards as the water level in buoyancy compartment (1001) increases (refer stage 3).
  • the water supply to buoyancy compartment (1001) is stopped. Once the water level in buoyancy compartment (1002) matches that with the water level of the buoyancy compartment (1001) and the water level sufficient to receive and float the loaded barge (500), its water supply is also stopped. Now the guide blocks (5O3A and 503B) and guide blocks (503C and 503D) get aligned with the horizontal slots (1001AB) and (lOOlCD) respectively, so that the barge (500) can be guided during its horizontal floating motion from buoyancy compartment (1001) to buoyancy compartment (1002).
  • the interconnecting gate (102) is opened and the winch cables (EWR-I and EWR-2) are hooked to the barge (500), winches (EW- 1 and EW-2) are operated and the barge (500) is pulled in to the buoyancy compartment (1002) (note stage 5, and the fig. 12).
  • the gate (102) is closed again so that floodwater of buoyancy compartment (1001) can be retained while the buoyancy compartment (1002) is getting drained.
  • the plurality of barge anchors (501), integral to the side plates of the barge (500), are aligned with the respective plurality of arched slots (1005) provided on the inner sidewalls of the barge seat (1003), as explained earlier (refer fig.l and 5).
  • the guide blocks (503 A, 503B, 503C and 503D) are retracted back from the slots (1001AB and lOOlCD).
  • the barge (500) can enter the barge seat (1003) with all its plurality of barge anchors (501), integral to its side plates, engaged with the respective plurality of arched slots (1005) on the side walls of the barge seat ( 1003).
  • the rear end of the barge (500) first touches the shallow end of the barge seat (1003) with its bottom anchors at its rear end gradually entering the bottom arced slots of the barge seat (1003) and act as anchoring points for the barge.
  • the inside surface of the barge seat (1003) can be washed with the jet of fresh water to remove the matters settled after draining the buoyancy compartment (1002). Since the lower most part of the barge seat ( 1003) is the material dumping port, the floodwater accumulated in this portion can be drained by providing a separate nozzle connected to the floodwater drain duct (FDD-3) or even a nozzle with a valve welded at the bottom of the slide gate (1004) can also be used for draining this water.
  • FDD-3 floodwater drain duct
  • a valve welded at the bottom of the slide gate (1004) can also be used for draining this water.
  • the slide gate (1004) is unbolted by unscrewing the bolts (1008) from the nuts (1007) and the gate (1004) is released from the bottom of the barge seat (1003), which lands and rests on the guide rails (1010).
  • the gate (1004) is pulled upwards by operating the winch (EW-3) and locked in that position.
  • the material dumping port of the barge seat (1003) is now fully open.
  • the hinged gate (607) is released, by operating the winches (EW-A and EW-B) and releasing the winch cables (EWR-A and EWR-B), which hangs down and protrudes out through the material dumping port.
  • the plate gate (602) is opened by its dedicated operating system to initiate the actual barge emptying activity.
  • the granular bulk material carried by the material-discharging hopper (601) gets discharged through the material outlet port, which passes through the duct (603) and escapes through the material exit port provided at the bottom of the barge (500) and gets dumped in to the material receiving silo (2000) or on the ground below the barge seat (1003).
  • the material- discharging hopper (601 ) When the material- discharging hopper (601 ) is about to get empty the granular bulk carried by the upstream adjacent hopper (502), which is interconnected with the material discharging hopper (601) through the bottom opening between the partition plate (504) and the bottom plate of the hopper, gets discharged into material discharging hopper (601) due to gravity sliding.
  • Granular bulk material slides down towards material discharging hopper (601 ), due to the barge (500) resting in tilted position with angle of tilting equals to angle of repose suitable for gravity sliding of granular bulk material.
  • Granular bulk material enters the material-discharging hopper (601) and gets dumped in to material receiving silo (2000) or on the ground.
  • the granular bulk material received in silo (2000) is further conveyed by using various options of material handling such as open belt conveyor, pipe conveyor, pneumatic conveying system, screw conveyor or transporting by trucks.
  • the hinged gate (607) at the bottom of the empty barge (500) is lifted with the help of winches (EW-A and EW-B) and positioned over the material exit port and bolted with the bottom of the barge (500) by inserting the gate (607) on the stud bolts (609) and screwing the nuts (608).
  • the slide gate (1004) is released from its locked position by operating the winch (EW-3) and positioned over the material dumping port, at the bottom of the barge seat (1003), bolted and secured with the barge seat (1003) by screwing the bolts (1008) in to nuts (1007) which are embedded in the slab of the barge seat (1003) around the periphery of material dumping port.
  • the drain valve (FD V-3) is closed and floodwater- regulating valve (FV-2) is kept open and the buoyancy compartment (1002) is flooded with water by operating the pump (WP). Ref.
  • the bolted joint of the hinged gate (607) is checked thoroughly for water leak, if any, into the duct (603) before closing the plate gate (602).
  • the plate gate (602) can be closed later on just before the fresh loading of the barge (500).
  • the empty barge (500) leaves its tilting position and starts floating upwards, which is guided by the plurality of barge anchors (501).
  • the empty barge (500) attains the horizontal floating position and leaves the barge seat (1003).
  • the guide blocks (503A, 503B, 503C and 503D) are released as soon as they reach the required height and engage with the slots (100 IAB, 100 ICD).
  • the interconnecting gate (102) is opened and the barge (500) is pulled back in to buoyancy compartment (1001) with the help of barge pulling winches.
  • the gate (102) is closed again to retain the floodwater filled in the buoyancy compartment (1002).
  • the guide blocks (503 A, 503B, 503C and 503D) are aligned with the vertical slots (1001A, 1001B, IOOIC and 1001D) respectively.
  • the barge access gate (101) is opened partially and the floodwater from the buoyancy compartment (1001) is allowed to escape in to water body ( 100). As the water level starts decreasing the barge gets lowered gradually guided by the four guide blocks. As soon as the water level of the buoyancy compartment (1001) matches with the water level of the water body (100), the barge access gate (101) is completely opened and the empty barge (500) is released back to water body ( 100) for further cargo loading and transport.
  • each hopper of the plurality of hopper barge or a vessel can have dedicated bottom- discharging arrangements; in that case tilting of the barge is not required.
  • the buoyancy compartment (1002) needs to be modified accordingly.
  • the barge can be directly floated in to this compartment and isolated with help of a gate. Water from the compartment can be pumped out using pump.
  • the contents of the barge can be dumped by tilting, as described in the invention, and dumping through its bottom opening in to an underground facility.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Ship Loading And Unloading (AREA)

Abstract

L'invention concerne un système de vidage de barge et un procédé de déchargement de matière en vrac granulaire d'une barge à double fond (500) présentant une pluralité de trémies reliées entre elles et partiellement recouvertes (502) et au moins une trémie de déchargement de matière (601). Le système est amené à flotter dans un compartiment de flottaison (1001) par fermeture de la porte d'accès de la barge (101), activation de la pompe (WP) et injection d'eau dans le compartiment de flottaison (1001). La barge chargée flotte (500). Puis, le procédé consiste à faire flotter la barge à une hauteur requise dans un autre compartiment de flottaison rempli d'eau (1002), à fermer la porte (102), à drainer ledit compartiment de flottaison (1002) et à abaisser le niveau de la barge (500) de manière à faire rentrer en contact la pluralité d'ancres (501) de la barge avec la pluralité de fentes en arc de cercle (1005) de la zone de mouillage (1003) de la barge, ce qui permet de vider pour faire basculer, immobiliser et ancrer la barge chargée (500) dans la zone de mouillage (1003) de la barge. Le procédé consiste enfin à ouvrir petit à petit une porte coulissante (1004), une porte articulée (607) située au niveau inférieur de la barge et la porte (602) de la trémie de déchargement de matière (601), et à vider les contenus granulaires de la barge (500) dans un silo de réception de matière (2000). L'opération inverse est effectuée et la barge vide (500) est ramenée sur l'eau (100).
PCT/IN2006/000093 2005-03-21 2006-03-14 Systeme de déchargement de barge Ceased WO2006120699A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN301/MUM/2005 2005-03-21
IN301MU2005 2005-03-21

Publications (2)

Publication Number Publication Date
WO2006120699A2 true WO2006120699A2 (fr) 2006-11-16
WO2006120699A3 WO2006120699A3 (fr) 2007-01-04

Family

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Application Number Title Priority Date Filing Date
PCT/IN2006/000093 Ceased WO2006120699A2 (fr) 2005-03-21 2006-03-14 Systeme de déchargement de barge

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WO (1) WO2006120699A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113704965A (zh) * 2021-07-22 2021-11-26 中国海洋大学 浮托安装荷载转移过程动态模拟分析方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3366886D1 (en) * 1983-01-19 1986-11-20 Dredging Int Device for underwater sealing ports or similar, notably the bottom traps from hopper barges
NL8300385A (nl) * 1983-02-02 1984-09-03 Ihc Holland Nv Hoppervaartuig met bodemkleppen en een leegzuigkanaal.
EP0161054A1 (fr) * 1984-04-02 1985-11-13 Drg (Uk) Limited Basculeur ou déchargeur pour barge
JPH03103525A (ja) * 1989-09-18 1991-04-30 Toshikatsu Omachi エアリフト式閘門

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113704965A (zh) * 2021-07-22 2021-11-26 中国海洋大学 浮托安装荷载转移过程动态模拟分析方法
CN113704965B (zh) * 2021-07-22 2024-06-11 中国海洋大学 浮托安装荷载转移过程动态模拟分析方法

Also Published As

Publication number Publication date
WO2006120699A3 (fr) 2007-01-04

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