• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Mobile lock apparatus for guiding a pump unit of a drive motor with associated lines for motive power (drive power) and pump with associated hose for pumping medium gas-tightly and pressure-tightly downwards in a fluid tank via a port in the tank at a pressure which differs from atmospheric pressure. The lock apparatus comprises a support member with corresponding seal for sealing against the tank and further comprises a hoisting winch for guiding the pump unit downwards and submerging it in the tank fluid. The lock apparatus is provided with members for effecting a balanced pressure between the lock apparatus and the tank and a balanced sealing pressure in the seal between the lock apparatus and the tank. <IMAGE>
    公开号:NL9800012A
    申请号:NL9800012
    申请日:1998-12-10
    公开日:1999-05-03
    发明作者:Magne Olav Berge
    申请人:Framo Dev As；
    IPC主号:
    专利说明:

    Title: Mobile sluice device for guiding a pump set gastight and pressure-tight down into a liquid tank.
    The invention relates to a mobile sluice device for guiding a pump set of a drive motor with associated lines for driving energy and a pump with associated hose for pumping medium, through a hatch opening in the tank with a pressure which is gas-tight and pressure-tight down into a liquid tank. differs from atmospheric pressure, the sluice device comprising a support member with associated seal for sealing against the tank, and a lifting winch for guiding the pump set down and immersing it in the tank fluid.
    Such a sluice device is known from Swedish patent specification 8405461. This refers to a pump set in combination with a mobile sluice device.
    The purpose of this is to introduce the pump set into the load in a pressure and gastight, precisely controlled manner.
    It is hereby proposed to suspend the pump set in a hoisting winch which is arranged outside the sluice device. The pump set is suspended in a lifting cable, which runs from the winch through the walls of the pump set. Expensive facilities such as seals, however, are required to pass the hoses for the propulsion energy medium and the lifting cable of the pump through these walls, from atmospheric pressure outside the sluice device to a non-atmospheric pressure inside the sluice device.
    The object of the invention is now to ensure a controlled downward movement of the pump set in the tank fluid, without a significant change in pressure in the tank, and without causing significant additional leakage of tank fluid.
    To this end, the mobile lock device according to the invention is characterized in that the lock device is provided with means for establishing a balanced pressure between the lock device and the tank and a balanced closing pressure in the closure between the lock device and the tank.
    In this way one can quickly ensure a simple inclusion of the pump set in the tank with an effective seal against gas and pressure in an easily controllable manner.
    Advantageously, according to the invention, the mobile pump set is now used in combination with the mobile sluice device, whereby the pump set can be introduced into the load in a precisely controlled manner sealed against pressure and gas. In most cases, the tank in question has a pressure that deviates from atmospheric pressure. In other words, the tank will normally have a certain overpressure, in particular to prevent air from entering the tank space, by pressurizing neutral gas in the tank with a certain overpressure (a total pressure of about 1, 15 bar). However, in certain cases, for example in connection with the leakage of tank fluid from a ship's tank through holes on the bottom or the bottom side parts of the tank, for example as a result of grounding, there may suddenly be reduced pressure in the tank. According to the invention, the pump set can be guided down into the fluid of the tank without substantially affecting the pressure prevailing in the tank. In particular, one is able to guide the pump set down into the tank in a situation where a considerably reduced pressure occurs, which is caused by leakage in the tank and in particular a sudden leakage. When the pump set is lowered into the remaining tank fluid, it is possible to transfer the tank fluid from the damaged tank to, for example, an available ballast tank, without risking additional leakage of the tank fluid. If necessary, such amounts of the tank fluid can be transferred from the damaged tank that a water plug is formed in the tank, which not only prevents additional leakage of tank fluid, but also allows the tank fluid to stabilize in the tank by supplying additional quantities of neutral gas in such a way that undesired evaporation or degassing from the tank fluid can be prevented for some time.
    The invention can be applied in connection with ship tanks, which are pressurized with a layer of neutral gas above the tank fluid, and which are subjected to a reduced pressure due to leakage during grounding or other damage to the tank of the tank fluid. When tank fluid is referred to herein, one thinks in particular of an oil load, but other loads may also be important, without concrete examples of such loads being disclosed herein.
    When referring to tanks, as mentioned, this applies in particular to ship tanks, but other tanks, such as tanks on land, may also be of interest.
    On board modern tankers it is customary to use pump sets consisting of loading and unloading pumps with associated drive motor and the like, which are permanently immersed in the cargo and which have the inlet of the pump at the lowest level of the ship's tank (the receptacle) have applied. In certain cases, when grounding or any other damage to the cargo tank, such permanently submerged pumps may of course be used in conjunction with pumping cargo from the damaged cargo tank to a ballast tank or other suitable location. In most cases of grounding, however, it will be of little practical use to transfer the cargo from the cargo tank to the ballast tank with such a permanently submerged pump, since the emptying of cargo in the event of a leakage after grounding, normally will occur quite suddenly with a certain amount of leakage, after which the level of the charge will be stabilized and become balanced against external water pressure, and thereby will be kept more or less stable at one and the same level. When parts of the residual cargo are gradually pumped out of the damaged cargo tank, this will entail a significant corresponding amount of water entering the tank, and such amounts of water will then be quickly collected at the deepest part of the ship's tank. The result will then be that by using pump aggregates permanently submerged at the bottom of the tank, water is pumped to the ballast tank instead of the remaining cargo.
    Mobile pump sets can be used in a crisis situation in place of, or in addition to, possible permanently submerged pumps.
    In connection with damage that occurs to the tank, the solution according to the invention will prevent an unnecessary prevention of unnecessary leakage of tank fluid from the tank, at the same time preventing the entry of air into the tank, and in all cases the penetration of air in the tank is limited during the introduction of the drive motor and pump unit into the tank.
    The invention will now be explained in more detail below with reference to the drawings and the description.
    Fig. 1 shows a lock device according to the invention in a raised transport position, for horizontal transport of a lock device on a foundation, shown in a first embodiment of the lock device.
    Fig. 2 depicts the lock device of FIG. 1 in a lowered position of use, prepared for use, along with a hatch opening; and FIG. 3 shows the lock device of FIG. 1 after the hatch cover has been removed from the hatch opening.
    Fig. 1 shows a foundation 10, such as a ship's deck of a tanker 11 (see also Fig. 4), which forms a driving floor for wheels 13 (of which only two wheels are shown herein), belonging to a wagon lock device 12, i.e. four wheels 13, which are arranged at suitable spacings along the periphery of the lock device 12. Each wheel 13 is supported in a wheel fork 14, which is rotatably mounted in a screw spindle 15. The screw spindle 15 is provided with an external screw thread, which cooperates with an internal screw thread in a vertical support sleeve 16, which is attached to the lock device 12, via a console 17, which projects laterally therefrom. At the upper end of the screw spindle 15, a hand crank 15a is shown for adjusting the level of the wheel 13 relative to the lock device 12. In Fig. 1, the wheels 13 are shown in the furthest extended position of the wheels, for transporting the sluice device 12 over the foundation 10, in a correspondingly raised position. In Fig. 2, the wheels are shown in a retracted position and raised to a level just above the foundation 10, the sluice device 12 itself forming a bearing stop directly against the foundation 10, via a seal 18, attached to a support flange 19, at the bottom edge of the lock device 12, the weight of the lock device 12 resting on the foundation via the seal 18.
    The sluice device 12 is shown in the form of a bell-shaped housing element, the cavity 12a of which is sealed against the air from the atmosphere, by means of the seal 18 between the sluice device 12 and the foundation 10. In a stored condition, the cavity of the sluice device 12 is closed against the foundation, preferably with the sluice device 12 received in a container 11a (see figure 4) on the deck of the ship, the sluice device 12 being closed against the bottom of the container.
    In the illustrated embodiment, the lock device 12 is provided with a cylindrical sleeve-shaped vertical wall 20 and a corresponding circular flat and horizontal top 21, and also an open bottom 22 radially within the support flange 19. Against the top 21 of the sluice device 12 is secured, on the inside of the sluice device 12, a hoisting winch 23 with an operating arm 23a and with two cable drums 24, both with their respective hoisting wire 25 (only one drum and one hoisting cable are shown herein). The hoisting ropes 25 are attached on their respective sides of a pump set 26 to their respective fasteners 26a on the pump set. The pump set 26 comprises, in a manner known per se, a pump which is connected (in a manner not further shown), via a short drive shaft, with a hydraulic drive motor (not shown further). The inlet 27 of the pump at the bottom end of the unit is surrounded by an annular screen 28. An outlet from the pump is shown at the top end of the unit, where the unit is flanged at the top 29 connected to a lower end 30a of a drain hose 30 of the pump. The top end 30b of the hoses 30 is connected at the top to the top 21 of the lock device 12, via a flange 31, which on the outside of the lock device 12 forms a coupling means for coupling to a separate (not shown) pump housing, which can connect the hoses 30 to a remote delivery station, for example a ballast tank. In the illustrated example, a simple connecting flange 31 is shown, but if desired, a quick coupling element (not shown) can be used instead. The drawing schematically shows a manually operated (optionally controlled remotely) shut-off valve 31a for separately, intermittently closing the upper end 30b of the hoses 30. Between the ends 30a and 30b, the hoses 30 are shown collapsed, on a space-efficient, but ready to bring out the hoses 30 at the same time as the pump set is discharged through the hoisting cables 25. From the drive motor at the top end of the pump set, a set of hydraulic oil lines 32 33 (one of which is placed inside the other) extends upwardly in a spiral winding 34, to an upper attachment 34a in the top 21 of the lock device 12. In Figures 1-3, schematically, on the outside of the sluice device 12, a quick coupling device 35 for the oil pressure pipe 32 and a quick coupling device 36 for the return oil pipe 33, for coupling a respective external oil pressure line and a return oil line (not shown further), connected to an associated propulsion unit in a container, placed at a suitable location on the deck of the ship.
    In the side wall 20 of the lock device 12, a window 37 (see FIG. 2) is shown for inspection of the contents of the lock device 12. At suitable, spaced locations along the periphery of the lock device 12 (shown herein at two diametrically opposed sides within the lock device 12), a lifting device in the form of a lifting wire 38 is shown, which runs over a fixedly fixed guide block 39, which is fixed against the inside of the lock device 12. One end of the hoisting wire 38 is attached, by means of a fastening hook 40 (see fig. 2), to a fastening eye 41 on the periphery of a cover 42 of a hatch, which seals a hatch opening 42a, which, by means of fastening pins and associated locking nuts ( in a manner not shown) is attached to a mounting flange 43 on the top 44 of a tank 45. The other end of the lifting wire 3 8 is passed through a wall 46 of the lock device 12 through a guide 46 sealed against gas and pressure and ends in a section 47 with a handle. The hatch cover 42 is shown in a closed position in Fig. 2 and in an open position in Fig. 3. By appropriately pulling or releasing the lifting wires 38, while simultaneously observing through the window 37, it is possible to maneuver the hatch cover relatively easily from the closed to the open position.
    The lid 42 of the hatch is provided in the middle (or alternatively on an edge portion thereof) with a shut-off valve 48 with a conventional handwheel 49. Fig. 2 shows an operating rod 50, which can pass through the wall 20 at its end. are guided, through a pressure and gas sealing guide 51, to engage with the wheel 49, to open the valve 48 to equalize the internal pressure of the chamber in the lock device 12 relative to the cavity in the tank. On the outside of the lock device 12, the bar 50 is provided with a handle 53, and at the opposite end, the bar 50 is provided with a fork portion 54 suitable for engagement with the wheel 49 for spinning of the latter, by means of the rod 50.
    权利要求:
    Claims (6)
    [1]
    1. Mobile sluice device for gas-tight and pressure-tight guiding down into a liquid tank of a pump set of a drive motor with associated lines for propulsion energy and pump with associated hose for pumping medium, via a hatch opening in the tank with a pressure different from atmospheric pressure, the sluice device comprising a supporting member with associated seal for sealing against the tank, and a hoisting winch for guiding the pump set downwards and immersing it in the tank fluid, characterized in that the sluice device (12) is provided with means ( 50, 51, 53, 54) to create a balanced pressure between the lock device (12) and the tank (45) and a balanced seal pressure in the seal between the lock device (12) and the tank (45).
    [2]
    Locking device according to claim 1, characterized in that the members (50, 51, 53, 54) engage a pressure-regulating shut-off valve (48) mounted on a hatch cover (42) of the tank (45).
    [3]
    Lock device according to claim 2, characterized in that the members (50, 51, 53, 54) comprise: an operating rod (50) which is guided at its end through the wall (20) of the lock device (12) with a pressure and gas sealing guide (51) and engages with a wheel (49) to open the shut-off valve (48) to equalize the internal pressure in the sluice device (12) relative to the cavity in the tank (45 ).
    [4]
    Lock device according to claim 3, characterized in that on the outside of the lock device (12) the operating rod (50) is provided with a handle (53) and at its opposite end is provided with a fork part (54) which engages with the wheel (49) for turning it.
    [5]
    Locking device according to any one of claims 2-4, characterized in that the shut-off valve (48) is arranged in the center of the hatch cover (42).
    [6]
    Locking device according to any one of claims 2-4, characterized in that the shut-off valve (48) is arranged on an edge part of the hatch cover (42).
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    同族专利:
    公开号 | 公开日
    NL194369C|2002-02-04|
    NL194369B|2001-10-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2011159145A2|2010-06-18|2011-12-22|Cyclo Dynamics B.V.|A method of converting thermal energy into mechanical energy, and an apparatus|
    法律状态:
    1999-05-03| A1A| A request for search or an international-type search has been filed|
    1999-06-01| BB| A search report has been drawn up|
    1999-12-01| BC| A request for examination has been filed|
    2011-07-06| V4| Lapsed because of reaching the maximum lifetime of a patent|Effective date: 20110628 |
    优先权:
    申请号 | 申请日 | 专利标题
    NO902959A|NO171720C|1990-07-03|1990-07-03|PROCEDURE AND SYSTEM FOR DEFINING AND UNDUCTING A PUMP UNIT INTO A TANK FLUID IN A TANK AND SUPPLY ORGANIZATION FOR THE UNIT|
    NO902959|1990-07-03|
    NL9120018|1991-06-28|
    NL9120018A|NL193243C|1990-07-03|1991-06-28|Mobile sluice device for guiding a pump set gastight and pressure-tight down into a liquid tank.|
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