• 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:
    1490877 Ice cutters SEA-LOG CORP 7 April 1975 [8 April 1974] 14112/75 Heading E1H An ice cutter fitted to a column 20 supporting marine platform 14 comprises a vertical shaft 24 rotatably supported by the column and a plurality of radial cutter arms 26 projecting from the shaft. The cutter arms terminate at their outer ends in cutting edges and at least some of the cutter arms have a top surface 48 inclined at an angle to the horizontal plane of movement of the cutter arms.
    公开号:SU942582A3
    申请号:SU752122477
    申请日:1975-04-07
    公开日:1982-07-07
    发明作者:Франклин Ширтцингер Джозеф
    申请人:Си-Лог Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to shipbuilding, in particular to devices for the destruction of ice and ships operating in ice, mainly for floating drilling platforms. 5
    A device for destroying ice for ships operating in ice, mainly for floating drilling platforms, comprising a shaft located vertically on the support cylinder and connected to the latter, a series of levers radially arranged and attached to the shaft with cutting edges, as well as a shaft rotation drive, kinematically connected with the latter [1]. fifteen
    A disadvantage of the known device is the low productivity of ice cutting.
    Nel inventions - improving the performance of ice cutting device. ' 20
    This goal is achieved by the fact that each lever contains a sickle-shaped plate, while the sickle-shaped plate is inclined to a plane perpendicular to the axis of rotation of the shaft, the geometric line of the lower edge of the sickle-shaped plate is convex upward, the angle of inclination of the upper surface of the sickle-shaped plate to a plane perpendicular to the axis the rotation of the shaft is made in the upper part of the plate larger than in its lower part, and the cutting edges are made on the radial peripheral ends of the crescent plates,
    In order to reduce the sticking or freezing of ice pieces on the device, the shaft contains a sleeve located coaxially with the support cylinder and forming an annular cavity with the latter, while the crescent-shaped plates are attached to the specified sleeve and are provided with a circulation heating system connected by pipelines to the cavity.
    In order to reduce the resistance of the cutting levers in the water and in the section tb ice blocks, the sickle-shaped plates are provided with an elastomeric coating, which is layered on their surfaces.
    S 942582 4
    In FIG. 1 shows the device, plates 10 are made of ice breaking machines mounted on a floating drilling platform, general view ”in FIG. 2 - radrez AA. in FIG. 1J in FIG. 3 - section BB in FIG. 1, in $ FIG. 4 - axonometric projection of the device.
    An ice breaking device for ships operating in ice, mainly having a setting 1 with an upper 'deck 2 and a vertical column 3 located above the water surface, comprises a shaft vertically located on the supporting cylinder 4, a series of cutting arms 5 radially arranged and attached to the is shaft, and also drive 6 shaft rotation, kinematically connected with the latter. The vertical column 3 is connected to, “a submerged base 7, the Base 7 contains a housing, 20 made of bulkheads and external plates and providing significant waterproofing of the base, which can be loaded with ballast to lower the seabed to the drilling position or to ensure sufficient buoyancy necessary to position the base below the surface. semi-submerged water.
    The seabed is drilled from 30 drill deck 2 through the column 3 and base 7 using drilling equipment including a drill rig 8 mounted on the drill upper deck 2. The supporting cylinder 4 is fixed rigidly with its lower end to the base 7. 3S
    Inside the string 3 there is a cylindrical casing 9, through which access to the ocean floor from the drill deck is provided. The casing pipe 9 is shifted 40 relative to the outer support cylinder 4 to provide more working space for people and equipment between, between the drill deck and the underwater base 7.
    Each cutting lever 5 contains a plate 10 having a crescent shape. The crescent plate 1O is inclined to a plane perpendicular to the axis O-O 4 of rotation of the shaft containing the sleeve 11. The sleeve 11 is located on a coaxial support cylinder 4 and covers the latter. The sleeve 11 rotates and is driven from the superstructure 1. Separate crescent plates 10 are attached to the outer surface 55 of the sleeve 11. Crescent plates 10 are located around the periphery of the sleeve 11 along the entire length of the column 3. A high tensile sickle-shaped crescent with a root part 12, which is interfaced with the outer surface 10 of the sleeve 11. The sleeve 11 has a plurality of ribs 13 separated in the axial direction. The root 'part 12 of the crescent plate extends diagonally between two adjacent ribs 13. The opposite ends of the root portion 12 are made with flanges 14 and 15, which are bolted or otherwise attached to two adjacent ribs 13 of the sleeve 11.
    The geometric line of the lower edge 16 of the sickle-shaped plate is convex upward. The angle of inclination of the upper forming surface 8 of the sickle-shaped plate to a plane perpendicular to the axis O-SC of rotation of the shaft is made in the upper part 17 of the plate more than in its lower part 18. Cutting edges 19 levers are made on the radial peripheral ends of the 20 sickle-shaped plates. Each cutting edge 19 has a wedge-shaped shape and is formed by a flat surface.21 made at the peripheral end of the crescent plate. To reduce the sticking or freezing of ice pieces on the device, the sickle plates 10 are equipped with a circulation heating system, connected by an inlet and outlet pipe 22 and 23 with an annular cavity G formed between the inner surface of the sleeve 11 and the outer surface of the cylinder 4. As a working medium, the circulation crescent plate heating systems can use exhaust gas from the engine. The outlet pipe 23 passes through the cylinder 4 at a point located above the level in odes to reduce back pressure on the exhaust system. The exhaust gases of the engine can pass through a heat exchanger (not shown) to heat water, which is pumped through the heat exchanger and fed into the annular cavity G between the sleeve 11 and the cylinder 4. The inlet pipe 22 is connected to the sleeve 11 by means of an annular seal 24.
    To reduce braking when the surfaces of the cutting arms pass through water and ice, the surfaces of the sickle-shaped inserts 10, except for the cutting edges, are coated with an elastomeric material such as rubber (not shown).
    The device operates as follows.
    The sleeve 11 rotates about a vertical axis in the direction shown in FIG. Arrow 4, the cutting edge 19 a crescent plate 10, moving at high speed, crushes and destroys bol- 5 Shiv ice pieces from the surrounding ice layer. Thus, when the crescent plate 10 moves through the water from right to left (Fig. 4), it creates a scooping effect that drives the water up. In “On the result of this, a strong downward pressure is created on the sleeve 11, which, in turn, transfers the downward pressure through its roller bearing support to the base 7, which makes it possible to hold the base more firmly in the place where it rests on the ocean floor. This creates a strong flow of water upwards, which carries with it the cut pieces of ice, throwing pieces of ice onto the ice surface. The overall effect creates a reduction in the interaction between the ice cocks and the 1O rotating sickle plates due to the removal of the ice cocks from the cutting zone. 2 5
    Sticking, or freezing of ice pieces on each other, either on the surface of sickle plates or the supporting sleeve is reduced by means propuokaniya hot working medium through kol- 30 tsevuyu cavity G between the inner surface of the sleeve 11 and the outer surface of the cylinder 4. As shown in Figure . 3, this can be accomplished by passing, for example, engine exhaust into the annular cavity G 35 inside the sleeve 11. The pipe 22 directs the hot exhaust gases through the annular seal 24 into the sleeve 11. The gases are discharged from the annular cavity G inside the sleeve through the pipe 23, coming out of the cylinder 4. Due to the high thermal conductivity, the sickle-shaped plates 10 heat up quickly enough, while the buildup of ice on their surfaces is prevented. The elastomeric coating 45 prevents the buildup of ice on the surfaces of the sickle-shaped plates 10 located at or above the surface of the water and sometimes exposed to cold Arctic air. fifty
    The proposed device has a high performance cutting ice.
    权利要求:
    Claims (3)
    [1]
    FIG. 1 shows a device for breaking ice mounted on a floating drilling platform, view the view of FIG. 2 - raarea AWV in FIG. It in FIG. 3 section & B in FIG. 1, cb of FIG. 4 is an axonometric projection of the device. A device for breaking ice for ships operating in ice, mostly | 1 The main water above the surface is setting 1 with the upper deck 2 and vertical column 3, p. It holds a shaft vertically mounted on the supporting cylinder 4, a series of radially arranged cutting arms 5 fastened to the shaft, and also a shaft drive 6, connected kinematically with the latter. Vertical column 3 CBJ is loaded; Base 7, Base 7 contains a hull made of bulkheads and outer plates and provides significant water tightness of the base, which can be loaded with ballast to lower to the seabed in the drilling position or to provide sufficient buoyancy to position the base below the surface. odes in a waterlogged condition. The seabed is drilled from the drilling deck 2 through the column 3 and the base 7 by drilling equipment, including the drilling tower 8 mounted on the drilling upper deck 2. The supporting cylinder 4 is rigidly attached to the bottom 7 of the bottom of the column 3 there is a cylindrical casing a pipe 9 through which access to the ocean floor from the drilling deck is made. The casing pipe 9 is displaced relative to the outer support cylinder 4 to provide a larger working space for people and equipment between the drilling deck and the submersible base 7. The cutting arm 5 comprises a plate 1O having a crescent shape. The crescent plate 1O is inclined to the plane perpendicular to the axis O.-O.} of rotation of the shaft containing {pressing sleeve 11. The sleeve 11 is located coaxially with the support cylinder 4 and covers the latter. Sleeve 11 is rotated and driven from superstructure 1. Separate sickle plates 10 are attached to the outer surface of sleeve 11. Sickle plates 1O are located around the periphery of sleeve 11 along the entire length of column 3. Sickle. The plates 10 are made of this high-tensile treadmill with the root portion 12, which is mated with the outer surface 10 of the sleeve 11. The sleeve 11 has a plurality of fins 13 that are axially spaced. Root part 12 of the crescent-shaped plate extends diagonally between two adjacent ribs 13. Opposite root 12 are made with flanges 14 and 15 that are bolted or IN61M to two adjacent ribs 13 of sleeve 11. Geometrical line edge 16 of the crescent plate is convex. up. The angle of inclination of the upper generatrix surface S of the crescent plate to the plane perpendicular to the axis of the 0-Ox axis of rotation is made in the upper part of the plate 17 more than in its lower part 18. The cutting edges 19 are made along the radial peripheral ends of the sickle-shaped 2O plates. Each cutting edge 19 is wedge-shaped and formed by a flat surface. 21 formed at the peripheral end of the sickle-shaped plate. To reduce sticking or freezing on the ice pieces device, the sickle-shaped plates 10 are equipped with a cycling system for their heating, which is intermediated by the inlet and outlet ducts 22 and 23 with an annular cavity G formed between the inner surface of the sleeve 11 and the outer surface of the cylinder 4 Exhaust gas from the engine can be used as the working medium of the circulating heating system of sickle plates. The outlet pipe 23 passes through cylinder 4 at a point above the water level to reduce the back pressure on the exhaust system. The engine exhaust gases can flow through a heat exchanger (not shown) to heat the water that is pumped through the heat exchanger and fed into the annular cavity G between the sleeve 11 and the cylinder 4. Input; The conduit 22 is connected to the sleeve 11 by an annular gland 24. To reduce the flow of the cutting levers through the water and ice, the surfaces of the sickle plates 10, except for the cutting edges, are covered with an elastomeric material such as rubber (not shown). The device works as follows. 594 Sleeve 11 rotates around the vertical axis in the direction shown in FIG. 4, with the arrow, the cutting edge 19 of the gray plate 1O, moving at high speed, crushes and removes 6ant seams of ice from the surrounding layer of ice. Thus, when the sickle plastia 1O moves through the water from the right to the left (Fig. 4), it creates a scooping action that drives the water upwards. As a result, a strong action is created. press down onto sleeve 11, which in turn transmits downward pressure through its roller bearing support to base 7, which allows the base to hold more firmly to the base where it rests on the ocean floor. This creates a strong flow of water up to which carries the cut pieces of the fret behind them, cutting the pieces of ice onto the surface of the ice. The overall effect creates a reduction in the interaction between the pieces of the fret and the rotating sickle plates S due to the removal of ice from the cutting zone. The accumulation or freezing of pieces of ice on each other, either on the surface of sickle plates, or on the support sleeve, is reduced by passing a hot working medium through the annular cavity D between the inner surface of sleeve 11 and the outer surface of cylinder 4. As shown in FIG. 3, this can be accomplished by passing, for example, engine exhaust gases, into the annular cavity G inside sleeve 11. Pipeline 22 accumulates hot exhaust gases through annular seal 24 inside sleeve 11. Gases are removed from the annular cavity G inside The bushings through the conduit 23 leaving the CC of the cylinder 4. Due to the high thermal conductivity, the sickle-shaped plates 10 are heated sufficiently quickly, while preventing the buildup of ice on their surfaces. Elastomeric coating prevents the buildup of ice on the surfaces of sickle plates 1O, which are at or above the level of the water surface and sometimes exposed to cold arctic air 2 The proposed device has ni increased ice cutting performance. Claim 1. A device for breaking ice for ships operating in ice, mainly for floating drilling platforms, containing a shaft vertically positioned on a support cylinder and the shaft aligned with the latter, a series of levers with cutting edges attached to the shaft and a shaft rotation drive connected Quinmatically with the latter, characterized in that, in order to increase the productivity of ice cutting, each lever contains a crescent-shaped plate, while the crescent-shaped plate is inclined to: The perpendicular axis of rotation of the shaft, the geometric line of the lower edge of the crescent plate is convex upward, the angle of inclination of the upper surface of the crescent plate to the plate, perpendicular to the axis of rotation of the shaft, is larger in the upper part of the borehole than its lower part, and the cutting edges are made along the radial peripheral ends of sickle plates.
    [2]
    2. The device according to claim 1, characterized in that, in order to reduce sticking; or pieces of ice frozen on it, the shaft contains a sleeve located coaxially with the supporting cylinder, and forming an annular cavity with the latter, while the sickle-shaped plates are equipped with the said sleeve and are equipped with a pipe through the cavity.
    [3]
    3. Device pop. 1, distinguished by the fact that, in order to reduce the resistance of the cutting levers in the water, and in the cut pieces of ice, the lines are visible. The plates are provided with an elastomeric coating located on their surface. Sources of information taken in the review during the examination 1. US patent K 3696624, cl. 61-46, 10.1O.72 (prototype)
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    同族专利:
    公开号 | 公开日
    JPS50141103A|1975-11-13|
    NO141982B|1980-03-03|
    US3921560A|1975-11-25|
    NO141982C|1980-06-11|
    NO751192L|1975-10-09|
    DK148375A|1975-10-09|
    DE2514974A1|1976-02-26|
    SE7503957L|1975-10-09|
    CA1021581A|1977-11-29|
    GB1490877A|1977-11-02|
    SE8106168L|1981-10-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2533376C1|2013-07-10|2014-11-20|Федеральное государственное унитарное предприятие "Крыловский государственный научный центр"|Self-moving drilling ship for operation in arctic conditions|US3148917A|1961-05-10|1964-09-15|Western Gear Corp|Ice grader having vertical rotary cutters|
    US3521592A|1968-05-13|1970-07-21|Michael W Rosner|Ice channel cutter|
    US3630037A|1970-07-15|1971-12-28|Amoco Prod Co|Arctic piles|
    US3717115A|1971-02-08|1973-02-20|J Abendroth|Ice-channel cutting attachment for ships|
    US3768428A|1971-11-24|1973-10-30|Air Logistics Corp|Sweep ice cutter|
    US3759046A|1972-03-23|1973-09-18|Global Marine Inc|Movement of marine structures in saline ice|JPS6147756B2|1977-12-19|1986-10-21|Ekuson Purodakushon Risaachi Co|
    JPS5364901A|1976-11-24|1978-06-09|Mitsui Shipbuilding Eng|Ice crusher for structure used in icy waters|
    US4102288A|1977-02-28|1978-07-25|Sun Oil Company Limited|Operations vessel for ice covered seas|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US459028A|US3921560A|1974-04-08|1974-04-08|Ice cutting apparatus for vessels operating in ice covered waters|
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