JP5788570B2 - Ship ice-breaking device - Google Patents

Description

  The present invention relates to a ship navigation de-icing device that is attached to a ship and configured to be able to navigate while melting ice from the sea, lake, or river.

  As trade between nations expands and transportation demand increases, interest in cheap logistics costs is growing. When freighters are transported from countries located in the northeastern part of Asia where cargo production is relatively high to countries located on the other side of the continent or in European countries, the traditional routes are Hong Kong and Singapore on the south side of the continent. It was intended to bypass Africa via. On the other hand, when using the Arctic Ocean, it is known that the operation distance is reduced by about 40% and the operation time is reduced by about 10 days compared to the existing route. Such shortening of the mileage leads to enormous logistics cost reduction and fuel energy required for the engine.

  An icebreaker is a ship specially developed for navigating ice-covered waters, breaking the ice and opening the route. When sailing with such an icebreaker, the average speed of a typical icebreaker is about 2.5 knots, about 20% of the average speed of a large merchant ship operating in ice-free general waters. is there. As a result, despite the shortening of the distance, the economy is inferior due to the rapid increase in operation time.

  Therefore, the key to developing an economical Arctic route is how to remove ice easily and at low cost.

  Patent Document 1 for overcoming the drawbacks of icebreakers discloses that a heating member through which high-pressure steam flows is provided at the bow of the ship.

Korean Published Patent No. 10-2012-53292

  However, in the steam method, in order to withstand high pressure, the configuration of various pipes and valves becomes complicated, which not only increases costs, but also takes a long time to melt ice because of its small heat capacity. There was a drawback.

  The present invention has been made to solve such drawbacks, and provides an apparatus capable of removing ice at low cost and high efficiency by simply attaching it to a navigating ship instead of using an icebreaker. The purpose is to do.

  Another object of the present invention is to provide a ship navigation ice-breaking device which is configured not to break ice but to quickly perform ice-breaking by instantaneous contact using a heat medium oil having a large heat capacity. It is in.

  In order to solve the above problems, the present invention is heated by a boiler for heating a heat medium, a high-temperature pump formed so as to pump the heated heat medium, and a heat medium transferred by the high-temperature pump. A heating cover unit configured to be mounted on the bow of a ship, and a hot air jet disposed in front of the heating cover unit and configured to inject air heated by a heat medium A ship navigation ice-breaking device including a unit is provided.

  As an example of the present invention, the high-temperature pump may include a motor unit and an impeller unit that pumps the heat medium by the motor unit, and the heat medium may be configured to circulate inside the motor unit.

  As an example of the present invention, the heating cover unit may be formed in the form of a wing-shaped metal pad having a shape corresponding to the left and right sides of the bow, and the heating cover unit is for heat exchange with the heat medium. A first heat exchanging unit provided inside may be included.

  As an example of the present invention, the marine vessel de-icing device may further include a heat insulating pad provided at a portion of the heating cover unit in contact with the bow and configured to block the heat of the heating cover unit.

  As an example of the present invention, the marine vessel de-icing device may further include an extension frame extending from the bow to the hot air jet unit so as to support the hot air jet unit.

  As an example of the present invention, the extension frame may include a buffer portion formed to buffer the hot air jet unit.

  As an example of the present invention, the hot air jet unit may be arranged in a direction crossing the traveling direction of the ship.

  As an example of the present invention, a hot air jet unit is formed so as to inject air at high speed, a compressor for pumping air, a second heat exchange unit formed to heat the air with a heat medium, and the heated air. A plurality of nozzles may be included.

  As an example of the present invention, a ship navigation ice-breaking device is formed in the form of a blade disposed vertically in front of a heating cover unit and is heated by a heat medium so as to melt ice. A ting knife unit may be further included.

  As an example of the present invention, the heating knife unit may include a third heat exchange unit for exchanging heat with the heat medium.

  As an example of the present invention, the ship navigation ice-breaking device may further include a position control unit for adjusting the inclination and depth of the heating knife unit.

  As an example of the present invention, the heat medium may be an oil medium capable of carrying heat at a temperature of 250 to 450 ° C.

  Further, the present invention is configured to be heated by a boiler for heating the heat medium, a high-temperature pump formed so as to pump the heated heat medium, and a heat medium transferred by the high-temperature pump, Formed in the form of a heating cover unit that can be mounted on the bow of a ship and a blade that is vertically arranged in front of the heating cover unit, and is formed by heating with a heat medium to melt ice A ship navigation ice-breaking device is provided.

  Further, the present invention is configured to be heated by a boiler for heating the heat medium, a high-temperature pump formed to pump the heated heat medium, and the heat medium transferred by the high-temperature pump, A heat medium formed in the form of a hot air jet unit arranged in front of the bow of the ship and configured to inject air heated by a heat medium, and a blade arranged vertically in front of the hot air jet unit And a heating knife unit formed so as to melt ice by being heated by the above-described method.

  According to the ship navigation ice-breaking device according to the present invention, ice is melted by using a high-temperature pump that circulates a heat medium having a large heat capacity instead of breaking ice, so that quick ice-breaking is possible. Therefore, it is not necessary to use a thick steel plate for the collision and crushing, so that the cost is relatively low and a highly efficient apparatus can be configured. As a result, it is possible to reduce the enormous amount of energy required to bypass the sea area with ice.

  According to one example of a ship navigation ice-breaking device according to the present invention, by applying a canned motor type having a structure in which a heat medium circulates to a high-temperature pump, it is possible to maintain a seal even when there is vibration or in a high-temperature environment. Therefore, stable performance can be exhibited even in extreme environments.

It is a perspective view which shows notionally the state under ice-breaking by the ship by which the ship navigation ice-breaking apparatus by this invention was installed. It is a cross-sectional view which shows notionally the state in the process of ice-breaking by the ship by which the ice-melting apparatus for ship navigation by this invention was installed. It is a block diagram of the ship navigation ice-breaking apparatus by this invention. It is a partial plane sectional view for showing the wearing state of the heating cover unit by the present invention. 1 is a schematic plan sectional view of a hot air jet unit according to the present invention. It is sectional drawing of the high temperature pump by an example of this invention.

  Hereinafter, a ship navigation ice-breaking device according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a perspective view conceptually showing a state in which ice is being melted by a ship in which a ship navigation deicing apparatus according to the present invention is installed, and FIG. 2 is a ship in which a ship navigation deicing apparatus according to the present invention is installed. FIG. 3 is a cross-sectional view conceptually showing a state during ice melting, FIG. 3 is a configuration diagram of a ship navigation ice-breaking device according to the present invention, and FIG. 4 shows a mounting state of a heating cover unit according to the present invention. FIG. 5 is a schematic plan sectional view of a hot air jet unit according to the present invention.

  As shown in the figure, the ship navigation ice-breaking device 100 according to the present invention can be attached to and detached from the bow of the ship S, and is installed in a sea area with ice and separated in a general sea area without ice.

  The ship navigation ice-breaking device 100 includes a heating cover unit 110, a hot-air jet unit 120, and a heating knife unit 130. These heating units are connected to a boiler 150 and a high-temperature pump 160 installed in the ship S. Has been. However, the ship navigation ice-breaking device 100 is not configured to include all of the heating cover unit 110, the hot air jet unit 120, and the heating knife unit 130, but is configured by any one or a combination of the two. May be.

  The boiler 150 is configured to heat the heat medium. As the heat medium, a mineral oil system capable of carrying heat at a temperature of 250 to 450 ° C. can be used, and a sufficient heat capacity for de-icing is supplied while maintaining a liquid phase even at a high temperature.

  The heat medium heated by the boiler 150 is supplied to the high temperature pump 160 via the first valve 171. The high-temperature pump 160 is a component for circulating a high-temperature heat medium, and is required to maintain insulation and exhibit a high pressure without leakage even at a high temperature. Details of the high-temperature pump 160 will be described later with reference to FIG.

  The heating cover unit 110 is configured to be heated by the heat medium transferred by the high-temperature pump 160 and is configured to be attached to the bow of the ship S. Specifically, as shown in FIG. 4, the heating cover unit 110 may be formed in the form of a wing-shaped metal pad having a shape corresponding to the left and right sides of the bow. The heating cover unit 110 may include a first heat exchange unit 112 for exchanging heat with the heat medium. The first heat exchange unit 112 may be configured in the form of a plurality of tubes or a plurality of layers suitable for heat exchange. Further, a heat insulating pad 115 may be provided at a portion of the heating cover unit 110 that contacts the bow. The heat insulating pad 115 is configured to prevent heat degeneration and fatigue from occurring at the bow portion by the high temperature heating cover unit 110 heated to about 250 ° C. through heat exchange with a heat medium at 250 to 450 ° C. . As such a heat insulating pad 115, an elastic resin, rubber, or spring material may be used so that an impact caused by the collision with the ice C can be reduced.

  The hot air jet unit 120 is disposed in front of the heating cover unit 110 and is configured to inject air heated by a heat medium. The ship sailing ice melting apparatus 100 may further include an extension frame 141 extending from the bow of the ship S to the hot air jet unit 120 so as to support the hot air jet unit 120. The extension frame 141 may be provided with a buffer portion 142 so that the resistance and impact force applied to the hot air jet unit 120 and the heating knife unit 130 due to the collision with the ice C can be reduced. The buffer 142 may be configured by an elastic spring, a working fluid cylinder, or the like.

  The hot air jet unit 120 is arranged in a direction intersecting with the traveling direction of the ship S (see FIG. 1), and a second heat exchange unit 122 formed to heat the air with a heat medium is provided therein. Also good. The hot air jet unit 120 includes a compressor 125 (see FIG. 3) for supplying compressed air, and a plurality of hot air jet units 120 provided on the lower surface of the hot air jet unit 120 so that the air heated toward ice can be injected at high speed. A nozzle 121 (see FIG. 5) may be included.

  The heating knife unit 130 is formed in the form of a blade arranged vertically in front of the heating cover unit 110, and is heated by a heat medium so as to melt about 5 to 7 m of ice. Inside the heating knife unit 130, a third heat exchange unit 132 for exchanging heat with the heat medium may be provided. In addition, a position control unit 135 for adjusting the inclination and depth of the heating knife unit 130 according to the thickness and depth of ice is provided between the hot air jet unit 120 and the heating knife unit 130. Also good. For such a position control unit 135, a hydraulic motor, a mechanical link mechanism, or the like can be used.

  The ship S may be provided with a crane 101 and a cable 102 for supporting or detaching the ship navigation ice-breaking device 100.

  Hereinafter, an operation of the ship navigation ice-breaking device 100 will be described.

  As shown in FIG. 1, when the ship S sails in the sea area where the ice C exists, first, the heating knife unit 130 located at the tip of the ship S is about 100% by the heat medium heated to a high temperature (250 to 450 ° C.). Heat to 250 ° C. The heating knife unit 130 formed in the form of a blade comes into contact with the ice C on both sides, and supplies a large amount of heat to the ice C in a short moment to rapidly heat it to 0 ° C., which is the melting temperature of the ice C. . As a result, the spreading ice layer breaks.

  The hot air jet unit 120 jets high-temperature air heated to about 250 ° C. by a heat medium onto the ice C at a high speed. As a result, the ice C is small and easily broken.

  The heating cover unit 110 helps to ensure that the ice melted by the front heating knife unit 130 or the hot air jet unit 120 is completely melted. However, any combination of the heating cover unit 110, the hot air jet unit 120, and the heating knife unit 130 may be omitted. Further, as shown in FIG. 3, the second valve 172 for opening and closing the heat medium supplied to the heating cover unit 110 and the heat medium supplied to the hot air jet unit 120 or the heating knife unit 130 are opened and closed. The third valve 173 may selectively use a heating means for defrosting.

  FIG. 6 is a cross-sectional view of a high temperature pump according to an example of the present invention. The high-temperature pump 160 of this example is a high heat-resistant pump that can withstand high temperatures, and a non-seal canned motor pump that does not leak even in an extreme environment can be applied. That is, the high temperature pump 160 may include a motor unit and an impeller unit, and is configured such that the heat medium circulates inside the motor unit. Hereinafter, the high temperature pump 160 will be described more specifically.

  The high-temperature pump 160 includes a casing 160-10, an impeller 160-15, a front housing 160-21, a rear housing 160-22, a stator unit 160-30, a rotor assembly 160-40, bearings 160-51, 160-52, and a sleeve 160. Components such as -53, 160-54, auxiliary impeller 160-60, and connectors 160-70 may be included. In some cases, such a high-temperature pump 160 may not include some of these components, or may be replaced with other forms.

  The casing 160-10 covers the impeller 160-15, and the working fluid, that is, the inflow portion 160-11 into which the liquid heat medium or the like flows in, and the inflowing working fluid is discharged by the centrifugal force of the impeller 160-15. Each of the discharge portions 160-12 is formed.

  The impeller 160-15 is a component coupled to the rotor assembly 160-40, and operates by forcibly guiding the working fluid in the centrifugal direction by rotating by a driving force supplied from the rotor assembly 160-40. The fluid is directed toward the discharge part 160-12 of the casing 160-10.

  The front housing 160-21 and the rear housing 160-22 are each configured to extend inward so as to provide a mounting seat for the bearings 160-51 and 160-52. In order to mount the front housing 160-21 and the rear housing 160-22, the stator unit 160-30 is provided with flanges 160-31 and 160-32, respectively. Of these, the front flange 160-31 may be formed to have a larger diameter than the rear flange 160-32 in order to be directly attached to the casing 160-10. The front flange 160-31 and the casing 160-10 are coupled by a flange bolt 160-35 inserted from the front flange 160-31 side. Due to the direct coupling structure of the stator unit 160-30 and the casing 160-10, a high sealing force can be obtained, and the assembly can be facilitated. The front housing 160-21 is attached to the front flange 160-31 of the stator unit 160-30 by a flange bolt 160-25 inserted from the front housing 160-21 side.

  The rotor assembly 160-40 includes a shaft 160-41, a rotor core 160-42 fixed to the shaft 160-41, and a rotor can 160-43 that seals the rotor core 160-42.

  A through hole 160-41a is formed in the longitudinal direction at the center of the shaft 160-41, and a side hole 160-41b communicates with the through hole 160-41a in the radial direction. When the motor is operated, the working fluid flows into the through hole 160-41a by the action of the impeller 160-15 and flows into the internal space of the motor from the side hole 160-41b.

  Sleeves 160-53 and 160-54 are respectively inserted into the front end and the rear end of the rotor assembly 160-40, and the sleeves 160-53 and 160-54 are supported by respective bearings 160-51 and 160-52. Has been. The bearings 160-51 and 160-52 are formed with a labyrinth 160-51a in the spiral direction and the axial direction, and the shaft 160-41 and the bearings 160-51 and 160-52 by the working fluid flowing in the labyrinth 160-51a. Smooth sliding. That is, a lubricating action is realized by a heat medium that is a working fluid sent by a pump without using a separate lubricating oil. Therefore, since a seal ring or the like is not used, the heat medium does not leak due to the seal breakage during the operation of the high-temperature pump 160.

  The stator unit 160-30 is formed by winding an electric wire around an iron core 160-33, and is sealed by a stator can 160-34. As described above, the front and rear ends of the stator unit 160-30 are provided with flanges 160-31 and 160-32 for coupling to the front housing 160-21 and the rear housing 160-22, respectively. .

  The auxiliary impeller 160-60 provides a passage for the outflow of air contained in the interior space in which the rotor assembly 160-40 is mounted. That is, when the device is operated, air is discharged through the auxiliary impeller 160-60 so that the working fluid flows into the internal space by the rotation of the impeller 160-15, and when all the air is discharged, the auxiliary impeller 160-60 is closed. To do.

  The connector 160-70 is a portion for connecting the electric wire or the like of the stator unit 160-30 to an external terminal, and is separated from the high-temperature stator unit 160-30 by a predetermined distance by an extension tube.

  In this way, the high-temperature pump 160 of the non-seal canned motor pump type realizes the cooling action and the lubricating action of the motor part of the high-temperature pump 160 by flowing the heat medium into the inside and circulating it, and the internal parts of the motor part. Therefore, the seal is not damaged and high durability can be exhibited.

  The ship navigation ice-breaking device according to the present invention is not limited to the configuration and method of the above-described embodiment, and can be variously modified by selectively combining all or part of each embodiment. it can.

S ship W water C ice 100 ship sailing ice melting device 101 crane 102 cable 110 heating cover unit 112 first heat exchange unit 115 heat insulation pad 120 hot air jet unit 121 nozzle 122 second heat exchange unit 125 compressor 130 heating knife unit 132 3rd heat exchange part 135 Position control part 141 Extension frame 142 Buffer part 150 Boiler 160 High temperature pump 170 High temperature piping 171 1st valve 172 2nd valve 173 3rd valve

Claims (14)

A boiler for heating the heat medium;
A high temperature pump configured to pump the heated heating medium;
A heating cover unit configured to be heated by a heat medium transferred by the high-temperature pump and configured to be mounted on a bow of a ship;
A ship navigation ice-breaking device including a hot air jet unit disposed in front of the heating cover unit and configured to inject air heated by the heat medium. The high temperature pump includes a motor unit and an impeller unit that pumps the heat medium by the motor unit,
The ship navigation ice-breaking device according to claim 1, wherein the heat medium is configured to circulate inside the motor unit. The heating cover unit is formed in the form of a wing-shaped metal pad having a shape corresponding to the left and right sides of the bow,
2. The ship navigation ice-breaking device according to claim 1, wherein the heating cover unit includes a first heat exchange unit provided therein for heat exchange with the heat medium.   The ship navigation ice-breaking device according to claim 3, further comprising a heat-insulating pad provided at a contact portion of the heating cover unit with the bow and configured to block heat of the heating cover unit.   The ship navigation ice-breaking device according to claim 1, further comprising an extension frame extending from the bow to the hot-air jet unit so as to support the hot-air jet unit.   The ship navigation ice-breaking device according to claim 5, wherein the extension frame includes a buffer portion formed to buffer the hot air jet unit.   The ship navigation ice-breaking device according to claim 1, wherein the hot air jet unit is disposed in a direction intersecting a traveling direction of the ship. The hot air jet unit is
A compressor for pumping air;
A second heat exchange part formed to heat the air by the heat medium;
The ship navigation ice-breaking device according to claim 1, further comprising: a plurality of nozzles configured to inject the heated air at high speed.   2. The heating knife unit according to claim 1, further comprising a heating knife unit formed in the form of a blade disposed vertically in front of the heating cover unit and configured to be melted by being heated by the heating medium. Ice navigation system for ship navigation.   The ship navigation ice-breaking device according to claim 9, wherein the heating knife unit includes a third heat exchanging unit for exchanging heat with the heat medium.   The ship navigation ice-breaking device according to claim 9, further comprising a position control unit for adjusting a tilt and a depth of the heating knife unit.   The ship navigation ice-breaking device according to claim 1, wherein the heat medium is an oil-based one capable of transporting heat at a temperature of 250 to 450 ° C. A boiler for heating the heat medium;
A high temperature pump configured to pump the heated heating medium;
A heating cover unit configured to be heated by a heat medium transferred by the high-temperature pump and configured to be mounted on a bow of a ship;
A de-icing for ship navigation comprising: a heating knife unit disposed vertically in front of the heating cover unit, formed in the form of a blade, and heated to melt the ice by the heating medium. apparatus. A boiler for heating the heat medium;
A high temperature pump configured to pump the heated heating medium;
A hot air jet unit configured to be heated by a heat medium transferred by the high temperature pump, disposed in front of a bow of a ship, and configured to inject air heated by the heat medium;
A demolition device for marine navigation, comprising a heating knife unit formed in the form of a blade arranged vertically in front of the hot air jet unit and heated to melt the ice by the heat medium .

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