KR101792704B1 - Model ship - Google Patents

Model ship Download PDF

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Publication number
KR101792704B1
KR101792704B1 KR1020150158396A KR20150158396A KR101792704B1 KR 101792704 B1 KR101792704 B1 KR 101792704B1 KR 1020150158396 A KR1020150158396 A KR 1020150158396A KR 20150158396 A KR20150158396 A KR 20150158396A KR 101792704 B1 KR101792704 B1 KR 101792704B1
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South Korea
Prior art keywords
model
ship
unit
model ship
ship body
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KR1020150158396A
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Korean (ko)
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KR20170055346A (en
Inventor
권종오
김진학
이영진
조희상
이동연
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삼성중공업(주)
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    • B63B9/00—
    • B63B9/02—
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)

Abstract

The present invention relates to a model ship, a model ship according to the present invention includes a model ship body having a reduced model of the ship and having a space portion on the aft side; A model propulsion unit disposed in the space portion and detachably installed in the model ship body; And a sensor unit installed on the model ship body and measuring the resistance by the model propulsion unit. According to this embodiment, the resistance of the model ship can be measured in the recirculating water tank, and the effect of improving the performance of the ship energy conservation apparatus can be evaluated in the recirculating water tank.

Description

MODEL SHIP

The present invention relates to a model ship, and more particularly, to a model ship capable of measuring a resistance by a dynamometer of a ship in a circulating water tank.

In order to efficiently design the ship shape, propeller and various addendums in the course of drying the ship, a model ship having a reduced scale model of the ship is manufactured and various tests are carried out to evaluate the model propeller and the speed performance of the ship. Preceded. In other words, the model ship is reduced to the same ratio as the ship to be designed, and various tests such as water resistance according to the shape of the model ship and propulsion force measurement according to the shape of the curved surface of the propeller are carried out in the towing tank or circulating water tank.

Testing of model ships may be carried out in the towing or returning water tanks. The test of the model vessel in the towing tank is performed by measuring the resistance of the model vessel and the efficiency of the propeller while towing the model vessel in the long tank. The method using the towing tank requires a large space. In addition, there is a problem in that the performance of the ship at high speed navigation can not be accurately estimated because there is a free water surface in the towing tank, there is a limit to increase the forward speed of the model ship due to the wave generation.

On the other hand, the test of the model ship in the recirculating water tank is performed by rotating the water in the tunnel in the recirculating water tank while observing the flow around the thrust tank or evaluating the performance of the propulsion system while restricting the model ship to the recirculating water tank. In the case of the circulating water tank, the inside of the tunnel is filled with water, so there is no free water surface and no waves are generated. The water is rotated at a high speed to evaluate the performance of the ship in the high speed navigation condition. However, the circulating water tank is advantageous to observe the flow around the propeller, but since the model ship is confined to the circulating water tank, it is difficult to accurately determine the reaction force applied to the model ship by the circulating water tank, have.

Recently, in order to increase the efficiency of the propeller, there are many cases where an energy saving device such as a duct or a preswirl stator is installed in the hull in front of the propeller. To evaluate the performance improvement of the energy saving device A lot of effort is being made. However, it is difficult to measure the force by the propeller in the circulating water tank, and the test for evaluating the performance improvement effect of the energy saving device is mainly performed in the towing tank.

An object of the present invention is to provide a model ship capable of measuring a resistance applied to a model ship by a propeller in a recirculating water tank.

Another object of the present invention is to provide a model ship capable of evaluating the performance improvement effect of the energy saving device of a ship in a recirculating water tank.

The problems to be solved by the present invention are not limited to the above-mentioned problems. Other technical subjects not mentioned will be apparent to those skilled in the art from the description below.

A model ship according to one aspect of the present invention includes: a model ship body having a reduced model of the ship and having a space portion at a stern side; A model propulsion unit disposed in the space portion and detachably installed in the model ship body; And a sensor unit installed on the model ship body for measuring the resistance of the model propulsion unit.

Wherein the sensor unit is installed on the upper side of the space portion of the model ship main body, the model pushing unit is detachably installed on the lower surface of the sensor unit, and the sensor unit has a resistance force acting in the longitudinal direction of the model ship by the model pushing unit Can be measured.

The model propulsion unit may further include a buffer member installed to be spaced apart from the model hull of the model ship body and installed between the model ship body and the model propulsion unit.

At least one of the model ship body and the model propulsion unit may be provided with a reduced model of the energy saving device.

The model propulsion unit may include a model propeller and a model motor that rotates the model propeller by a model shafting system.

The model ship may be installed at a tunnel ceiling portion of the recirculating water tank, and the model pushing portion may be installed at a lower position than the tunnel ceiling portion of the recirculating water tank.

According to the embodiment of the present invention, a model vessel capable of evaluating the resistive force applied to a model ship by a propeller and the performance improving effect of a ship energy saving apparatus can be evaluated in a recirculating water tank.

The effects of the present invention are not limited to the effects described above. Unless stated, the effects will be apparent to those skilled in the art from the description and the accompanying drawings.

1 is a longitudinal sectional view showing a model vessel 100 according to an embodiment of the present invention installed in a recirculating water tank 10;
2 is a cross-sectional view schematically showing a model ship 100 according to an embodiment of the present invention.
3 is a plan view of a model ship 100 according to an embodiment of the present invention.
4 is a view showing a model ship body 110 constituting a model ship 100 according to an embodiment of the present invention.
FIG. 5 is an enlarged view showing a portion 'B' of FIG. 2. FIG.
6 is a view for explaining the operation and the action of the sensor unit constituting the model ship 100 according to the embodiment of the present invention.
7 is a cross-sectional view schematically showing a model ship 100 according to another embodiment of the present invention.

Other advantages and features of the present invention and methods for accomplishing the same will be apparent from the following detailed description of embodiments thereof taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and the present invention is only defined by the scope of the claims. Although not defined, all terms (including technical or scientific terms) used herein have the same meaning as commonly accepted by the generic art in the prior art to which this invention belongs. A general description of known configurations may be omitted so as not to obscure the gist of the present invention. In the drawings of the present invention, the same reference numerals are used as many as possible for the same or corresponding configurations. To facilitate understanding of the present invention, some configurations in the figures may be shown somewhat exaggerated or reduced.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises", "having", or "having" are intended to specify the presence of stated features, integers, steps, operations, components, Steps, operations, elements, parts, or combinations thereof, whether or not explicitly described or implied by the accompanying claims.

A model ship according to an embodiment of the present invention includes a model ship body having a space portion at the stern side, a model propulsion portion detachably installed in the space portion, and a sensor . In this embodiment, the model ship body and the model propelling unit have a separable structure so that the resistance of the model propelling unit can be measured. However, since the model propulsion unit is not constrained to the circulating water tank but is suspended from the model ship body, the resistance of the model propulsion unit is measured by the sensor unit, and the performance of the dynamometer is accurately measured Can be evaluated. Therefore, according to the present embodiment, the performance improvement effect of the energy saving device of the ship can be evaluated in the recirculating water tank, and the performance of the ship at high speed navigation can be evaluated accurately.

1 is a longitudinal sectional view showing a model vessel 100 according to an embodiment of the present invention installed in a recirculating water tank 10; Referring to FIG. 1, a model ship 100 is fabricated to have a reduced model of the ship. The recirculating water tank 10 may have a tunnel 14 through which water is circulated by the impeller 16. The circulation flow of water in the tunnel 14 is shown in Fig. 1 as an arrow.

The model vessel 100 may be installed in the tunnel ceiling portion 12 of the recirculating water tank 10 to evaluate the propeller and speed performance (resistance) of the ship. In the present specification, the term 'resistive force' may refer to a pressure acting on the model ship 100 by a propeller, an energy saving device, or the like, or a variation thereof or various physical quantities corresponding thereto. The upper part of the model ship 100 is fixed to the groove part recessed into the tunnel ceiling part 12 and the lower part of the model ship 100 can be disposed at a position lower than the tunnel ceiling part 12.

2 is a cross-sectional view schematically showing a model ship 100 according to an embodiment of the present invention. 3 is a plan view of the model ship 110 according to one embodiment of the present invention. 1 to 3, a model ship 100 includes a model ship body 110, a model propelling unit 120, a sensor unit 130, and a cushioning member 140. When the model ship body 110 and the model propulsion unit 120 are combined, a reduced model of the ship to be designed is formed.

FIG. 4 is a sectional view showing a model ship body 110 constituting a model ship 100 according to an embodiment of the present invention, in which the model driving unit 120 is separated. Referring to Figs. 1 to 4, the model ship body 110 is manufactured so that a region excluding the aft spatial portion 112 has a reduced scale model of the ship to be designed. The model ship body 110 is installed to restrain the tunnel ceiling portion 12 of the recirculating water tank 10.

The model ship body 110 has an empty space portion 112 for installation of the model propelling portion 120 on the aft side. The space portion 112 may be provided in a space corresponding to the model driving portion 120. The model propelling unit 120 is disposed in the space portion 112 of the model ship body 110 and is detachably installed on the model ship body 110 using bolts or screws.

In one embodiment, the model propelling unit 120 may include a body portion 122 in which a dynamometer is installed, and a dynamometer installed in the body portion 122. In one embodiment, the dynamometer includes a model propeller 124, a model motor 126 for rotating the model propeller 124 through a model shafting system, and a resistance dynamometer 128 for measuring thrust and torque by the model propeller 124. [ . ≪ / RTI >

The model propelling unit 120 may be installed at a position lower than the tunnel ceiling portion 12 of the recirculating water tank 10. [ For example, the model driving unit 120 may be spaced a predetermined distance (for example, 100 mm or more) from the tunnel ceiling portion 12 so as to avoid a disturbing effect due to the wall surface of the tunnel of the recirculating water tank 10. The model propulsion unit 120 may have a structure in which the model propulsion unit 120 is suspended from the model ship body 110 without being directly restrained by the circulation water tank 10. [

The sensor unit 130 may be installed in the model ship body 110 to measure the resistance force of the model driving unit 120. The sensor unit 130 may be installed on the upper side of the space 112 of the model ship body 110. The sensor unit 130 includes a fixing unit 132 installed in a space formed inside the upper deck of the model ship body 110 and a fixing unit 132 installed at a lower portion of the fixing unit 132, Axis sensor 134 that measures the force (resistance) applied in the longitudinal direction X of the model ship 100 by the force sensor.

The model driving unit 120 may be detachably installed on the lower surface of the one-axis sensor 134. The model driving unit 120 may be installed on the lower surface of the one-axis sensor 134 by a plurality of connecting members 129. To this end, a groove may be formed in the upper portion of the space 112 of the model hull 110a, into which the connecting member 129 is inserted. The model driving unit 120 is connected to the sensor unit 130 by the four connecting members 129. However, the number of the connecting members 129 may be variously changed.

Since the model propulsion unit 120 is provided to be replaceable, only a plurality of model propulsion units 120 having various designs of a propeller and an energy saving device are separately manufactured and are connected to the model ship body 110 alternately, . Therefore, it is possible to test the performance of a plurality of model propelling units 120 using one model ship body 110, thereby reducing the cost for model ship testing.

FIG. 5 is an enlarged view showing a portion 'B' of FIG. 2. FIG. 5, the model driving unit 120 is installed to be spaced apart from the model hull 110a of the model ship body 110 with the buffer member 140 interposed therebetween. The shock absorbing member 140 may be installed between the model ship body 110 and the model driving unit 120 to alleviate an impact caused by collision between the model ship body 110 and the model driving unit 120.

The buffer member 140 may be provided with a material having a small elastic modulus so as to reduce the influence on the resistance measurement of the sensor unit 130. [ In one embodiment, the buffer member 140 may be provided in a material such as styrofoam. The cushioning member 140 may be attached to the model hull 110a on the side of the space portion 112 or may be attached to the outer surface of the model driving unit 120. [ The buffer member 140 is formed on both the vertical section on the front side of the space 112 and the horizontal section on the upper side of the space 112 in the model hull 110a, It is possible. The model ship body 110 or the model propelling unit 120 may be further provided with a reduced model of an energy saving device (e.g., a duct or a current-carrying blade).

6 is a view for explaining the operation and the action of the sensor unit constituting the model ship 100 according to the embodiment of the present invention. 6, the driving force of the model propelling unit 120 acts in the longitudinal direction X of the model ship 100 so that the lower plate 1344 of the one-axis sensor 134 is inclined with respect to the upper plate 1342 And the propulsive force at this time is measured by the deformation amount measuring sensor 1346 between the upper plate 1342 and the lower plate 1344. [ The deformation amount measurement sensor 1346 may be provided with a sensor that outputs an electrical signal proportional to the deformation amount, for example, a piezoelectric element or the like.

7 is a side view schematically showing a model ship 100 according to another embodiment of the present invention. Referring to FIG. 7, an energy saving device 150 such as a duct for increasing the efficiency of the propeller is provided at the stern side of the model ship 100. According to this embodiment, the resistive force measurement values of the sensor unit 130 measured according to the installation state, the installation position and the structure of the energy saving device 150 are compared to evaluate the performance improvement effect of the energy saving device 150 .

That is, by replacing the model ship body 110 or the model propelling unit 120 having various energy saving devices, it is possible to compare the performance improvement effect of the energy saving device by performing the test using the model ship in the returning water tank. According to this embodiment, it is possible to accurately evaluate the performance of a ship in a high-speed voyage condition by performing a model ship performance evaluation test in a recirculating water tank, and to measure the performance of the ship in an environment similar to the actual environment of the ship, Accuracy can be improved.

It is to be understood that the above-described embodiments are provided to facilitate understanding of the present invention, and do not limit the scope of the present invention, and it is to be understood that various modifications are possible within the scope of the present invention. It is to be understood that the technical scope of the present invention should be determined by the technical idea of the claims and the technical scope of protection of the present invention is not limited to the literary description of the claims, To the invention of the invention.

10: Circulating water tank 12: Tunnel ceiling
100: Model Ship 110: Model Ship Body
110a: model hull 112:
120: model propulsion unit 122:
124: Model propeller 126: Model motor
128: Resistance dynamometer 130: Sensor part
132: Fixing portion 134: 1-axis sensor
1342: top plate 1344: bottom plate
1346: Deformation amount measuring sensor 140: Buffer member
150: Energy saving device

Claims (6)

A model ship body having a reduced scale model of the ship and having a space portion at the stern side;
A model propulsion unit disposed in the space portion and detachably installed in the model ship body; And
And a sensor unit installed on an upper side of the space portion of the model ship body and measuring a resistance force of the model propulsion unit,
The model pushing unit is suspended from the lower surface of the sensor unit,
Wherein the sensor unit is configured to directly measure a resistance force acting on the model ship body by the model pushing unit. The method according to claim 1,
Wherein the sensor unit comprises: a fixing unit installed in a space formed in the upper deck of the model ship body; and a sensor unit installed on a lower portion of the fixing unit to measure a resistance force acting in the longitudinal direction of the model ship by the model- Model ship containing sensor. The method according to claim 1,
The model propulsion unit is installed to be spaced apart from the model hull of the model ship body,
And a cushioning member provided between the model ship body and the model propulsion unit. The method according to claim 1,
A model ship on which at least one of the model ship body and the model propulsion unit is provided with a reduced model of the energy saving device. The method according to claim 1,
The model propulsion unit includes a model propeller and a model motor that rotates the model propeller by a model shaker. The method according to claim 1,
The model ship is installed in a tunnel ceiling portion of the recirculating water tank,
Wherein the model propulsion unit is installed at a position lower than the tunnel ceiling portion of the recirculating water tank.
KR1020150158396A 2015-11-11 2015-11-11 Model ship KR101792704B1 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101379403B1 (en) * 2013-03-14 2014-03-28 한국해양과학기술원 Installation structure of drive motor and dynamometer and installation method of drive motor and dynamometer using it

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101379403B1 (en) * 2013-03-14 2014-03-28 한국해양과학기술원 Installation structure of drive motor and dynamometer and installation method of drive motor and dynamometer using it

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