KR101727800B1

KR101727800B1 - Device for heating hellideck

Info

Publication number: KR101727800B1
Application number: KR1020150063268A
Authority: KR
Inventors: 강상훈; 신원협; 박제연
Original assignee: 주식회사 엔케이
Priority date: 2015-05-06
Filing date: 2015-05-06
Publication date: 2017-04-17
Also published as: KR20160131279A

Abstract

The present invention proposes a device for preventing freezing of frost on the top surface of a helideck or for melting snow. In the apparatus of the present invention, the concave grooves (12, 14) are formed along the longitudinal direction, and a heater receiving groove (16) corresponding to the upper outline of the heater is formed on the bottom surface of the concave groove (10); And a cover (20) housed in the concave groove of the pancake and having a heater receiving groove (26) corresponding to the lower outer shape of the heater formed on the bottom surface and an upper surface forming the same plane as the upper surface of the pancake. The heater accommodating groove of the cover and the heater accommodating groove of the pancake accommodate the heater 30 to generate heat by application of power, thereby preventing freezing or melting the rust. The gap between the heater, the cover and the upper surface portion of the pancake is filled with liquid or powder filler material having thermal conductivity to maximize heat conduction efficiency.

Description

Device for heating hellideck}

The present invention relates to a helideck, and more particularly to a helideck which is filled with a filler having a high thermal conductivity around the heater while filling a heater for generating heat on the top surface of the helideck to prevent the occurrence of freezing, To an icemaker preventing device of a helideck configured to enable efficient heat conduction.

Generally, an offshore plant such as a drill ship, FPSO (Floating, Production, Storage and Offloading) or a ship staying in the sea for a long time is generally operated by a helicopter in order to make the movement of the personnel quick and smooth . In order to use the helicopter, the helicopter must be installed on the offshore structure or the ship so that the helicopter can take off and land.

The helideck is composed of a pancake having a deck floor on which a helicopter is taken off and landed, and a support for supporting the pancake. The pancakes are formed, for example, by connecting a plurality of flanks, which are aluminum extruded materials, to form a deck floor on which the helicopter is taken off and landed on the upper surface. The pancake supporting part supporting the pancake is generally composed of a combination of a plurality of aluminum H beams and steel H beams supporting the pancakes in the lower part.

It can be said that the helicopter taking off and landing using such a helideck is much affected by the weather. In particular, when an offshore structure or vessel equipped with a helideck is operated in the polar regions, ice accumulation occurs on the helideck or icing occurs due to moisture. As snow accumulates on the heli-deck and freezing occurs, it can adversely affect the take-off and landing of the helicopter, which can cause a dangerous situation especially for those who use the helicopter. Therefore, snow or ice on the top of the heli-deck must be effectively removed as soon as possible.

According to the conventional technique for heating the top surface of the helideck, a dedicated heater for generating heat by supplying electricity is provided on the bottom surface. However, since the heater is directly exposed to a low-temperature atmosphere, There was a drawback. Korean Patent Laid-Open Publication No. 10-2015-0026020 proposes a technique of removing icing by spraying seawater heated by a heating device on the top surface of a helideck using a nozzle. However, such conventional technology is expected to be difficult to commercialize because of various disadvantages due to enlargement of the apparatus.

It is an object of the present invention to provide a device for preventing freezing of ice on the heli-deck or for removing snow or preventing it in advance.

It is a more specific object of the present invention to provide an effective anti-icing device by using a heater that generates heat by supplying electric power and sufficiently securing thermal conductivity.

According to an aspect of the present invention, there is provided an apparatus for preventing freezing of a heli-deck, comprising: a concave groove formed along a longitudinal direction of the helix; and a heater receiving groove corresponding to an upper outline of the heater is formed on a bottom surface of the concave groove A pancake having an upper surface portion; A cover accommodated in the concave groove of the pancake and having a heater receiving groove corresponding to a lower outer shape of the heater formed on the bottom surface and having an upper surface forming the same plane as the upper surface of the pancake; And a heater accommodated in the heater receiving groove of the cover and the heater receiving groove of the pancake and generating heat by application of power.

According to the embodiment of the present invention, the concave groove is constituted by a first concave groove formed concavely in the upper surface portion and a second concave groove formed partially concave on the bottom surface of the first concave groove. The cover is composed of a flange portion accommodated in the first concave groove and a protrusion portion protruding from the bottom surface of the flange portion and accommodated in the second concave groove.

According to another embodiment of the present invention, the gap formed between the heater, the cover and the upper surface portion of the pancake is filled with filler in a liquid or powder state having thermal conductivity, thereby maximizing the efficiency of heat conduction.

According to another embodiment of the present invention, the cover is fixed to the pancake by a screw-engaging member, and the lower end of the screw-engaging member is screwed to the pancake without protruding to the lower end of the pancake.

According to the present invention having such a technical structure, it is possible to minimize the heat loss due to conduction of heat to the pancake other than the pancake by filling the heater at a certain depth on the upper surface of the pancake. This means that the heat generated by the heater is effectively conducted in the lateral direction from the upper portion of the pancake.

In the present invention, it can be seen that the empty space around the heater embedded at a certain depth from the upper part of the pancake formed by extrusion of aluminum is filled with the filler having high thermal conductivity. Thus, it can be seen that a sufficient amount of heat is conducted to the upper surface of the pancake through substantially efficient heat conduction while substantially preventing heat loss through the void space.

The structure for embedding the heater according to the present invention and the structure for increasing the thermal conductivity by filling the space around the buried heater with a material having high thermal conductivity can quickly and effectively remove rust or ice accumulated in the deck floor formed on the upper surface of the pancake In addition, it is possible to expect an effect of sufficiently preventing the occurrence of such freezing by preheating.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exemplary diagram showing an exploded view of an inventive pancake. Fig.
2 is a cross-sectional exemplary view of a pancake of the present invention.

Hereinafter, the present invention will be described in more detail based on the embodiments illustrated in FIGS. 1 and 2. FIG. 1 and 2, in the helideck freezing prevention apparatus according to the present invention, a heater 30 for generating heat by the application of electricity is provided on the upper surface portion 11 of the pile cake 10 of the helideck And is installed in a state of being buried at a certain depth.

The upper surface portion 11 of the pancake 10 has a horizontal surface as a portion forming substantially the deck floor. In the upper surface portion 11 of the pancake 10, a first concave groove 12 is formed to have a predetermined length along the longitudinal direction (extrusion direction). In addition, the cover 20 is inserted into the first concave groove 12 to form the same plane as the top surface portion 11. A heater 30 is provided between the upper surface portion 11 of the pancake 10 and the cover 20 so that the heater 30 is substantially fixed to the upper surface portion 11 of the pancake 10 It means that it is installed in a state where it is buried deeply.

When the heater 30 is installed between the cover 20 and the first concave groove 12 of the upper surface portion 11, the heater 30 is substantially not exposed to the air, Which means minimizing the loss of heat generated. That is, the heat generated by the heater 30 can maximize the efficiency of conduction to the upper surface portion 11 and the cover 20 in contact with the heater.

In the illustrated embodiment, the second concave groove 14 is formed on the bottom surface of the first concave groove 12 of the upper surface portion 11. A heater receiving groove 16 is formed on the bottom surface of the second concave groove 14 so that the heater receiving groove 16 is formed to have a sectional shape corresponding to the lower portion of the outer shape of the heater 30 will be. Therefore, when the heater 30 is accommodated in the heater receiving groove 16, the most contact surface is increased.

A protruding portion 24 is longitudinally formed on the bottom surface of the cover 20 so as to correspond to the second concave groove 14 and a heater receiving groove 26 is formed on the bottom surface of the protruding portion 24 . The heater receiving groove 26 may be formed to have a cross-sectional shape corresponding to the upper portion of the outer shape of the heater. The protrusion 24 has a height corresponding to the depth of the second concave groove 12 and the cover 20 can be said to have a flange portion 22 extending outwardly by the protrusion 24 have.

The flange portion 22 extending outwardly from above the projection 24 has a thickness equal to the depth of the first concave groove 12 so that the upper face portion 11 of the pancake 10 is entirely the same plane Can be formed. A second protrusion 24 is formed on the bottom surface of the cover 20 and a second recessed groove 14 is formed in the top surface portion 11 of the pancake 10 to cover the cover 20 with the top surface portion 11 The structural stability during the engagement of the cover 20 and the convenience and stability in joining the bolt as described below can be substantially achieved.

When the heater 30 is seated between the heater receiving groove 26 of the cover 20 and the heater receiving groove 16 of the upper surface portion 11 of the pancake 10, Is fixed to the portion (11). 2, the cover 20 is fixed to the upper surface portion 11 of the pancake 10 by screwing using a screwing member 40 such as a screw or a bolt.

The lower part of the pancake 10 in the helideck can be said to be a space where workability is greatly deteriorated due to a structural problem of installing the pancake support part and a spatial problem due to worker's access and the like. For example, when a bolt is used to fix the cover 20 to the upper surface portion 11 of the pancake, a separate nut screwed to the lower portion of the pancake 10 must be coupled with the bolt. Can be said to be very uncomfortable and unrealistic.

Therefore, even when the cover 20 is fixed to the upper surface portion 11 of the pancake 10, it is not preferable that the lower end portion of the screw engaging member 40 protrudes through the bottom surface of the pancake 10. That is, as shown in the enlarged view of FIG. 2, the lower end of the screw-engaging member 40 must be inside the member forming the pancake 10. In order to do so, a portion near the top surface portion 11 to which the screw coupling member 40 is coupled must have a sufficient thickness, and a portion to which the screw coupling member 40 is coupled is pre-tapped Screw holes should be molded.

As described above, when the cover 20 is coupled to the upper surface portion 11 of the pancake 10, when the cover 20 is inserted into the upper surface of the pancake 10 in a state where the heater 30 is embedded in the middle, As shown in Fig. Here, the cover 20 and the pancake 10 are substantially made of aluminum by extrusion molding, and thus they have a certain limit in terms of accuracy.

Therefore, the gap between the cover 20 and the upper surface portion 11 of the pancake 10 is equal to a certain gap. However, when a clearance is generated between the cover 20 and the upper surface portion 11 of the pancake 10 around the heater 30, the heat generated by the heater 30 is transmitted to the upper surface portion 11 or the cover 20 ) Or it will inevitably degrade the efficiency.

Accordingly, in the present invention, a filler is injected between the cover 20 and the upper surface portion 11 around the heater 30 to prevent the occurrence of the gap described above to maximize the heat conduction efficiency. The filling material of the present invention completely covers the gap between the cover 20 and the pancake 10 including the upper surface portion 11 with the heater 30 as the center, So that it can be conducted more efficiently.

Therefore, it is preferable that such a filler is formed of a thermally conductive material, and it is possible to use a gel state or a liquid state, or to use solid particles in the same state as a powder. Alternatively, it is also possible to use metal particles having high thermal conductivity mixed with a filler of a certain liquid phase.

For example, it is considered that the filler material should be filled around the heater 30 from the periphery thereof. For example, it is preferable that the heater receiving grooves 16 and 26 and the protrusions 24 and the second concave grooves 14 As shown in FIG. Then, it is considered that it is preferable to fill the gap between the first concave groove 12 and the flange portion 22 after that.

As described above, according to the present invention, the main technical theme is to maximize the heat conduction efficiency by embedding the heat ray for preventing freezing of the helideck at a predetermined depth from the upper part of the pancake. In order to improve heat conduction efficiency or ensure structural stability, a structure between the cover 20 and the upper surface portion 11 of the pancake is proposed. Furthermore, in order to achieve heat conduction as efficiently as possible without generating a gap, It can be seen that the filler is used.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10 ..... Pancakes
11 ..... upper part
12 ..... first concave groove
14 ..... second concave groove
16 ..... Heater accommodating groove
20 ..... cover
22 ..... flange section
24 ..... protrusion
26 ..... Heater accommodating groove
30 ..... Heater

Claims

A concave groove is formed along the longitudinal direction, and a bottom surface of the concave groove has an upper surface portion formed with a heater receiving groove corresponding to a lower outer shape of the heater;
A cover accommodated in the concave groove of the pancake and having a heater receiving groove corresponding to an upper outer shape of the heater formed on the bottom surface and having an upper surface forming the same plane as the upper surface of the pancake; And
A heater accommodated in the heater receiving groove of the cover and the heater receiving groove of the pancake and generating heat by application of power;
/ RTI >
Wherein the concave groove is composed of a first concave groove formed concavely in an upper surface portion and a second concave groove formed partially concave on a bottom surface of the first concave groove,
Wherein the cover comprises a flange portion accommodated in the first concave groove and a protruding portion protruding from the bottom surface of the flange portion and received in the second concave groove.

delete

The icemaker of claim 1, wherein the gap formed between the heater, the cover and the upper surface portion of the pancake is filled with filler in a liquid or powder state having thermal conductivity.

The icemaker of claim 1, wherein the cover is fixed to the pancake by a screw-engaging member, and the lower end of the screw-engaging member is screwed to the pancake without projecting to the lower end of the pancake.