KR20110134318A - Fire damper for marine structure - Google Patents

Abstract

PURPOSE: A fire damper for a marine construction is provided to improve the heat resistance and seclude the fire by rapidly operating a blade. CONSTITUTION: A fire damper for a marine construction comprises an external frame(100), a blade(200), an insulating material(300), an insulating seal(400), an actuator(500), a casing(600), a controller and a steering wheel(700). The elements of the fire damper for the marine construction are attached to the external frame. The blade is installed in the inner side of the external frame. While revolving through a shaft, the blade opens or closes the external frame inner side. The insulating material is installed in the blade inner side. The insulating seal is attached to the inner side of the external frame and seals hermetically the interval between the blade and external frame. The actuator rotates the blade for the opening/closing of the damper. The casing protects the actuator.

Description

FIRE DAMPER FOR MARINE STRUCTURE}

The present invention relates to a fire damper for an offshore structure.

Fire is one of the most dangerous threats to the safety of ships, and it is important to ensure that the fire does not spread easily even if a fire occurs during an explosion. Since the ship is in a very special environment, the ocean, it cannot be helped or aided from the outside, so everything must be solved in-house.

 In addition, when a fire occurs in a ship, toxic gases and flames move through a duct through a firewall in an instant, and the effects of a fire in one zone affect the other zone, thereby preventing damage caused by a flame. Fire dampers are used to block flames.

Currently, the demand for fossil fuels is exploding on the planet. In particular, the whole world is paying attention to the underground resources at sea rather than the underground resources on land. Underground resources for the continental shelf, where the depth is relatively low, have already been developed or are nearing completion. This acquisition of resources is at a time when the direction of development is shifting to deeper waters.

Major oil refining companies in the world are also preparing for deep sea oil extraction structures and ships. Therefore, it should be recognized that the installation area of offshore structures is gradually moving to the deep sea area, and the need for new concept structures is increasing.

In the event of a fire in an offshore structure, the HVAC Fire Damper automatically blocks the fire area to block the spread of fire and toxic gases. Fire Damper can be classified as a structural feature that must be able to withstand high temperatures and must not be opened to extinguishing water pressure during extinguishing. In the offshore structures, the HVAC system maintains a pressure of about 50 Pa higher than that of the corridor in spaces such as machinery spaces, residential areas, control rooms and storage rooms. It adopts the way it keeps. On the other hand, in the case of the exhaust side, the fire damper is installed for the purpose of disaster prevention rather than controlling the flow rate. When the fire occurs in the aforementioned zone or area, the fire damper is automatically blocked by the temperature sensor or gas detection sensor. At this time, by supplying an inert gas to the fire zone independently from the air supply side to lower the oxygen concentration, and cut off the oxygen flowing from the outside to extinguish the fire.

In addition to offshore structures, Fire Damper is a safety device of HVAC system in preparation for fire. It is essential for all shipbuilding and offshore ships such as cargo ships, cruise ships, submarines, FPSOs and warships. In particular, ships handling offshore structures and FPSOs and crude oil always have the risk of explosion as well as general fires. Therefore, it is essential for safety that an actuator with explosion-proof function that can operate the Fire Damper safely in case of explosion and an actuator that can be operated remotely in case of power failure. In addition, since the fire damper should be cut off quickly in case of fire, the breaking speed should be secured with three basic performances (heat resistance, explosion proof, and responsiveness) that must be solved within 4 seconds.

It is an object of the present invention to provide a fire damper for an offshore structure which can be operated quickly.

Moreover, an object of this invention is to provide the fire damper for marine structures excellent in heat resistance.

It is another object of the present invention to provide a fire damper for a marine structure having a blade capable of minimizing deformation due to thermal stress and thermal expansion.

The present invention is attached to the damper to the offshore structure, the outer frame to which the other components of the fire damper for offshore structures is attached, installed on the inside of the outer frame, blades for opening or closing the outer frame inside while rotating by the shaft, blades Insulation material installed in the inner side, Insulation seal attached to the inner side of the outer frame to seal the blade and the outer frame at the same time performing a heat insulation function, attached to one outer side of the outer frame blade for opening / closing the damper An actuator for rotating the actuator, a casing for protecting the actuator, a controller for automatically driving the actuator, and a handle extending from the actuator to be exposed to the outside of the casing, and a handle capable of manually opening and closing the blade; Provides fire dampers for

In another embodiment of the present invention, the actuator is installed on the same shaft as the motor for driving the blade and the first worm gear for transmitting power from the motor, the first worm wheel meshing with the first worm gear, and the first worm wheel. And a power transmission mechanism including a second worm gear and a second worm wheel engaged with the second worm gear, wherein the shaft for rotating the blade is connected to a central axis of the second worm wheel. Provides fire dampers for

In another embodiment of the present invention, the actuator has a first shell for sealing the motor and the power transmission mechanism and a second shell for sealing the control unit, wherein the second shell is installed on the side of the first shell. Provide a fire damper for the structure.

In another embodiment of the present invention, there is provided a fire damper for an offshore structure, further comprising a clutch for switching between manual driving by a handle and automatic driving by a motor.

In another embodiment of the present invention, the motor is capable of driving in both directions, it provides a fire damper for offshore structures, characterized in that the automatic drive by the motor at the time of opening and closing.

In another embodiment of the present invention, the stopper is provided at the bottom and top of the inner surface of the outer casing, the stopper is formed with a step so that the stop more protrudes than the top and bottom, the top and bottom of the blade is hooked to engage the stopper It provides a fire damper for an offshore structure, characterized in that the projection is formed.

In another embodiment of the present invention, the blade is divided into a plurality of blades, the groove is formed at one end of the blade, the hook-shaped projection is formed at the other end is formed so that the grooves and protrusions of the neighboring blades mesh with each other. It provides a fire damper for an offshore structure, characterized in that.

The fire damper for marine structures provided by the present invention is excellent in heat resistance.

In addition, the fire damper for marine structures provided by the present invention can block the fire by operating the blade in a short time.

In addition, the fire damper for marine structures provided by the present invention can operate by itself a certain number of times even in the event of a power failure in which electricity supply is cut off.

1 and 2 are views showing a fire damper for an offshore structure according to a first embodiment of the present invention,
3 is a view showing a fire damper for an offshore structure according to a second embodiment of the present invention;
4 is a view showing a fire damper for an offshore structure according to a third embodiment of the present invention;
5 is a view showing a blade sealing structure of a fire damper for an offshore structure according to a third embodiment of the present invention;
6 is a view showing a stopper structure of a fire damper for an offshore structure according to an embodiment of the present invention;
7 is a view showing an actuator provided in the fire damper for marine structures according to an embodiment of the present invention,
8 is a view showing a torque switch of an actuator provided in the fire damper for an offshore structure according to an embodiment of the present invention;
9 is a view showing a clutch structure of an actuator provided in the fire damper for an offshore structure according to an embodiment of the present invention;
10 is a view showing the appearance of an actuator provided in the fire damper for an offshore structure according to an embodiment of the present invention.

1 and 2 illustrate a fire damper for an offshore structure according to a first embodiment of the present invention.

The fire damper for an offshore structure according to the first embodiment of the present invention, the damper is attached to the offshore structure, the outer frame 100 to which the other components of the fire damper for offshore structures are attached, the inside of the outer frame 100 Is installed, the blade 200 is rotated by the shaft 210 to open or close the outer frame 100, the heat insulating material 300 is installed inside the blade 200, the inner frame 100 is attached to the inside An insulating seal 400 that seals between the blade 200 and the outer frame 100 and performs an insulating function, and is attached to an outer side of the outer frame 100 so as to open / close the damper. Actuator 500 for rotating the (), and casing 600 for protecting the actuator (500) is provided. In addition, the handle 700 extends from the actuator 500 and is exposed to the outside of the casing 600, and is capable of manually opening and closing the blade 200.

The heat insulator 300 provided inside the blade 200 is made of cerac wool, so that the heat insulating property can be improved than using conventional rock wool.

3 is a view showing a fire damper for an offshore structure according to a second embodiment of the present invention. The fire damper for an offshore structure according to the second embodiment of the present invention has the same configuration as the first embodiment except that the outer frame 100 'and the blade 200' are formed in a circular shape.

4 is a view showing a fire damper for an offshore structure according to a third embodiment of the present invention. The fire damper for marine structures according to the third embodiment of the present invention is formed by dividing a plurality of blades 200 " into the outer frame 100 to transmit the rotational force of the actuator 500 to each blade 200. FIG. Except that a plurality of gears 700 are formed has the same configuration as the first embodiment of the present invention.

5 is a view showing a blade sealing structure of a fire damper for an offshore structure according to a third embodiment of the present invention. Blade 200 "of the fire damper for marine structures according to the third embodiment of the present invention blocks the area by rotating the blade 200" divided into a plurality of engagement. The plurality of blades 200 ″ are provided with grooves 200h formed at one end and hooked protrusions 200p formed at the other ends thereof so as to be engaged with each other. Such grooves 200h and the protrusions 200p have a structure. By providing, each blade (200 ") of each other can also be combined more firmly, it is possible to increase the contact area between the blade (200") to ensure airtightness.

6 is a view showing a stopper structure of a fire damper for an offshore structure according to an embodiment of the present invention. Fire damper for an offshore structure according to an embodiment of the present invention, the stopper 110 is formed on the upper and lower surfaces of the outer frame 100 to help the blade 200 stop the rotation in the correct position. The stopper 110 is formed with a step so that the stop 110M protrudes more than the upper end 110H and the lower end 110L. A lower end of the blade 200 is provided with a hook-shaped protrusion 200p to be engaged with the stopper 110. Through this structure, the contact area between the stopper 110 and the blade 200 can be widened to enhance airtightness. On the other hand, the structure of the stopper 110 and the lower structure of the blade can be applied to both the first embodiment to the third embodiment.

7 is a view showing an actuator provided in the fire damper for marine structures according to an embodiment of the present invention, Figure 8 is a torque switch of the actuator provided in the fire damper for marine structures according to an embodiment of the present invention. 9 is a view showing a clutch structure of an actuator provided in the fire damper for an offshore structure according to an embodiment of the present invention.

The actuator 500 provided by the fire damper for an offshore structure according to an embodiment of the present invention is a power source from the motor 210 and the motor 210 for generating power for driving the blades 200, 200 ′, 200 ″. The first worm gear 520, the first worm wheel 530 meshed with the first worm gear 520, and the second worm gear installed on the same shaft 540 as the first worm wheel 530 for transmitting the 560 and a second worm gear 560 having a power transmission mechanism including an interlocking second worm wheel 570, rotating the blade 200 around the central axis 590 of the second worm wheel 570. The shaft 210 is connected to the blade 200 is opened or closed according to the forward / reverse rotation driving of the motor 510. On the central axis 590 to adjust the force and speed for rotating the blade 200 A plurality of reduction gears 595 may be provided.

In addition, the torque switch 550 may be provided to detect the shaft behavior of the second worm gear 560 or the second worm wheel 570 to stop the motor 210 when over torque is applied.

Meanwhile, clutch members are provided on the shaft 540 on which the first worm wheel 530 and the second worm gear 560 are installed to control automatic opening and closing. The clutch member includes a clutch handle 580, a clutch rotation shaft 582, a first clutch member 584, a second clutch member 586, and an elastic member 588. The first clutch member 584 is fixed to the first worm wheel 530, and the second clutch member 586 is fixed to the rotating rotating plate by the manual adjustment handle 700. When the first clutch member 584 moves so that the first worm wheel 530 and the first worm gear 520 mesh with each other, the blades 200, 200 ′, 200 ″ are automatically opened and closed, and the clutch handle 580 ), The blades 200, 200 ′ and 200 ″ are opened and closed by the handle 700 when the first clutch member 584 is moved to engage the second clutch member 586.

10 is a view showing the appearance of the actuator provided in the fire damper for an offshore structure according to an embodiment of the present invention. Actuator 500 according to an embodiment of the present invention is the motor 510, the first worm gear 520, the first worm wheel 530, the second worm gear 560 shown in Figures 7 to 9, The second worm wheel 570 includes a first shell 501 for sealing a mechanism such as clutch members, and a second shell 502 for sealing a controller such as a substrate for controlling the mechanism.

Claims (7)

An outer frame to which the damper is attached to the offshore structure and to which other components of the fire damper for the offshore structure are attached;
A blade installed inside the outer frame, the blade being opened or closed inside the outer frame while being rotated by the shaft;
Insulation material installed inside the blade;
An insulation seal attached to an inner side of the outer frame to seal between the blade and the outer frame and to perform an insulation function;
An actuator attached to an outer side of the outer frame to rotate the blade for opening / closing the damper;
A casing to protect the actuator;
A control unit for automatically driving an actuator; And
And a handle extending from the actuator to the outside of the casing to open and close the blade manually. The method of claim 1,
The actuator may include a motor that generates power for driving the blade; And
A first worm gear for transmitting power from the motor, a first worm wheel meshing with the first worm gear, a second worm gear installed on the same axis as the first worm wheel, and a second worm wheel meshing with the second worm gear. A power transmission mechanism comprising a; further comprising,
Fire damper for offshore structures, characterized in that the shaft for rotating the blade is connected to the central axis of the second worm wheel. The method of claim 2,
The actuator has a first shell for sealing the motor and the power transmission mechanism and a second shell for sealing the control portion, wherein the second shell is installed on the side of the first shell. The method of claim 2,
Fire damper for offshore structure further comprising; a clutch for switching between manual drive by the handle and automatic drive by the motor. The method of claim 2,
The motor can drive in both directions,
Fire damper for offshore structures, characterized in that the automatic drive by the motor when opening and closing. The method of claim 1,
Stoppers are provided at the bottom and top of the outer casing inner surface,
The stopper is stepped so that the suspension protrudes more than the top and bottom,
The top and bottom of the blade is a damping damper for offshore structures, characterized in that the hooked projection is formed to engage the stopper. The method of claim 1,
The blade is divided into a plurality of blades,
A groove is formed at one end of the blade, and a hook-shaped protrusion is formed at the other end to the fire damper for offshore structures, characterized in that the groove and the projections of the neighboring blades are formed to mesh with each other.

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