KR20170039023A

KR20170039023A - Fire damper device

Info

Publication number: KR20170039023A
Application number: KR1020150138103A
Authority: KR
Inventors: 김완재; 김광수; 김창균; 이상민
Original assignee: 한국전력공사
Priority date: 2015-09-30
Filing date: 2015-09-30
Publication date: 2017-04-10

Abstract

A fireproof damper device is disclosed. According to the present invention, the fireproof damper device comprises: a frame unit having an inner space; a wing unit of which a position is varied in accordance with the external wind direction, installed to be rotated in the frame unit; and a rotation control unit fixated to the frame unit to elastically compress a rotational shaft of the wing unit.

Description

FIRE DAMPER DEVICE

FIELD OF THE INVENTION The present invention relates to a fire-fighting damper device, and more particularly, to a fire-fighting damper device that rotates a wing by itself in accordance with a direction of an external wind direction to make a direction of a wind direction coincide with a direction of a wing.

Generally, the fire damper of the ventilation holes installed at the land and sea substations serves to lower the temperature of the transformer main body by introducing outside air, and to prevent diffusion of fire when closed.

Conventional fire dampers consist of a wing that is rotatably installed and a control device that closes the ventilation hole by rotating the wing when a fire occurs. The blades of the fire damper are fixed at a constant angle and the angle of the blades is not changed even when the external wind direction is changed. Therefore, there is a need for improvement.

BACKGROUND ART [0002] The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 1998-0019440 (published on Jun. 10, 1998, entitled "Fire Damper").

It is an object of the present invention to provide a fire-fighting damper device that rotates a wing by itself in accordance with the direction of an external wind direction to make the direction of the wind and the direction of the bling coincide with each other.

The damper device according to the present invention comprises: a frame part forming an inner space; a blade part rotatably installed in the frame part, the blade part having a variable position according to an external wind direction; And a control unit.

Further, it is preferable that the frame portion is formed in a rectangular frame shape, and a plurality of wing portions are provided along the frame portion.

It is also preferable that the present invention further includes a connecting member connecting the plurality of blades and unifying the rotation angle of the blades.

It is also preferable that the wing portion includes a front wing extending to one side of the rotary shaft and a rear wing extending to the other side of the rotary shaft opposite to the front wing.

The first length, which is the distance from the end of the front wing to the rotation axis, is different from the second length, which is the distance from the end of the rear wing to the rotation axis, and the first thickness, which is the thickness of the front wing, .

In addition, the second length is longer than the first length, and the second thickness is smaller than the first thickness.

It is also preferable that the center of gravity of the wing portion and the center of rotation coincide with each other.

The rotation regulating portion includes a housing member fixed to the frame portion facing the rotation shaft, a pressing member located inside the housing member and forming a pressing force toward the rotation shaft, and a torque member positioned between the pressing member and the rotation shaft, It is preferable to include a transmitting member.

The torque transmitting member may include a transmission body inserted into the housing member and being elastically supported at one side by a pressing member, and a first gear member extending toward the rotating shaft in the transmitting body and gears engaged with the rotating shaft in a circumferential direction .

And a second gear member having a concave-convex shape engaging with the first gear member is preferably provided at an end of the rotating shaft facing the first gear member.

Since the direction of the wind direction and the direction of the blades are aligned with each other according to the direction of the external wind direction according to the present invention, the natural ventilation amount is increased compared to the conventional case, and there is no need to install a separate cooling fan, The cost can be reduced.

1 is a perspective view schematically showing a fire-fighting damper device according to an embodiment of the present invention.
2 is a perspective view schematically showing a state in which a blade is rotated according to a change in a wind direction according to an embodiment of the present invention.
3 is a perspective view illustrating a wing according to an embodiment of the present invention.
4 is a perspective view illustrating an exploded view of a rotation control unit according to an embodiment of the present invention.
5 is a perspective view illustrating a state in which a rotation control unit is connected to a second gear member of a wing according to an embodiment of the present invention.
6 is a view schematically illustrating a force generated by the self weight of the wing portion according to an embodiment of the present invention.
FIG. 7 is a schematic view illustrating a state where a wing portion is horizontally installed along an outer wind direction according to an embodiment of the present invention.
8 is a view schematically showing a state in which a wing portion according to an embodiment of the present invention is inclined along an external wind direction.
FIG. 9 is a table comparing the ventilation amount of a conventional damper according to an embodiment of the present invention.
10 is a block diagram of a fire-fighting damper device according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a fire damper device according to an embodiment of the present invention will be described with reference to the accompanying drawings. For convenience of explanation, a fire damper device installed in the ventilation hole of the transformer room will be described as an example. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

Further, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a perspective view schematically showing a fire-fighting damper device according to an embodiment of the present invention. FIG. 2 is a perspective view schematically showing a state in which a blade according to an embodiment of the present invention is rotated according to a change in a wind direction FIG. 3 is a perspective view illustrating a wing according to an exemplary embodiment of the present invention, FIG. 4 is a perspective view illustrating a rotation control unit according to an exemplary embodiment of the present invention, FIG. 6 is a schematic view illustrating a force generated by the self weight of the wing portion according to the embodiment of the present invention, and FIG. 7 is a view FIG. 8 is a perspective view of a wing according to an embodiment of the present invention; FIG. 8 is a perspective view of a wing according to an embodiment of the present invention, FIG. 10 is a block diagram of a fire damper according to an embodiment of the present invention. FIG. 10 is a block diagram of a fire damper according to an embodiment of the present invention. FIG. to be.

1, 4, and 10, the fire-fighting damper device 1 according to the embodiment of the present invention includes a frame 10, a wing 20, a rotation control unit 30, A sensing unit 62, a control unit 64, a driving unit 66, and an angle measurement sensor 70. The sensing unit 62 includes a sensing unit 62, a control unit 64, a driving unit 66,

When the fire damper device 1 is operated in a mode for guiding the inflow of outside air, no separate power or control device for switching the direction of the wing 20 is used. In addition, since the fire-fighting damper device 1 is rotated along the outer wind direction and is self-aligned, the natural ventilation amount due to the inflow of outside air is maximized, thereby lowering the temperature of the transformer main body.

The fire-fighting damper device 1 according to the embodiment is installed in the ventilation holes of the transformer room of the land and sea substations, and functions to lower the temperature of the transformer main body by introducing outside air and to prevent diffusion of fire when closed.

The frame portion 10 forms an inner space 12 and is formed into a frame shape. The frame part 10 according to an embodiment is formed in a rectangular frame shape and a plurality of wing parts 20 are installed along the frame part 10 in the vertical direction.

A wing portion 20 is provided in a horizontal direction inside the frame portion 10 and the number of wing portions 20 is set in consideration of the installation place and the size of the frame portion 10. [

As shown in FIGS. 2 and 3, the wing portion 20 is rotatably installed in the frame portion 10, and may be formed in various shapes within a technical concept in which the position is changed according to the external wind direction. The wing portion 20 according to one embodiment includes a front wing 22, a rotation shaft 24, and a rear wing 27. [

3) of the rotary shaft 24 opposite to the front blades 22 and extends to the other side (reference right side in FIG. 3) of the rotary shaft 24. The front blades 22 extend to one side do. In other words, the front blades 22 extend in the direction toward the outdoors from the rotary shaft 24, and the rear blades 27 extend in the direction toward the room from the rotary shaft 24.

The front wing 22 and the rear wing 27 are formed to have different thicknesses and at least one of the wing portions 20 of the wing portions 20 rotatably installed on the frame portion 10 is provided with a gear And the second gear member 25 is connected to the rotation regulating portion 30. [

As shown in FIG. 6, the cross section of the wing portion 20 is simplified in two dimensions in order to match the center of gravity of the wing portion 20 with the center of rotation so as to eliminate moment due to its own weight.

The front and rear ends of the wing portion 20 have different thicknesses so that the influence of the self-weight of the aerodynamic force induced in the wing portion 20 is removed.

wt is a load due to the weight of the rear blade 27, wl is a load due to the weight of the front blades 22, and rf is a reaction force at the center point. In order for the moment due to the weight of the wing 20 to be zero, the sum of the moments calculated at the center of rotation, which is the center of the rotary shaft 24, must be zero. The center of the rotary shaft 24 may be referred to as a center point, the center of gravity of the blade 20, and the center of rotation. The distance between the load wl due to the weight of the front blades 22 and the rotational axis 24 is set to dt and the distance between the load wl due to the weight of the rear blades 27 and the rotational axis 24 is dl .

In order for the sum of the moments to be zero on the rotary shaft 24, the product of wl and dt is equal to the product of wl and dl. At this time, the first length L1, which is the distance from the end of the front wing 22 to the rotation axis 24, the second length L2, which is the distance from the end of the rear wing 27 to the rotation axis 24, The second thickness T2, which is the thickness of the blade 27, is determined according to the design standards and specifications of the fire-fighting damper device 1. [

Therefore, the values of L1, L2 and T2 can be known, so that the values of wt, dt and dl can be known, and the value of wl can also be obtained by using the moment equation. It is possible to calculate the first thickness T1 which is the thickness of the front wing 22 by calculating that the first length L1 and the length L3 of the front wing 22 are equal to each other.

The length and thickness of the front blades 22 and the rear blades 27 can be designed through these calculation equations. That is, the thickness ratio of the front blades 22 and the rear blades 27 is determined by applying the principle of aerodynamic design.

The first length L1 that is the distance from the end of the front wing 22 to the rotational axis 24 according to one embodiment is the second length L2 that is the distance from the end of the rear wing 27 to the rotational axis 24, And the first thickness T1 which is the thickness of the front wing 22 is formed different from the second thickness T2 which is the thickness of the rear wing 27. [ Preferably, the second length L2 is longer than the first length L1 and the second thickness T2 is smaller than the first thickness T1.

Since the center of gravity of the wing portion 20 and the center of rotation of the wing portion 20 coincide with each other, the wing portion 20 can be rotated according to the wind direction. The center of gravity and the center of rotation of the wing portion 20 coincide with the center of the rotary shaft 24.

As shown in FIG. 8, when the wind is blown to the upper left room, lifting force and drag force are generated at the center point of the wing portion 20, and the vector sum of the two forces finally acts on the wing portion 20 It becomes a force. At this time, it is necessary to match the center of gravity of the wing portion 20 with the center of rotation so as to eliminate an unnecessary moment due to the mismatch between the centers.

When the wind is blowing to the upper left room of the wing in a state where the wing 20 is horizontally installed, the final aerodynamic sum, which is the sum of the lift and the drag component, rotates the wing 20 in the clockwise direction. When the wing portion 20 is rotated in the clockwise direction to coincide with the direction of the wind, the lift component becomes zero so that the wing portion 20 is fixed in the direction coinciding with the wind without any further rotation.

Even if the direction of the wind is the lower left, the wing 20 operates in the same manner as described above and is fixed in the direction coinciding with the wind.

2 and 4 and 5, the rotation regulating portion 30 is fixed to the frame portion 10 and elastically presses the rotation shaft 24 of the wing portion 20, so that the rotation of the wing portion 20 Various adjustments can be used within the concept of controlling the angle and vibration.

The rotation adjusting unit 30 is configured to contact both sides of the rotary shaft 24 of one of the blades 20 of the damper unit 20 to adjust the rotation of the blades 20 in units of a predetermined angle Device. Since the rotation regulating portion 30 is used, the wing portion 20 is prevented from being rotated in response to the external wind direction. If the rotation regulating portion 30 is not provided, the wing portion 20 reacts sensitively to the external wind direction and rotates. Therefore, the flow of the outside air flowing into the indoor space is scattered to reduce the ventilation amount. The rotation regulating portion 30 according to one embodiment includes a housing member 32, a pressing member 34, and a torque transmitting member 36.

The housing member 32 is fixed to the frame portion 10 facing the rotation shaft 24. The housing member 32 is formed in a cylindrical shape, and the housing member 32 is fixed to the side surface of the frame portion 10.

The pressing member 34 is located inside the housing member 32 and forms a pressing force toward the rotating shaft 24. [ The pressing member 34 according to one embodiment uses a coil spring and is installed inside the housing member 32 to press the torque transmitting member 36 in a direction in contact with the wing 20.

The torque transmitting member 36 is located between the pressing member 34 and the rotary shaft 24 and meshes with the end of the rotary shaft 24 so that the rotation of the wing 20 is restricted until the set external force is transmitted. The torque transmitting member 36 according to one embodiment includes a transmitting body 37 inserted into the housing member 32 and one side of which is elastically supported by a pressing member 34, 24, and a gear engaged with the rotation shaft 24 projects in a circumferential direction.

The transfer body 37 is inserted into the housing member 32 so as to be movable in the longitudinal direction of the housing member 32 (left and right direction in FIG. 4). One end of the transfer body 37 facing the pressing member 34 is closed and the other side of the transfer body 37 facing the rotating shaft 24 is opened.

The first gear member 38 is formed on the other side of the transfer body 37 and forms a threaded gear. Since the second gear member 25 having a concave and convex shape engaging with the first gear member 38 is provided at the end of the rotating shaft 24 facing the first gear member 38, The two gear members 25 are engaged with each other.

The rotation adjusting unit 30 is provided on both sides of the rotation axis 24 of the wing unit 20 to control the rotation of the wing unit 20. The rotation adjusting unit 30 may be provided on only one side of the rotation axis 24, And the like can be installed.

The rotation regulating unit 30 rotates the wing 20 in a minimum rotation angle unit such as 10 degrees, 20 degrees, and 30 degrees. Further, the torque generated by the tension of the pressing member 34 is transmitted to the second gear member 25 of the wing portion 20, thereby preventing the wing portion 20 from being shaken unnecessarily.

When the moment due to the aerodynamic force acting on the wing portion 20 is larger than the force that the urging member 34 and the first gear member 38 of the rotation regulating portion 30 engage with the second gear member 25 Only the wing portion 20 can rotate, and when the wing portion 20 is small, the wing portion 20 can not rotate. Accordingly, the wing portion 20 may be prevented from unnecessarily swinging due to a slight external change in the wind direction.

The guide portion 40 prevents the torque transmitting member 36 from being deviated to the outside of the housing member 32 and can be formed in various shapes within a predetermined range of a technical idea provided to be movable in the longitudinal direction of the housing member 32 . The guide portion 40 according to one embodiment includes a guide projection 42 projecting outward from the side surface of the torque transmitting member 36 and a guide projection 42 which forms a long hole in the longitudinal direction of the housing member 32, And a guide hole portion 44 into which the guide portion 42 is inserted.

The guide projection 42 is moved together with the torque transmitting member 36 and the guide projection 42 contacts the guide hole 44 to prevent the torque transmitting member 36 from being displaced to the outside of the housing member 32 .

As shown in FIGS. 1 and 2, the connecting member 50 connects the plurality of wing portions 20 and unifies the rotation angle of the wing portion 20. The connecting member 50 is connected to the edge portion of the wing portion 20 to limit the movement so that all the wings can rotate at the same time. As the connecting member 50, various members such as tie rods and rigid rods may be used.

As shown in FIGS. 1 and 10, the fire detection sensor 60, the sensing member 62, and the angle measurement sensor 70 transmit measurement values to the control unit 64. The control unit 64 operates the driving unit 66 to turn the wing unit 20 to block the inner space 12 of the frame unit 10 when a fire occurs.

The sensing member 62 is mounted on the frame portion 10 and touches the wing portion 20 that shields the inner space 12 of the frame portion 10 to perform a sensing operation.

The driving unit 66 is connected to the rotating shaft 24 of the wing unit 20 where the rotation adjusting unit 30 is not provided and supplies rotational power by the electric power supply. The driving unit 66 is operated by a control signal of the control unit 64 and rotates the wing unit 20 at a predetermined angle.

As shown in FIG. 4, various types of sensors may be used in the angle measuring sensor 70 in the art for measuring the angle of rotation of the wing 20. The angle measuring sensor 70 according to the embodiment is installed at the end of the housing member 32 facing the rotating shaft 24 and the measured member 75 whose measurement is made by the angle measuring sensor 70 is mounted on the second Is provided outside the gear member (25). The measured member 75 according to one embodiment is a magnet and is rotated together with the rotation axis 24. [ The angle measurement sensor 70 detects the rotation of the measured member 75 having magnetism and transmits the measured value to the control unit 64.

Hereinafter, an operating state of the fire-fighting damper device 1 according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 and 7, when the external wind direction is the horizontal direction, the wing portion 20 is moved in the horizontal direction coinciding with the external wind direction.

Or when the external wind direction is inclined from the lower side to the upper side as shown in Figs. 2 and 8, the wing portion 20 moves in an inclined direction corresponding to the external wind direction.

The fire-fighting damper device 1 can self-align itself to the outside wind without using electric power, thereby maximizing the natural ventilation by the inflow of outside air, thereby lowering the temperature of the transformer main body.

9, when the external wind speed is 3.5 m / s, 10 m / s, 17 m / s, and 25 m / s, the damper unit 20 is moved in accordance with the wind direction, And the damper whose direction of the blade is fixed regardless of the external wind direction is set as a conventional damper.

As a result of calculating the ventilation amount by calculating the ventilation amount at each external wind speed, the self-aligned damper can secure natural ventilation twice or more as compared with the existing damper.

In the case where the natural ventilation amount is greatly increased, the necessity of introducing the cooling fan for forced ventilation is reduced, so that the introduction of the facility and the maintenance cost can be greatly reduced. In case of marine substations, ventilation area can be designed to be small so that facilities installed in the room such as transformer can be protected from external environment. In addition, since the surface temperature of the transformer decreases as the amount of ventilation increases, it is possible to prevent the transformer from overheating, thereby securing the reliability of the facility operation.

The most significant feature of the fire-fighting damper device 1 according to the present invention is that the wing portion 20, which is a damper, is aligned with the external wind direction to maximize the inflow of the wind direction.

As described above, according to the present invention, since the wings 20 are rotated by themselves in accordance with the direction of the external wind direction, the directions of the wind direction and the blades are matched with each other, Cost and maintenance costs.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined by the appended claims. will be. Also, a fire damper device installed in a ventilation hole of a transformer room has been described as an example, but the fire damper device of the present invention can be applied to a fire damper installed in another place. Accordingly, the true scope of the present invention should be determined by the following claims.

1: fire damper device 10: frame part
12: inner space 20: wing portion
22: front blades 24:
25: second gear member 27: rear wing
30: rotation regulating portion 32: housing member
34: pressing member 36: torque transmitting member
37: transmission body 38: first gear member
40: guide portion 42: guide projection
44: guide hole portion 50: connecting member
60: fire detection sensor 62: sensing member
64: control unit 66:
70: Angle measuring sensor 75: Measured member
L1: first length L2: second length T1: first thickness T2: second thickness
wl: Load due to self weight of front wing
wt: Load due to self weight of rear wing
rf: reaction force at center point

Claims

A frame portion forming an inner space;
A wing portion rotatably installed on the frame portion and having a variable position according to an external wind direction; And
And a rotation control unit fixed to the frame unit and elastically pressing the rotation axis of the blade unit.

The method according to claim 1,
Wherein the frame portion is formed in a rectangular frame shape,
Wherein a plurality of the wing portions are installed along the frame portion.

3. The method of claim 2,
Further comprising: a connecting member connecting the plurality of wing portions to unify the rotational angle of the wing portion.

The method according to claim 1,
The wing portion includes a front wing extending to one side of the rotation shaft; And
And a rear blade extending to the other side of the rotating shaft opposite to the front blade.

5. The method of claim 4,
Wherein the first length, which is the distance from the end of the front wing to the rotation axis, is different from the second length which is the distance from the end of the rear wing to the rotation axis,
Wherein the first thickness of the front wing is different from the second thickness of the rear wing.

6. The method of claim 5,
Wherein the second length is longer than the first length and the second thickness is smaller than the first thickness.

5. The method of claim 4,
Wherein the center of gravity of the wing portion and the center of rotation of the wing portion coincide with each other.

The method according to claim 1,
The rotation adjusting unit includes: a housing member fixed to a frame portion facing the rotation shaft;
A pressing member located inside the housing member and forming a pressing force toward the rotating shaft; And
And a torque transmitting member located between the pressing member and the rotating shaft and engaged with an end of the rotating shaft.

9. The method of claim 8,
Wherein the torque transmitting member includes: a transmitting body inserted into the housing member and having one side elastically supported by the pressing member; And
And a first gear member extending from the transmission body toward the rotary shaft and having a gear engaged with the rotary shaft projecting in a circumferential direction.

10. The method of claim 9,
And a second gear member having a concave-convex shape engaging with the first gear member is provided at an end of the rotating shaft facing the first gear member.