KR20020004678A - Device for prohibit cable overheating - Google Patents

Abstract

PURPOSE: A radiating device for a communication cable is provided to radiate simply heat generated from interior of the cable toward a ground or underground using a heating pipe having heat transfer medium, and to be simply constructed with a simple structure. CONSTITUTION: A main body(12) comprises a base(B) lengthwise extended within a communication cable(30) under which a plurality of source lines(32) are mounted, and a hollow part(14) in which heat transfer medium is filled. A plurality of radiation fins(16) have a radiation part(18) which the heat transfer medium heated through the hollow part(14) is input to, and are formed integrally over the main body(12). Further, a cooling fan(20) may be installed over the main body.

Description

Heat sink for communication cable {DEVICE FOR PROHIBIT CABLE OVERHEATING}

The present invention relates to a heat dissipation device for a communication cable, and more particularly, to a heat dissipation device for a communication cable that can be naturally cooled to prevent overheating in the cable by releasing high-temperature heat generated from the communication cable to the ground or underground. It is about.

In the case of telecommunication cables buried in the ground or underground cavity, high temperature heat is generated from a number of built-in power lines. Korean Patent Laid-Open Publication No. 2000-408 has a coaxial type structure that can reduce inductance and impedance of a cable by constructing a hollow tube at the center to efficiently dissipate heat generated inside the cable and constructing the conductor concentrically. A power distribution cable is disclosed.

In the configuration of the power distribution cable disclosed in the above publication, a hollow tube located at the center, an inner covering layer surrounding the hollow tube, a plurality of conductor layers and insulating layers having the inner covering layer repeated coaxially on the outer circumferential surface, and And an outer coating layer for protecting and insulating the conductor layer and the insulating layer from the outside, and having a structure of suppressing the temperature rise of the distribution cable by forcibly circulating cold air through a hollow tube provided in the center of the cable.

In the case of a conventional coaxial distribution cable having such a configuration, a hollow tube made of a polyolefin-based material must be separately installed for heat dissipation, thereby increasing the overall thickness of the cable, and continuously blowing a blower to blow cold air into the hollow tube. Power consumption is disadvantageous because of cooling by operation.

The present invention for solving the above problems is to provide a heat dissipation device for a communication cable of a simple structure capable of discharging high temperature heat generated in the cable to the ground or underground by using a heating pipe in which a heat transfer medium is embedded. There is a purpose.

1 is a perspective view showing the configuration of a heat radiation device for a communication cable according to an embodiment of the present invention;

2 is a cross-sectional view showing an installation state of the heat dissipation device for a communication cable shown in FIG.

3 is a cross-sectional view showing an installation state of a heat dissipation device for a communication cable according to another embodiment of the present invention;

Figure 4 is a perspective view showing the configuration of a heat radiation device for a communication cable according to another embodiment of the present invention,

5 is a cross-sectional view showing an installation state of the heat dissipation device for a communication cable shown in FIG.

♣ Explanation of symbols for main part of drawing ♣

10: heating pipe 12: main body

14: hollow part 16: heat radiation fin

18: heat dissipation part 20: heat dissipation fan

30: communication cable 32: power line

50, 52: support 54: structure

The heat dissipation device for a communication cable of the present invention for achieving the above object has a base extending in the longitudinal direction in the communication cable in which a plurality of power lines are built in the bottom, the hollow is filled with a heat transfer medium A main body having a portion, and a heat dissipation portion is provided to heat the heat transfer medium heated through the hollow portion is radiated, characterized in that consisting of a plurality of heat radiation fins integrally formed on the upper portion of the body.

Hereinafter, a heat dissipation device for a communication cable according to a preferred embodiment of the present invention with reference to the accompanying drawings will be described in detail.

1 is a perspective view showing a configuration of a communication cable heat dissipation device according to an embodiment of the present invention, Figure 2 is a configuration diagram showing an installation state of the communication cable heat dissipation device shown in FIG.

First, as shown in Figure 1, in the heat dissipation device for a communication cable according to a preferred embodiment of the present invention as an example, the base (B) is provided at the bottom and the "┷" provided with a plurality of heat radiation fins 16 at the top Shaped heating pipe 10 is illustrated. The heating pipe 10 has a hollow portion formed therein, and the hollow portion is a vacuum tube type in which a heat transfer medium is contained. The heat transfer medium uses a liquid having a high thermal conductivity such as water or alcohol, and a gas such as ammonia or a refrigerant. Can also be used. A plurality of protrusions 16a are formed on one side of the heat dissipation fin 16 provided in the upper portion to increase the heat dissipation area. If necessary, these projections 16a may be formed on both sides of the heat dissipation fins 16.

2 shows a state in which the heating pipe 10 according to the present invention is installed in the communication cable 30. For the sake of understanding, the internal structure of the communication cable 30 is shown on one side. As shown here, the communication cable 30 is provided with a plurality of heating pipes 10 at appropriate intervals from each other. In addition, by installing the heat dissipation fan 20 in the upper portion of the heat dissipation fins 16, a larger amount of heat is released through the heat dissipation fins 16. The heat radiating fan 20 may be forcibly rotated by mounting an electric motor, or may be fixed to the upper portion of the main body 10 through the bracket 22 to be rotated in the wind.

Next, a process of discharging heat in the communication cable to the outside by using the heating pipe 10 according to the present invention will be described with reference to FIG. 2.

The main body 12 constituting the heating pipe 10 has a base B, and has a "┷" shape extending vertically upward from the base B. As shown in FIG. Inside the main body 12, a hollow portion 14 containing a heat transfer medium is formed. The hollow part 14 communicates with the heat radiating part 18 formed inside the heat radiating fin 16 of the upper portion, thereby enabling movement of the heat transfer medium. In the present embodiment, the base B constituting the lower end of the main body 12 is embedded in the communication cable 30. The plurality of heat radiation fins 16 forming the upper portion of the heating pipe 10 are exposed to the atmosphere.

In the heating pipe 10 of such a configuration, the heat of high temperature discharged from the power supply line 32 in the communication cable 30 is transferred to the hollow portion 14 of the main body 12 through the base B, whereby The heat transfer medium contained in the portion 14 is heated warmly. The heated heat transfer medium is raised by natural convection in the main body 12, as shown by the arrow P, and diffuses into the heat dissipation unit 18 formed on the upper part of the main body 12.

As such, the heat transferred to the heat dissipation unit 18 is discharged into the atmosphere through the heat dissipation fins 16, thereby lowering the temperature inside the cable.

On the other hand, the heat transfer medium that radiates heat from the heat radiating portion 18 and descends along the arrow Q returns to the base B of the main body 12. In this way, the convection inside the main body 12 continues to dissipate through the heat dissipation fins 16, thereby continuing heat dissipation in the cable 30, thereby preventing overheating of the communication cable 30. . At this time, a greater amount of heat is released as the heat dissipation fan 20 installed on the upper portion of the main body 12 is released, thereby further increasing the heat dissipation effect in the coaxial cable 30.

3 is a cross-sectional view illustrating an installation state of a heat dissipation device for a communication cable according to another embodiment of the present invention. In this embodiment, a structure for discharging heat in the communication cable 30 buried in the underground cavity consisting of the concrete structure 54 into the ground. That is, the heat generated from the communication cable 30 'supported by the vertical support 50 and the horizontal support 52 is discharged to the ground layer 40' through the heating pipe 10 'arranged horizontally. It was.

In the heating pipe 10 'having such a configuration, the heat released from the plurality of power lines 32' contained in the cable 30 'is transferred to the main body 12 and the heat transfer contained in the hollow portion 14. Heat the medium. The heated heat transfer medium is horizontally moved by natural convection in the main body 12, as shown by arrow P ', and diffuses into the heat dissipation portion 18 formed at one end of the main body 12. As shown in FIG.

As such, the heat transferred to the heat dissipation unit 18 is discharged into the atmosphere through the heat dissipation fins 16, thereby lowering the temperature inside the cable.

On the other hand, the heat dissipation unit 18 releases heat and the cooled heat transfer medium descends along the arrow Q 'to return to its original position. In this way, the convection inside the main body 12 continues to dissipate through the heat dissipation fins 16, thereby continuing heat dissipation in the cable 30 'to prevent overheating of the communication cable 30'. Can be.

4 and 5 are cross-sectional views showing a perspective view and an installation state of the communication cable heat dissipation device according to another embodiment of the present invention, respectively. As shown in these figures, the present embodiment is generally similar to the heating pipes shown in FIGS. 1 and 2, except that the lower base structure extends only to one side and has a longer structure.

That is, when the shape of the main body 12 "and the base B 'of the heating pipe 10" is formed, in the present embodiment, instead of the "┷" shape structure described in Figs. The length of the base B 'is formed larger. Therefore, the same effect can be obtained while manufacturing is simple and has a simpler structure. Since the operation principle is the same as described in FIG. 2, the description thereof will be omitted.

In the preferred embodiment of the present invention described above, as a heat dissipating device for a communication cable, a heating pipe having a plurality of rectangular heat dissipating fins is illustrated on the upper side, but a person having ordinary knowledge in the art departs from the technical idea of the present invention. It will be understood that various modifications, changes, additions, and the like can be made without this. For example, instead of a square, the heating pipe or the heat dissipation fin may be configured in a circular or other polygonal shape, and a plurality of heat dissipation fins may be arranged radially at equal intervals around the main body.

According to the present invention described above, by using a heating pipe in which a heat transfer medium is embedded, high-temperature heat generated in a cable can be discharged to the ground or underground, the structure is simple, the construction is easy, operation cost and maintenance The cost of repair is low.

Claims (2)

It has a base (B) extending in the longitudinal direction in the communication cable 30 in which a plurality of power lines 32 are built in the lower portion, and having a hollow portion 14 filled with a heat transfer medium therein. With the body 12, A heat dissipation unit 18 is provided to heat the heat transfer medium heated through the hollow part 14 to radiate heat, and a plurality of heat dissipation fins 16 integrally formed on an upper portion of the main body 12 are provided. Heat dissipation for communication cables. The method of claim 1, Radiating device for a communication cable, characterized in that the cooling fan 20 is installed on the top of the main body (2).