KR101623545B1 - Heat transfer pipe - Google Patents

Abstract

The present invention relates to a heat transfer pipe for heating which supplies electricity to a heating wire to heat a thermal medium around the heating wire to increase a surrounding temperature. According to an embodiment of the present invention, the heat transfer pipe for heating comprises: a pipe to transfer heat to a surrounding area; a heating wire positioned in the pipe and arranged in a longitudinal direction of the pipe; an insulation pipe positioned between an inner wall of the pipe and the heating wire to enclose the heating wire in the longitudinal direction of the heating wire, wherein both ends thereof are opened; a thermal medium which is filled in the pipe and the insulation pipe, and circulates in the pipe and the insulation pipe; a one-side-wall cover which seals a wall on one side of the pipe, and is penetrated by the heating wire; an other-side-wall cover to seal a wall on the other side of the pipe and support the other end of the heating wire; and a power connector which is inserted into the one-side-wall cover, and connects the heating wire penetrating the one-side-wall cover to an external power line.

Description

Heat transfer pipe

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a heat transfer pipe for heating, which supplies electricity to a heat source to heat a heat medium around the heat source to raise the temperature around the heat source.

Demand for building floor heating using electric energy due to rising oil prices is continuously increasing.

"Heat transfer pipe (heating water pipe for heating)" applying Korean traditional floor heating method is implemented by direct underwater heating method in which heating pipe such as water is heated by inserting electric heating line in pipe (XL pipe). Generally, a heat transfer tube used in a boiler supplies electricity to a heat line installed inside a tube, thereby heating a heat medium around the heat ray. The heating tube connects the electric wire for supplying electric power to the hot wire inside the tube from the outside, and the hot wire is installed at one end of the tube.

This direct heating method is a high efficiency electric heating method with a large heating area and a high watt density per unit area. However, due to the pressure generated during the heating process of the heating medium (water) inserted in the pipe (XL pipe), the leakage of the heating medium or JOINT ZONE (CAP) is damaged, a large amount of fire or malfunction is generated.

That is, as shown in Fig. 1, when the hot water pipe is operated, the pressure in the pipe is expanded, so that the heating medium is scraped, the pipe is broken, and the heat insulating coating is damaged.

Korean Patent Publication No. 10-2015-0005884

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to prevent the heat transfer tube and the heat ray from being damaged due to the expansion of the pressure of the heat transfer tube during heating in the heat transfer tube. It is another object of the present invention to provide a means for precisely grasping a leakage point of a heating-use heat transfer pipe.

An embodiment of the present invention relates to a pipe pipe for transferring heat to a peripheral portion; A hot wire disposed inside the pipe pipe and disposed along the longitudinal direction of the pipe pipe; A pipe connection pipe which is positioned between the inner wall of the pipe pipe and the hot wire and is surrounded by the hot wire along the longitudinal direction of the hot wire and is open at both ends; A heating medium which is filled in the interior of the pipe pipe and circulates in the interior of the pipe pipe; A side wall cover enclosing a side wall of the pipe pipe and penetrating the heat pipe; An other side wall cover closing the other side wall of the pipe pipe and supporting the other end of the heat pipe; And a connector inserted into the one sidewall lid, wherein the power connector connects the hot line passing through the one sidewall lid to an external power line.

The material of the flange connection may be a material having a higher elasticity than that of the pipe pipe.

The insulation connection may be a silicon tube.

The hot line may be characterized by two heat lines whose directions of current flow are opposite to each other.

Wherein the external power line includes a first pole power line and a second pole power line, the hot line includes a current inlet line connected to the first pole power line, a current outlet line connected to the second pole power line, And a connection plate connected to the current output line, wherein a current flows into the current input line connected to the first pole power line, and the second plate is connected to the current output line through the connection plate and the current output line, And then flows out to the outside through the pole power line.

The heating wire may be a pair of the heating wire, the current outlet wire, and the connecting plate as one heating wire pair, and at least two pairs of the heating wire pair may be provided inside the insulating wire.

And the currents output from the first pole power supply line are respectively distributed to the current inflow lines of two or more pairs of hot wire pairs connected in parallel.

The heating-use heat transfer pipe may include leakage detection means for detecting a leakage point by detecting a change in resistance value of the outer surface of the pipe pipe.

The leakage detection means includes a first inner plate and a second inner plate each made of a conductive material and spaced apart from the outer surface of the pipe tube, A first outer plate and a second outer plate each made of a conductive material provided outside the pipe tube; A switch provided on the outside of the pipe tube and having one end connected to the first outer plate and the other end connected to the first inner plate and switching whether to connect the first outer plate and the first inner plate electrically; A first conductive line connecting the switch and the first inner plate; And a second conductive line connecting the second outer plate and the second inner plate.

According to the embodiment of the present invention, it is possible to prevent the heat transfer tube and the heat wire from being damaged by expanding the pressure of the heat transfer tube at the time of heating in the heat transfer tube for heating. Further, according to the embodiment of the present invention, it is possible to accurately grasp the leakage point of the heating-use heat transfer pipe.

FIG. 1 is a view showing a heat pipe damaged due to expansion of a heating medium during heating of a conventional heating pipe.
2 is a view showing a heating tube for heating according to an embodiment of the present invention.
FIG. 3 is a view showing a state in which a heating medium is filled in a heating tube according to an embodiment of the present invention. FIG.
FIG. 4 is a view showing a heat transfer tube for heating provided with two strands of heat lines according to an embodiment of the present invention. FIG.
FIG. 5 is a view showing a heating tube for heating provided with four heating wires according to an embodiment of the present invention. FIG.
6 is a view showing a state in which leakage detection means is provided in a heating tube according to an embodiment of the present invention.
FIG. 7 is a view showing a state in which a leakage point is detected in a heating tube embedded in a floor according to an embodiment of the present invention; FIG.
FIG. 8 is a view showing a state in which a first pipe pipe with a first internal plate and a first internal plate is leaked; FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to achieve them, will be apparent from the following detailed description of embodiments thereof taken in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the exemplary embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of the invention to those skilled in the art. And the present invention is only defined by the scope of the claims. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 2 is a view illustrating a heat transfer tube according to an embodiment of the present invention. FIG. 3 is a view illustrating a state in which a heating medium is filled in a heat transfer tube according to an embodiment of the present invention. FIG. 5 is a view illustrating a heating tube for heating provided with four heating wires according to an embodiment of the present invention. FIG. 5 is a view illustrating a heating tube for heating provided with two heating wires according to an embodiment.

The present invention makes it possible to reinforce the insulation and the dielectric strength, which are the greatest disadvantages of conventional heat transfer tubes, by making the heat transfer tubes for heating use double tube structures in which tubes made of high-strength silicon are inserted. Also, since the heat pipe 400 is embedded in the pipe connection pipe 200 inside the pipe pipe 100, the pipe connection pipe 200 can instantaneously heat the internal heating pipe 10 having a minimum volume, Heating is possible.

The heat transfer pipe according to the present invention includes a pipe pipe 100, a heat source 400, a heat exchanger 200, a heating medium 10, a side wall lid 310, a side wall lid 320, ).

The pipe pipe (100) is a column body for transmitting heat to the peripheral part, and an XL pipe (XL pipe) having high thermal conductivity can be used.

The hot wire 400 is located inside the pipe pipe 100 and is disposed along the longitudinal direction of the pipe pipe 100. The heat line 400 serves as a heat resistor, which generates heat by the flow of electric current.

The connection 200 is located between the inner wall of the pipe 100 and the hot wire 400 and is surrounded by the hot wire 400 along the longitudinal direction of the hot wire 400 and is open at both ends. The heat transfer pipe for heating has a double pipe structure with the pipe 200 and the pipe 200 by placing the pipe 200 surrounding the heat pipe 400. Therefore, the temperature of the pipe 100 may rise drastically as the heat ray 400 touches the cutting part of the pipe 100. To prevent this, the heat pipe 400 surrounding the heat pipe 400 is connected to the pipe And has a double pipe structure disposed inside the pipe (100).

In addition, it is preferable that a material having elasticity higher than that of the pipe tube 100 is used as the material of the tube 200. For example, the tube 200 may be formed of a tube of a highly elastic silicone material. have. Therefore, by using a silicone tube excellent in softness and stretchability and excellent in insulation and heat resistance, the inner pressure generated due to the temperature rise can be automatically controlled.

The heating medium 10 is a heating medium that fills the interior of the pipe pipe 100 and the inside of the insulating pipe 200 and circulates inside the pipe pipe 100 and the inside of the insulating pipe 200. In the heating pipe 400, The heat medium is transferred to the pipe pipe 100 by heating the heat medium. As the heating medium 10, water may be used, and various other media may be used. Further, the heating medium 10 may be filled in the entire inner space of the pipe pipe 100, or only a part of the inner space of the pipe pipe 100 may be filled. It is possible to reduce the filling amount of the heating medium 10 (water), thereby increasing the heating efficiency.

2, the heating medium 10 circulates the inside of the pipe 200 and the inside of the pipe 100 to improve the thermal conductivity, . That is, the heating medium 10 inside the insulating tube 200 is heated and circulated between the insulating tube 200 and the pipe tube 100, so that the heating ability of the pipe tube 100 can be improved.

When the heating wire 400 generates heat in the sealed XL tube, bubbles are generated and collected at the upper part of the tube. At this time, when the temperature difference between the liquid and the gas becomes 10 ° C or more due to internal pressure, the nucleate boiling ). As a result, the bottom temperature rises within a short period of time and the latent heat is lengthened to obtain high-efficiency heat energy. That is, when heat is applied in a closed space, a temperature increase effect of 30 ° C or more can be obtained. Therefore, by having the dual pipe structure of the pipe pipe 100 of the present invention and the highly flexible insulation pipe 200, it is possible to utilize the heat pipe of the high temperature vapor pressure by heating in the insulation pipe 200 having excellent elasticity, insulation and heat resistance The heat exchanger (200) is filled with a heating medium (10) (water) outside the heat exchanger (200), thereby enabling high efficiency heating that enables circulation of heat and cooling.

The other side wall opposite to the one side wall of the pipe pipe 100 is sealed by the side wall lid 310 and the other side wall lid 320 so that the heating medium 10 filled in the pipe pipe 100 So that the inside of the pipe tube 100 is kept charged.

One side wall lid 310 seals one side wall of the pipe pipe 100 and the other side wall lid 320 seals the other side wall of the pipe pipe 100 and supports the other end of the heat pipe 400.

The side wall cover 310 seals one side wall of the pipe pipe 100, and the heat pipe 400 is penetrated. The one side wall lid 310 seals one side wall of the pipe pipe 100 and has one or more through holes 400 formed therein so that one end of the heat ray 400 passes through the through hole 400, (Not shown). One end of the hot wire 400 passing through the through hole (not shown) of the hot wire 400 and positioned outside the pipe tube 100 is connected to the external power supply lines C1, C2, C3, and C4 provided outside .

Particularly, in order to maintain the hermeticity of the side wall lid 310, an enclosure such as a sealing agent or an o-ring is placed around the heat line 400 passing through the through hole of the heat line 400, It is possible to prevent the heat medium 10 from leaking to the outside.

The power connector 301 is a connector inserted into the side wall lid 310 and connects the heat line 400 penetrating the side wall lid 310 to the external power lines C1, C2, C3, and C4. Therefore, the current supplied from the external power supply lines C1, C2, C3, and C4 is supplied to the heat line 400 inside the pipe pipe 100, so that the heat line 400 can be heated.

In order to minimize the electromagnetic field that may be generated when a current flows in the heat line 400, the heat line 400 may be implemented by two heat lines 400 whose directions of current flow are opposite to each other. That is, the heat pipe 400, which is separated into two strands and into which the current flows, and the heat pipe 400, which is discharged from the electric current, can be provided inside the pipe pipe 100.

4, when the external power lines C1, C2, C3, and C4 are provided as the first pole power line C1 and the second pole power line C2, A current flowing line 411 connected to the first pole power line C1 and a current flowing line 412 connected to the second pole power line C2 and a current flowing line 411 connected to the current flowing line 411 and the current flowing line 412 A current is introduced into the current inflow line 411 connected to the first pole power supply line C1 and connected to the connection plate 410 and the current outflow line 412 in order, And then flows out to the external power source through the second pole power line C2 connected to the current outlet line 412. [

Therefore, the current inflow line 411 and the current outflow line 412, which are two heating lines whose currents are opposite to each other, are equal in amplitude and wavelength and opposite in polarity to the electromagnetic wave generated in the current inflow line 411 as current It is possible to implement a muffler-type heat transfer tube for heating that suppresses the generation of an electromagnetic field by canceling by the wavelength of the electromagnetic field generated at the outflow line 412.

On the other hand, in most of the heat transfer tubes for heating, the heating line 400 of a small number (over one to two strands of the heating line 400) to which an overcurrent is applied is discharged at a high temperature (for example, There is a problem that is caused by overtaking.

In order to solve this problem, in the present invention, by dividing the heat amount of about 40 W, which has been allocated to the existing 1-2 strands, into four strands, the heat quantity of one strand is reduced from about 20 W to about 10 W, And the problem of melting the pipe pipe 100 can be fundamentally solved.

5, the current line 411, the current outlet line 412, and the connecting plate 410 are formed into a single pair of heat line pairs, At least two pairs are provided inside the association 200. For example, a first current inlet line 411, a first current outlet line 412, and a first connecting plate 410 are provided in a first heat line combination pair, and a second current inlet A line 421, a second current outlet line 422, and a second connection plate 420 are provided.

The first current input line 411 and the second current input line 421 are connected to the same first pole power supply line C1. Therefore, the currents output from the first pole power supply line C1 can be distributed to the current inflow lines 411 of two or more pairs of hot-wire pairs connected in parallel, respectively. Accordingly, the current output from the first pole power supply line C1 is distributed to the first current input line 411 and the second current input line 421, respectively, so that the heat quantity of one strand of the heating line 400 can be reduced have.

On the other hand, a leakage phenomenon may occur in which the heating medium 10 in the pipe pipe 100 flows out to the outside due to a reason that the pipe pipe 100 is lost in the heating heat pipe. In general, since heating tubes are buried in strata or on separate mats, it is almost impossible to grasp leaking points when leaks occur.

In order to easily grasp the leak point, the heating tube according to the present invention includes leak detection means for detecting a leak point by detecting a change in resistance value of the outer surface of the pipe tube 100. [ When a point in the outer surface of the pipe pipe 100 where a change in resistance value is larger than a set threshold value is found, the point can be determined as a leak point. The heating medium 10 having a liquid component such as water has a characteristic of being electrically conductive so that when the heating medium 10 leaks to the outside of the pipe pipe 100, . 6 to 8 will be described below in detail.

FIG. 6 is a view showing a state in which leakage detection means is provided in a heating-use heat transfer pipe according to an embodiment of the present invention. FIG. 7 is a diagram showing a state in which a leakage point is detected in a heat transfer pipe embedded in the floor according to an embodiment of the present invention. And FIG. 8 is a view showing a leakage of the first pipe pipe provided with the 1-1 inner plate and the 1-2 inner plate.

The leakage detection means detects a leakage point by detecting a change in resistance value of the outer surface of the pipe pipe 100. To this end, the leakage detection means includes a first inner plate 510, a second inner plate 520, A first conductive line L1, a second conductive line L2, and a switch S2. The first conductive line P1, the second external plate P2, the first conductive line L1, the second conductive line L2,

The first inner plate 510 and the second inner plate 520 are provided on the outer surface of the pipe pipe 100 at intervals, respectively. The first inner plate 510 and the second inner plate 520 are implemented as conductors of a conductive material through which electric current can pass.

When the pipe pipe 100 is arranged as shown in FIG. 7, the first inner plate 510 and the second inner plate 520 are arranged at regular intervals in the tree of the pipe pipes 100, respectively. For example, the first pipe pipe 100a is provided with a first inner plate 510a and a first inner pipe 520a, and the second pipe pipe 100b is provided with a second inner pipe plate And an N-1 inner plate 510n and an N-2 inner plate 520n are provided in the N-th pipe pipe 100n. Here, the first pipe 100a, the second pipe 100b, and the Nth pipe 100 are connected to each other and refer to the pipe 100 arranged in the same direction.

The first outer plate P1 and the second outer plate P2 are electrode plates of a conductive material provided outside the pipe tube 100, respectively.

The first conductive line L1 connects the switch S2 and each first inner plate 510 so that a current can flow between the switch S2 and the first inner plate 510. [

The second conductive line L2 connects the second outer plate P2 and the second inner plate 520 so that a current can flow between the second outer plate P2 and the second inner plate 520 .

The switch S2 is provided outside the pipe 100 and has one end connected to the first outer plate P1 and the other end connected to the first inner plate 510. The switch S2 is connected to the first outer plate P1, And switches whether to connect the inner plate 510 electrically.

Accordingly, the leakage meter controls the switch S2 so that the first outer plate P1 and the second outer plate P2 are connected to the first inner plate 510 and the second inner plate 520 of the pipe pipe 100, Respectively. For example, by controlling the switch S2, the first outer plate P1 is connected to the first inner plate 510a provided in the first pipe 100a, The outer plate P2 can be connected to the first inner pipe 520a provided in the first pipe 100a. Similarly, by controlling the switch S2, the first outer plate P1 is connected to the second inner plate 510b provided in the second pipe pipe 100b, and the second outer plate P2 is connected to the second pipe And may be connected to the 2-2 inner plate 520b provided in the pipe 100b.

Therefore, the manager who performs the leakage meter measurement contacts the measuring terminal of the resistance measuring instrument with the first outer plate P1 and the second outer plate P2 and adjusts the switch S2 so that the first outer plate P1 and the second outer plate P2 2 The resistance between the outer plates P2 can be measured.

8, if the first pipe 100a having the first 1-1 inner plate 510a and the 1-2 first inner plate 520a is leaked, the first 1-1 inner plate 510a The heat medium 10 leaking from the first pipe 100a is present on the outer surface of the first pipe 100a between the first inner pipe 510a and the first inner pipe 520a, The first outer plate P1 connected to the first inner plate 510a by the first conductive line L1 and the second outer plate P1 connected to the second inner plate 520a by the first conductive line L1, The electrical resistance between the inner plate and the second outer plate P2 connected by the second conductive line L2 is reduced below a meaningful threshold value so that the heating medium 10 is discharged from the first pipe 100a You will notice that it has leaked.

The embodiments of the present invention described above are selected and presented in order to facilitate the understanding of those skilled in the art from a variety of possible examples. The technical idea of the present invention is not necessarily limited to or limited to these embodiments Various changes, modifications, and other equivalent embodiments are possible without departing from the spirit of the present invention.

100: pipe pipe 200: insulation connection
310: one side wall cover 320: another side wall cover
400: Heat line 10: Heat storage medium

Claims (9)

A pipe tube for transferring heat to the periphery;
A hot wire disposed inside the pipe pipe and disposed along the longitudinal direction of the pipe pipe;
A pipe connection pipe which is positioned between the inner wall of the pipe pipe and the hot wire and is surrounded by the hot wire along the longitudinal direction of the hot wire and is open at both ends;
A heating medium which is filled in the interior of the pipe pipe and circulates in the interior of the pipe pipe;
A side wall cover enclosing a side wall of the pipe pipe and penetrating the heat pipe;
An other side wall cover closing the other side wall of the pipe pipe and supporting the other end of the heat pipe; And
A connector inserted into the one sidewall lid, the connector comprising: a power connector for connecting a hot line passing through the one sidewall lid to an external power line;
.
The method according to claim 1,
Wherein the material of the flange connection is a material having a higher elasticity than the elasticity of the pipe tube.
The method of claim 2,
Wherein the heat transfer tube is a silicon tube.
[2] The method according to claim 1,
Wherein the heat transfer tubes are formed by two heat lines whose directions of current flow are opposite to each other.
The method of claim 4,
Wherein the external power line includes a first pole power line and a second pole power line,
The heating wire includes a current inflow line connected to the first pole power line, a current outline connected to the second pole power line, and a connecting plate made of a conductive material for connecting the current inflow line and the current outflow line,
Wherein a current flows into the current inflow line connected to the first pole power line and flows out through the second pole power line connected to the current outflow line through the connecting plate and the current outflow line in order.
The method of claim 5,
Wherein the heat line is formed by a pair of heat input lines, a current output line, and a connection plate as one pair of heat line combinations, and at least two pairs of the heat line combination pairs are provided inside the insulation.
The method of claim 6,
Wherein a current output from the first pole power line is divided and introduced into two or more current input lines of two or more pairs of heating wires connected in parallel.
The heat transfer tube according to claim 1,
And leak detection means for detecting a leak point by detecting a change in resistance value of the outer surface of the pipe tube.
The water treatment system according to claim 8,
A first inner plate and a second inner plate each made of a conductive material and spaced apart from the outer surface of the pipe pipe;
A first outer plate and a second outer plate each made of a conductive material provided outside the pipe tube;
A switch provided on the outside of the pipe tube and having one end connected to the first outer plate and the other end connected to the first inner plate and switching whether to connect the first outer plate and the first inner plate electrically;
A first conductive line connecting the switch and the first inner plate; And
A second conductive line connecting the second outer plate and the second inner plate;
Wherein the heat transfer tube is a heating tube.

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