KR101407510B1 - Geothermal file and connecting structure of the same - Google Patents

Abstract

The present invention provides a fuel cell system comprising: a main body portion having a plurality of penetrating portions through which groundwater flows into an outer peripheral surface; And an insertion portion connected to the upper and lower sides of the main body portion and having an insertion groove into which the embedding pipe is inserted, wherein the main body portion and the insertion portion are separated and formed by separate members, The present invention relates to a connection structure of a geothermal pile.
The geothermal pile connection structure according to an embodiment of the present invention can maximize the heat exchange efficiency using geothermal heat by having a plurality of penetration portions into which the groundwater flows into the main body portion, It is not necessary to provide a structure capable of allowing the groundwater to flow in and out, so that it is possible to utilize files commonly used in file construction to be buried in the ground. By forming the insertion groove into which the buried pipe can be inserted, There is an effect that it can be easily connected to the connection structure of the underground file.

Description

[0001] GEOTHERMAL FILE AND CONNECTING STRUCTURE OF THE SAME [0002]

TECHNICAL FIELD The present invention relates to a connection structure of a geothermal pile, and more particularly, to a geothermal pile and a connection structure of the geothermal pile for exchanging heat with a heat exchange fluid using geothermal heat underground.

Generally, geothermal heat is distributed in the lower part of the earth's surface, and soils and rocks are heat derived from heat sources such as solar radiation or magma inside the earth.

While the temperature of the atmosphere varies greatly, the temperature of the ground is kept almost constant at 10-20 degrees during the year when the temperature is below 5m. Generally, in summer, the temperature is more than 30 degrees, and in winter, it is generally less than 0 degree. Therefore, in the case of cooling in summer, it is possible to perform efficient cooling with low power consumption by heat exchange using a relatively low-temperature underground heat source, and in the case of heating in winter, efficient heating by using a relatively high- It is possible

Geothermal pile refers to a file that is buried underground where heat is used to recover or discharge heat from underground, using 10 to 20 degrees of heat that is constantly maintained in the basement as a heat source. Geothermal files are also commonly referred to as energy files.

In the case of a conventional geothermal file, in order to produce a geothermal file by utilizing existing files such as a PHC file and a steel pipe file, there is a problem in that the shape of the file is changed to a structure in which groundwater can flow in and out from the files.

PHC files and steel pipe files are mainly used for geothermal files, and these files are often short in length when the file length is to be extended during construction. When welding is performed through welding joints, welding defects often occur depending on the skill of the welder, and the construction time may be prolonged.

In addition, the conventional pile connection structure has a problem that the heat exchange efficiency is lowered by blocking the flow of groundwater existing in the groundwater layer inside and outside the geothermal heat file.

In addition, in the case of connecting the upper and lower files by fastening with separate bolts and nuts, the connection work is very cumbersome, inefficient, and the labor cost is increased, which may lead to an increase in the construction cost.

The present invention is realized by recognizing at least any one of the requirements or problems occurring in the conventional geothermal pile connection structure.

As one aspect, the present invention aims to provide a connection structure of a geothermal pile having a connection structure of a geothermal pile so that groundwater can flow in and out, thereby maximizing heat exchange efficiency using geothermal heat as a clean energy.

Another object of the present invention is to provide a connection structure of a geothermal pile which has a modular structure for connecting the geothermal files to each other,

As an aspect of the present invention, there is provided a geothermal power generation system for a geothermal power generation system, comprising: a geothermal power generation system including a geothermal power generation facility, And to provide a connection structure of the same.

In accordance with one aspect of the present invention, there is provided a fuel cell system including: a main body having a plurality of through portions through which groundwater flows into an outer peripheral surface; And an insertion portion connected to the upper and lower sides of the main body portion and having an insertion groove into which the embedding pipe is inserted, wherein the main body portion and the insertion portion are separated and formed by separate members, The geothermal pile connection structure comprising:

delete

Preferably, the inserting portion includes a first inserting portion connected to the upper side of the main body portion and having a first inserting groove into which a first buried pipe embedded in the basement is inserted, and a second inserting portion connected to the lower side of the main portion, And a second inserting portion having a second inserting groove into which the second buried tube is inserted.

Preferably, the insert has a cross-sectional area lower than that of the upper portion into which the fill tube is inserted.

Preferably, the insertion portion further includes a step protruding from a lower portion of the inner circumferential surface.

Preferably, the body portion may further include a load strengthening portion for increasing the support load.

Preferably, the load reinforcing portion is provided with a plurality of reinforcing pieces radially, and the through portion is provided in a space between adjacent reinforcing pieces.

 Preferably, the load reinforcing portion may include at least one of a honeycomb structure, a truss structure, and a sandwich structure.

Also, preferably, the main body is provided with a plurality of through holes through which the heat exchange tubes pass.

Preferably, the body portion includes a space portion therein, and the space portion may include a holder portion that holds the heat exchange tube.

Preferably, the main body has a plurality of engaging projections coupled to the inserting portion at a peripheral portion of an upper surface and a lower surface, and the inserting portion has a plurality of engaging projections And may have a groove.

Preferably, the engaging protrusion is formed with a latching head, and the engaging groove is formed in the upper part of the plate surface so that the elongated hole and the circular hole at the lower surface of the plate are continuously formed.

Preferably, the penetrating portion may further include a screen portion for filtering out foreign matter from the groundwater flowing into the penetrating portion.

According to another aspect of the present invention, there is provided a buried pipe embedded in a basement and connected by the connecting structure. And a heat exchange unit provided inside the buried pipe and the connection structure, wherein the heat exchange unit exchanges heat with the groundwater flowing through the penetration part of the connection structure.

As described above, according to the embodiment of the present invention, since the main body of the connection port of the geothermal heat pipe has the plurality of penetration portions into which the ground water flows, it is possible to maximize the heat exchange efficiency using the geothermal heat.

According to an embodiment of the present invention, a modular connection structure for separating and connecting the connecting structure of the geothermal heat pump to the main body and the inserting portion by separate members is formed, thereby facilitating installation.

According to an embodiment of the present invention, it is not necessary to provide a structure capable of allowing the groundwater to flow in and out of the pile used in the geothermal heat file by providing the penetration portion to allow the groundwater to flow in and out of the main body portion. There is an effect that it can utilize the files generally used in the buried file construction.

In addition, according to an embodiment of the present invention, the insertion portion has an insertion groove into which the buried pipe can be inserted, so that the buried pipe can be easily connected to the connection structure of the underground pile.

According to an embodiment of the present invention, the inserting portion further includes a step protruding from the lower portion of the inner circumferential surface, thereby making it possible to sufficiently resist the stress concentration occurring in the load transfer process of the upper structure including the buried pipe and the like It is effective.

According to an embodiment of the present invention, since the main body portion is further provided with the load reinforcing portion, it is possible to reduce the supporting load of the connecting structure of the geothermal pile due to the formation of the penetration portion, There is an effect that it can be reinforced through the strengthening portion.

According to an embodiment of the present invention, the main body portion includes a plurality of through holes or a holder portion having a space portion therein and through which the heat exchange tube penetrates, so that the heat exchange tube provided in the buried tube can be firmly fixed .

According to an embodiment of the present invention, the main body includes coupling protrusions formed with a plurality of locking heads, and the insertion portion includes an elongated hole at an upper portion of the plate surface and a coupling groove formed at a lower portion of the plate surface, Thus, there is an effect that the fastening can be simply performed by inserting the engaging projection into the circular hole of the engaging groove and then rotating the body portion and the inserting portion.

According to an embodiment of the present invention, since the penetrating portion is further provided with a screen portion, there is an effect that foreign substances in the ground water flowing in can be filtered.

1 is a perspective view of a connection structure of a geothermal pile according to an embodiment of the present invention;
2A is a perspective view of a main body according to an embodiment of the present invention;
2B is a sectional view of the main body according to an embodiment of the present invention.
FIG. 3A is a perspective view of an insertion portion according to an embodiment of the present invention; FIG.
3B is a cross-sectional view of an insertion portion according to an embodiment of the present invention.
3C is a bottom perspective view of the insert according to one embodiment of the present invention.
4 is a perspective view illustrating a state where the main body, the insertion portion, and the buried pipe are coupled with each other according to an embodiment of the present invention.
FIG. 5A is an exploded perspective view of an insertion portion and a body portion including a load reinforcing portion according to another embodiment of the present invention; FIG.
5B is a cross-sectional view of a load-strengthening portion according to another embodiment of the present invention.
6 is a view showing a load distribution of a geothermal-pile connection structure according to an embodiment of the present invention.
7 is a front cross-sectional view of a body portion including a holder portion according to an embodiment of the present invention.
8 is a view showing a groundwater layer and a groundwater inflow / outflow path of a geothermal pile.

In order to facilitate understanding of the features of the present invention, a cold water tank according to an embodiment of the present invention will be described in detail.

Hereinafter, exemplary embodiments will be described based on embodiments best suited for understanding the technical characteristics of the present invention, and the technical features of the present invention are not limited by the illustrated embodiments, It is to be understood that the present invention may be implemented as illustrated embodiments. Therefore, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. In order to facilitate understanding of the embodiments to be described below, in the reference numerals shown in the accompanying drawings, among the constituent elements which perform the same function in each embodiment, the related constituent elements are indicated by the same or an extension line number.

Hereinafter, a connection structure 100 of a geothermal file according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7. FIG.

1 to 7, the geothermal connection structure 100 according to an exemplary embodiment of the present invention may include a main body 200 and an inserting unit 300.

The geothermal pile connection structure may have a cylindrical shape, but may have various cross-sectional structures such as a circular shape, a square shape, and a polygonal shape depending on the shape of the file.

In addition, the material of the geothermal pile connection structure can be molded by metal casting or by molding compound new material to improve productivity. The composite new material may be a fiber reinforced composite material (FRP) manufactured by a pultrusion process, and examples thereof include a carbon fiber composite material (CFRP) and a glass fiber composite material (GFRP).

First, a description will be given of a main body 200 provided in the connection structure 100 of a geothermal pile with reference to FIGS. 2A and 2B. The body portion 200 may include a penetration portion 210, a space portion 220 and an engagement protrusion 230. The body portion 200 may include a through hole 223, a holder portion 240, And may additionally comprise.

The main body 200 may be provided at a central portion of the connection structure 100 of the geothermal pile and the insertion portions 300 may be connected to upper and lower sides of the main body 200.

As shown in FIG. 2A, the penetration portion 210 is a portion that allows the underground water in the ground to flow into the geothermal heat file. A plurality of the penetrating portions 210 may be formed along the outer circumferential surface of the side surface of the main body 200 at predetermined intervals. As shown in FIGS. 2A and 2B, the shape of the penetration part 210 may be an elliptical shape that is long in the vertical direction, and may be formed in a shape that becomes narrower toward the back as shown in FIG. 5A .

In addition, the penetration part 210 may further include a screen part 211 for preventing the inflow of the gravel into the buried pipe 400. The screen unit 211 may be provided on both the front and rear surfaces of the space formed by the adjacent reinforcing pieces 251, or on both the front and rear surfaces. Preferably, however, it is preferably provided on the rear surface of the space in consideration of the pressure of the soil part.

5A, the space 220 is provided inside the main body 200 so that the groundwater can flow, and the space 220 has an upper surface 221 and a lower surface 220. [ And the upper surface 221 and the lower surface 222 may be provided with a plurality of through holes 223 through which the heat exchange pipe P can pass or through which groundwater can move.

2A and 2B, the coupling protrusion 230 is formed in the peripheral portion of the upper surface 221 and the lower surface 222 of the main body 200, A plurality of engaging projections 230 engageable with the grooves 330 can be provided and the engaging projections 230 can be protrusions having the engaging head 231 formed therein.

7, the holder unit 240 is installed in a main body 200 having a top and a bottom 222 without a separate upper and lower surfaces 221 and 222, (P).

In addition, the holder 240 may be provided in the form of a clover and a starfish, in which a fitting portion 241 into which the heat exchange pipe P can be inserted is formed.

The holder 240 is a member having elasticity and is inserted into the space 220 of the main body 200 in a state of being reduced by an external force and is extended when the external force is removed, And may be a structure that is compressed and supported on the inner surface.

5A and 5B, the load reinforcing portion 250 is a portion for reinforcing the load supporting force of the body portion 200. The load reinforcing portion 250 includes a plurality of radial reinforcing pieces 251 May be spaced apart from each other by a predetermined distance.

 The load reinforcing part 250 is provided at the peripheral part of the side surface of the main body part 200 and is provided with a plurality of reinforcing pieces 251 radially in the space between the adjacent reinforcing pieces 251, (210). Generally, the geothermal pile connection structure 100 is a member connecting the first buried pipe 410 and the second buried pipe 420 and has a bearing capacity for a constant load such as a compressive force or a shear force. Therefore, when the plurality of penetrations 210 are provided along the outer circumferential surface of the main body 200, the groundwater existing in the groundwater layer can be flowed in and out to increase the heat exchange efficiency of the geothermal pile. However, The load reinforcing portion 250 may be required as the support load reinforcing means.

The load strengthening unit 250 may include various honeycomb structures (honeycomb structures), truss structures, sandwich structures, and the like, which are conventionally used for supporting loads.

For example, the truss structure may have a unit structure in which two triangular wave shapes are vertically connected to each other, and the truss structure may be formed by connecting a plurality of unit structures and arranging them at regular intervals on a plane. Such a truss structure has a structure capable of providing the penetration part 210 while having an effect of improving load bearing capacity.

Since the honeycomb structure (honeycomb structure), the truss structure, and the sandwich structures are implemented by well-known techniques, detailed description of other additional structures and operations will be omitted.

 Next, with reference to FIG. 3A to FIG. 3C, a description will be made of an insertion portion 300 provided in the connection structure 100 of the geothermal heat file. The insertion portion 300 may include an insertion groove 310 and an engagement groove 330 into which the embedded tube 400 is inserted and connected and may further include a step portion 320 .

The insertion portion 300 is a portion into which the buried pipe 400 buried in the ground is inserted. The insertion portions 300 may be connected to the upper and lower sides of the main body 200, respectively. Specifically, the insertion portion 300 may include a first insertion portion 340 connected to the upper side of the main body 200 and a second insertion portion 350 connected to the lower side.

The insertion portion 300 may have a cylindrical shape, but may have various cross-sectional shapes such as circular, square, and polygonal shapes depending on the shape of the buried pipe 400 requiring connection.

The insertion portion 300 may be integrally formed with the body portion 200, and may be a modular structure formed by being separated and formed by separate members. When the insertion portion 300 and the main body 200 are constructed in a modular configuration, it is possible to simplify the connection of the individual members of the connection structure without requiring a light weight and fastening of bolts or the like, Can be obtained.

As shown in FIGS. 3A and 3B, the insertion groove 310 is provided at the distal end of the insertion part 300, and is a part for firmly fixing the tip of the injection tube 400. That is, the inner side surface, the outer side surface, and the distal end surface of one buried pipe 400 can be firmly fixed to the inner three surfaces of the insertion groove 310.

In addition, the insertion groove 310 may have a generally U-shaped cross-section in which the buried pipe 400 is inserted, and may be opened in a direction in which the leading end of the buried pipe 400 is inserted.

6, the first insertion groove 311 may be provided in the first insertion portion 340 coupled to the upper surface 221 of the body portion 200, The groove 312 may be provided in the second insertion portion 350 coupled to the lower surface 222 of the body portion 200.

As shown in FIG. 3A, the step portion 320 may protrude from a lower portion of the inner circumferential surface of the insertion portion 300. In consideration of the stress concentration due to the eccentric force or the like during the load transmission process of the upper structure including the buried pipe 400 and the like, the step portion 320 may have a cross-sectional area lower than that of the upper portion into which the buried pipe is inserted As shown in FIG.

3C and FIG. 5A, the coupling groove 330 is provided at a peripheral portion of the lower surface 222 of the insertion portion 300, Respectively.

The coupling groove 330 may have a long hole 332 at the top of the plate surface and a circular hole 331 at the bottom of the plate surface. The coupling protrusion 230 having the coupling head 231 formed on the main body 200 is inserted into the insertion hole 300 of the insertion hole 300, The main body part 200 and the insertion part 300 are connected to each other by the coupling protrusion 230 being fastened to the elongated hole 332 according to the rotation of the main body part 200 and the insertion part 300, do.

However, the coupling grooves 330 can be variously modified as long as the coupling protrusions 230 can be accommodated. For example, the coupling grooves 330 may have a cylindrical groove shape.

4 and 6, a description will now be made of a buried pipe 400 provided in a geothermal file including a connection structure 100 of a geothermal file.

The buried pipe 400 is connected to the insertion groove 310 of the insertion part 300 and the inner side surface, the outer side surface and the distal end surface of the buried pipe 400 are in close contact with the inner three surfaces of the insertion groove 310 And is firmly fixed. Of course, when additional fixing is required, it is also possible to insert the buried pipe 400 into the insertion groove 310 and then to further weld or fix it by a mold coupling or the like.

In addition, the embedding pipe 400 may be a generally used PHC file and a steel pipe file. Since the length of the buried pipe 400 is short, it is necessary to extend the length of the geothermal pile when the geothermal pile is installed, so that it can be connected by the connection structure 100 of the geothermal pile.

4, the first buried pipe 410 is coupled to the upper part of the connection structure 100 of the geothermal pile and the second buried pipe 420 is coupled to the lower part of the first buried pipe 410 and the second buried pipe 420 may be connected to each other.

Next, a geothermal file having the geothermal file connection structure 100 will be described.

The geothermal power plant includes a buried pipe 400 embedded in the ground and connected by the connection structure of the geothermal power and a heat exchange unit provided in the connection structure 100 between the buried pipe 400 and the geothermal power, The heat exchanger may be provided to exchange heat with the groundwater flowing through the penetration part 210 of the connection structure.

In addition, the geothermal file does not need to have a structure capable of allowing the groundwater to flow in and out of a file used for construction of the geothermal file. Thus, the geothermal file can utilize files generally used in file construction buried in the ground.

Next, a heat exchanging unit provided in the geothermal file including the connection structure 100 of the geothermal pile will be described. The heat exchange unit (not shown) may include a heat pump, a heat exchange pipe P, a heat exchange fluid supply pipe, and a recovery pipe.

The heat exchange pipe (P) may be connected to the heat pump through a heat exchange fluid supply pipe and a return pipe. The heat exchange fluid such as water or antifreeze liquid supplied through the heat exchange fluid supply pipe connected to one end of the heat exchange pipe P is supplied with the geothermal heat while flowing along the heat exchange pipe P and flows into the heat pump through the heat exchange fluid return pipe .

The heat exchange pipe P may have a curved spiral structure so as to have a curvature corresponding to the curvature of the buried pipe 400 so as to be adjacent to the inner circumferential surface of the buried pipe 400 so that the heat exchange fluid meanders the heat exchange fluid As shown in FIG.

However, the heat exchanger is not limited to the heat exchange pipe P in which the heat exchange fluid moves to the inside, the groundwater introduced into the geothermal pile and the heat exchange fluid flowing in the heat exchange pipe P, The groundwater is pumped to the outside of the geothermal heat file by a submerged pump disposed in the geothermal pile and the heat exchange fluid is exchanged with the heat exchange fluid inside the heat exchange pipe P in a separate space outside the geothermal heat file, And may be provided in a form of discharging to the underground outside the file.

Since the heat exchanger using the heat exchange pipe (P) is implemented by a known technology, detailed descriptions of other internal configurations and operations will be omitted.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention, It will be appreciated that those skilled in the art will readily understand the present invention.

The connection structure of geothermal file: 100 Main part: 200
210: penetrating part: 211: screen part:
220: space part: 221: upper surface:
222: lower surface: 223: through hole:
230: engaging projection: 231: engaging head:
240: holder portion: 241: fitting portion:
250: Load strengthening part: 251: Reinforcement piece:
300: Insertion part: 310: Insertion groove:
311: first insertion groove: 312: second insertion groove:
320: Short jaw: 330: Coupling groove:
331: Round hole: 332: Long hole:
340: first insertion portion: 350: second insertion portion:
400: buried pipe: 410: first buried pipe:
420: Second buried pipe: P: Heat exchange pipe: P

Claims (14)

A main body portion having a plurality of penetrating portions through which groundwater flows into the outer circumferential surface; And
And an insertion portion connected to upper and lower sides of the main body portion and having insertion grooves into which the embedding tubes are inserted,
Wherein the main body portion and the insertion portion are separated and formed by separate members, and are then coupled to each other through a modular connection structure.
delete The method according to claim 1,
The insertion portion includes a first insertion portion connected to the upper side of the main body portion and having a first insertion groove into which a first buried pipe embedded in the basement is inserted and a second insertion portion connected to the lower side of the main body portion, And a second insertion portion having a second insertion groove into which the pipe is inserted.
The method according to claim 1,
Wherein a cross-sectional area of the lower portion of the inserting portion is thicker than a cross-sectional area of an upper portion into which the embedding pipe is inserted.
5. The method of claim 4,
Wherein the insertion portion further comprises a stepped portion protruding from a lower portion of the inner circumferential surface.
The method according to claim 1,
Wherein the main body portion further comprises a load reinforcing portion for increasing a support load.
The method according to claim 6,
Wherein the load reinforcing portion is provided with a plurality of reinforcing pieces radially and the penetrating portion is provided in a space between adjacent reinforcing pieces.
The method according to claim 6,
Wherein the load reinforcing portion has at least one of a honeycomb structure, a truss structure, and a sandwich structure.
The method according to claim 1,
Wherein the main body has a plurality of through holes through which the heat exchange tubes pass.
The method according to claim 1,
Wherein the body part further comprises a space part inside and a holder part for holding a heat exchange pipe in the space part.
The method according to claim 1,
Wherein the body portion has a plurality of engaging projections coupled to the insertion portion at a peripheral portion of an upper surface and a lower surface,
Wherein the inserting portion has a plurality of engaging grooves on a peripheral portion of a lower surface thereof, the engaging grooves being engaged with engaging projections of the main body portion.
12. The method of claim 11,
Wherein the engaging projection is formed with a latching head,
Wherein the joining groove has a long hole formed in the upper part of the plate surface and a circular hole formed in the lower part of the plate surface continuously.
The method according to claim 1,
Wherein the penetrating portion is further provided with a screen portion for filtering the foreign matter of groundwater flowing into the penetrating portion.
14. A method of manufacturing a semiconductor device according to any one of claims 1 to 13,
A buried pipe buried underground and connected by a connecting structure; And
And a heat exchange unit provided inside the buried pipe and the connection structure,
Wherein the heat exchange unit exchanges heat with the groundwater flowing through the penetration portion of the connection structure.

Images