KR102605477B1 - Construction Method Of Heat Exchanger Pipe - Google Patents

Abstract

The present invention improves the work efficiency of other processes because there is no PE pipe in the trench section, and at the same time improves economic efficiency by reducing management costs by eliminating the need for management of the PE pipe installed in the trench section. Pertaining to a heat exchanger pipe construction method, the heat exchanger pipe construction method includes: a first step of installing a casing from the ground surface to the lower level of the excavation section, which is the area where excavation will be performed; After installing the casing, a second step of drilling a hole from the lower level of the excavation section to a predetermined depth with a drill; a third step of inserting a heat exchanger pipe through the casing to the bottom of the drilled bore hole; and a fourth step of cutting the heat exchanger pipe so that the end of the heat exchanger pipe is exposed above the ground surface, which is the upper level of the trench section.

Description

Construction Method Of Heat Exchanger Pipe}

The present invention relates to a method of constructing a heat exchanger pipe. More specifically, the present invention relates to a method of constructing a heat exchanger pipe. More specifically, the work efficiency of other processes is improved because there is no PE pipe in the trench section, and at the same time, there is no need to manage the PE pipe installed in the trench section, so management is required. This relates to a heat exchanger pipe construction method implemented to improve economic efficiency by reducing costs.

In general, energy sources used for home and industrial purposes mostly use fossil fuels such as coal, oil, and natural gas, and nuclear fuel is also used to a limited extent. Due to the depletion of fossil fuel reserves, energy costs for heating and cooling are rapidly increasing, and various pollutants generated during the combustion process are polluting the water and air environment. Therefore, in recent years, the development of eco-friendly alternative energy that can replace the fossil fuels is actively underway.

Among these alternative energies, we are actively pursuing alternative energy development projects such as wind power, solar power, and geothermal heat, which are eco-friendly and have infinite energy sources. In particular, in order to obtain energy using wind power and solar power, there are limitations in the installation location and a large area is required. This must be secured, and the installation area is limited because it is affected by weather and wind volume. These devices have a low energy production capacity per unit device and also require high initial investment and maintenance costs. Therefore, many cooling and heating devices using geothermal energy, which require relatively low installation and maintenance costs, have been developed and used. Since they use geothermal energy, a stable heat source that maintains a constant temperature (10 to 20°C) throughout the year, they are an alternative. It is in the spotlight as an energy source and its distribution is expanding. In order to use the geothermal energy, a ground heat exchanger must be installed underground.

Ground heat exchangers can be classified into vertical, horizontal, and energy pile types depending on the method of burying the heat exchange pipes. The vertical type generally has heat exchange pipes with a diameter of 30 to 40 mm buried vertically 100 to 200 m underground. For example, the horizontal type is to bury pipes made of materials such as high-density polyethylene pipes, the horizontal type is to bury them horizontally 1.25m to 1.5m underground, and the energy pile type is to bury heat exchange pipes. This is done by inserting and grouting the inside of hollow piles such as existing PHC piles and steel pipes used as the foundation of a building. Since the heat exchange pipe is buried in the pile that becomes the foundation of the structure, no additional installation location is required, and excavation costs are doubled. It is a method that can reduce construction costs by 30% to 50% as it does not require construction costs, but recently, vertical and energy pile types are mainly used.

Among these, especially in urban areas and densely populated areas where it is difficult to secure a separate drilling site for drilling boreholes, when drilling boreholes in the lower part of the building and installing the heat exchange pipe of the ground heat exchanger at the lower part of the building, conventionally, the tower- In the case of a site constructed using the TOP-DOWN method, after excavating a trench, placing a slab, excavating again, and placing a slab are repeated to excavate to the final floor level, then drilling equipment is installed on the lower floor, and a heat exchange pipe is installed at the starting point of the drilling. Bore holes are drilled for burial, and when bore holes are drilled at the final floor level after top-down excavation is completed, installation of drilling equipment is required due to structures such as earth retaining walls, columns, beams, and trusses. Also, the working space is narrow, so the size of the drilling equipment is limited, and interference with other work processes occurs, making the work progress unsmoothly, making it difficult to meet the timing.

Meanwhile, the above-mentioned background technology is technical information that the inventor possessed for deriving the present invention or acquired in the process of deriving the present invention, and cannot necessarily be said to be known technology disclosed to the general public before filing the application for the present invention. .

Korean Patent No. 10-1140756

One aspect of the present invention is that there is no PE pipe in the trench section, which improves the work efficiency of other processes, and at the same time, there is no need to manage the PE pipe installed in the trench section, thereby improving economic efficiency by reducing management costs. Provides a heat exchanger pipe construction method implemented to enable

The technical problem of the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below.

A heat exchanger pipe construction method according to an embodiment of the present invention includes a first step of installing a casing from the ground surface to the lower level of the trench section, which is the area where trench digging will be performed; After installing the casing, a second step of drilling a hole from the lower level of the excavation section to a predetermined depth with a drill; a third step of inserting a heat exchanger pipe through the casing to the bottom of the drilled bore hole; and a fourth step of cutting the heat exchanger pipe so that the end of the heat exchanger pipe is exposed above the ground surface, which is the upper level of the trench section.

In one embodiment, a heat exchanger pipe construction method according to another embodiment of the present invention includes a fifth step of inserting a backup agent, which is a compressed sponge, into the heat exchanger pipe; A sixth step of sealing the open end of the heat exchanger pipe; A seventh step of installing a connection pipe at each end of the heat exchanger pipe; An eighth step of inserting and installing a jig pipe into each of the connection pipes; A ninth step of fastening each end of the heat exchanger pipe to each other with a fastening device; A tenth step of lowering the heat exchanger pipe through the casing to the bottom of the drilled borehole; An 11th step of performing grouting work from the bottom of the drilled borehole to the lower level of the excavation section after installing the heat exchanger; And a twelfth step of removing the jig pipe and the casing from the trench section.

In one embodiment, the fastening device is formed in a cylindrical shape so that one end and the other end of the heat exchanger pipe exposed above the ground can be seated inside, and the one end and the other end of the heat exchanger pipe are disposed in the left and right directions. A seating frame formed in the shape of an oval with left and right diameters longer than the front and back diameters; a first lowering roller unit on which the seating frame is installed on one side so that it can descend along the inner peripheral surface of the casing; a second lowering roller unit installed on the other side of the seating frame so that it can descend along the inner peripheral surface of the casing; a first pressure roller unit installed at the front end of the seating frame to descend along the inner peripheral surface of the casing; a second pressure roller unit installed at the rear end of the seating frame to descend along the inner peripheral surface of the casing; It is installed inside the seating frame and has a front end connected to the first pressure roller part and a rear end connected to the second pressure roller part, and the first pressure roller part and the second pressure roller part are installed on the inner peripheral surface of the casing. a support link that is in close contact with a support link whose front-to-back length decreases and left-right length increases as the gap between the first pressure roller portion and the second pressure roller portion decreases; It is installed on one side of the support link and supports one end of the heat exchanger pipe disposed on one side of the internal space of the seating frame, and as the left and right lengths of the support link increase, one end of the heat exchanger pipe is attached to the seating frame. A first holder that adheres to one side of the internal space; and is installed on the other side of the support link to support the other end of the heat exchanger pipe disposed on the other side of the internal space of the seating frame, and as the left and right lengths of the support link increase, the other end of the heat exchanger pipe is supported by the seating frame. It may include a second holder that adheres to the other side of the internal space of the.

In one embodiment, the support link includes: a first support whose front end penetrates the front surface of the seating frame and is exposed and installed on the first pressure roller unit; a second support, the rear end of which penetrates the rear of the seating frame and is exposed, and is installed on the second pressure roller unit; A first frame, a second frame, a third frame, and a fourth frame are connected and installed to be foldable with each other in a diamond shape, and the first frame is installed at the connection installation site of the first frame and the second frame disposed at the front end. an intermediate link portion that is connected and installed to enable the rear end of the support to be rotatable, and is connected and installed to allow the front end of the second support to be rotatable at a connection installation site between the third frame and the fourth frame disposed at the rear end; a first support frame rotatably installed between the connection installation portion of the first frame and the fourth frame disposed on one side and the first holder to support the first holder; and a second support frame rotatably installed between the connection installation portion of the second frame and the third frame disposed on the other side and the second holder, respectively, to support the second holder.

In one embodiment, the first pressure roller unit includes: a front housing with one side and the other side bent in a direction perpendicular to the front end and installed at the front end of the seating frame, through which the front end of the first support passes and is inserted; A roller holder supported by the front end of the first support installed at the rear end and seated inside the front end housing; a pressure roller installed at the front of the roller holder and rotating and descending along the inner peripheral surface of the casing; and at least one buffer spring installed along the rear end of the roller holder to support the roller holder and at the same time cushion vibration or shock transmitted from the roller holder.

According to one aspect of the present invention described above, since there is no PE pipe in the trench section, the work efficiency of other processes is improved, and at the same time, there is no need to manage the PE pipe installed in the trench section, thereby reducing management costs and improving economic efficiency. It can provide an effect that can improve.

The effects of the present invention are not limited to the effects mentioned above, and various effects may be included within the scope apparent to those skilled in the art from the contents described below.

1 is a flowchart explaining a heat exchanger pipe construction method according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating the first step of FIG. 1.
FIG. 3 is a diagram illustrating the second and third steps of FIG. 1.
Figure 4 is a flowchart explaining a heat exchanger pipe construction method according to another embodiment of the present invention.
FIG. 5 is a diagram illustrating steps 5 to 9 of FIG. 4 .
FIG. 6 is a diagram illustrating steps 10 and 11 of FIG. 4.
FIG. 7 is a diagram illustrating step 12 of FIG. 4.
FIG. 8 is a diagram showing a fastening device used in step 9 of FIG. 4.
9 to 11 are diagrams showing another embodiment of the fastening device of FIG. 8.
FIG. 12 is a diagram showing the support link of FIG. 11.

The detailed description of the present invention described below refers to the accompanying drawings, which show by way of example specific embodiments in which the present invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different from one another but are not necessarily mutually exclusive. For example, specific shapes, structures and characteristics described herein may be implemented in one embodiment without departing from the spirit and scope of the invention. Additionally, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. Accordingly, the detailed description that follows is not intended to be taken in a limiting sense, and the scope of the invention is limited only by the appended claims, together with all equivalents to what those claims assert, if properly described. Similar reference numbers in the drawings refer to identical or similar functions across various aspects.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.

1 is a flowchart explaining a heat exchanger pipe construction method according to an embodiment of the present invention.

Referring to Figure 1, in the heat exchanger pipe construction method according to an embodiment of the present invention, as shown in Figure 2, the casing 11 is installed from the ground surface to the lower level of the trench section, which is the area where trench digging will be performed. (S110).

After installing the casing 11, drilling is performed from the lower level of the excavation section to a predetermined depth as shown in FIG. 3 using a drilling machine (not shown in the drawing for convenience of explanation) (S120).

Here, the excavation section corresponds to a section 10 to 40 m from the ground surface, and the section by the drilling operation corresponds to a section dug down about 200 m further from the lower level of the excavation section.

As shown in FIG. 3, the heat exchanger pipe 12 (i.e., PE pipe) is inserted through the casing 11 to the bottom of the drilled bore hole (S130).

At this time, the inserted depth M can be checked in the heat exchanger pipe 12, and the depth can be measured using a separately provided penetrometer.

The heat exchanger pipe 12 is cut so that the end of the heat exchanger pipe 12 is exposed above the ground surface, which is the upper level of the trench section (S140).

Figure 4 is a flowchart explaining a heat exchanger pipe construction method according to another embodiment of the present invention.

Referring to Figure 4, in the heat exchanger pipe construction method according to another embodiment of the present invention, as shown in Figure 5, the backup agent 13, which is a compressed sponge, is placed within the heat exchanger pipe 12 cut in step S140 described above. Insert (S150).

As shown in FIG. 5, an end cap (stopper) 16 is fused to the end of the open heat exchanger pipe 12 to seal it (S160).

As shown in FIG. 5, a connection pipe 14 for connecting the heat exchanger pipe 12 and the jig pipe 15 is installed at each end of the heat exchanger pipe 12 (S170).

That is, the connection pipe 14 can protect the end of the heat exchanger pipe 12 and simultaneously perform the function of connecting and disconnecting from the jig pipe 15.

As shown in FIG. 5, the jig pipe 15 is inserted and installed inside each connection pipe 14 (S180).

As shown in FIG. 5, each end of the heat exchanger pipe 12 is fastened to each other using a fastening device 17 (S190).

As shown in FIG. 6, the heat exchanger pipe 12 is lowered through the casing 11 to the bottom of the drilled bore hole (S200).

As shown in FIG. 6, after installing the heat exchanger (not shown in the drawing for convenience of explanation), grouting work 18 is performed from the bottom of the drilled borehole to the lower level of the trench section (S210).

At this time, grouting work will not be able to be performed in the excavation section.

As shown in FIG. 7, the jig pipe 15 is pulled out using a rope, etc., and then the casing 11 is pulled out and removed from the trench section (S220).

The heat exchanger pipe construction method according to another embodiment of the present invention having the configuration described above improves the work efficiency of other processes because there is no PE pipe in the trench section, and at the same time, it is possible to manage the PE pipe installed in the trench section. Since there is no need for it, the cost of management can be reduced and economic efficiency can be improved.

9 to 11 are diagrams showing another embodiment of the fastening device of FIG. 8.

9 to 11, the fastening device 30 according to another embodiment includes a seating frame 100, a first lowering roller unit 200, a second lowering roller unit 300, and a first pressure roller unit. 400, a second pressure roller unit 500, a support link 600, a first holder 700, and a second holder 800.

The seating frame 100 is formed in a cylindrical shape so that one end (12a) and the other end (12b) of the heat exchanger pipe 12 exposed above the ground surface can be seated on the inner side 110, and the heat exchanger pipe 12 ) is formed in an oval shape with left and right diameters longer than the front and rear diameters so that they can be arranged in the left and right directions, and includes a second lowering roller unit 300, a first pressure roller unit 400, Components such as the second pressure roller unit 500, the support link 600, the first holder 700, and the second holder 800 are installed.

A seating frame 100 is installed on one side of the first lowering roller unit 200 so that it can descend along the inner peripheral surface of the casing 11.

A seating frame 100 is installed on the other side of the second lowering roller unit 300 so that it can descend along the inner peripheral surface of the casing 11.

The first pressure roller unit 400 is installed at the front end of the seating frame 100 so that it can descend along the inner peripheral surface of the casing 11.

The second pressure roller unit 500 is installed at the rear end of the seating frame 100 so that it can descend along the inner peripheral surface of the casing 11.

Here, the distance from the end of the first pressure roller unit 400 to the end of the second pressure roller unit 500 should be larger than the inner diameter of the casing 11.

The support link 600 is installed inside the seating frame 100 and has its front end connected to the first pressure roller unit 400 and its rear end connected to the second pressure roller unit 500, and the first pressure roller The unit 400 and the second pressure roller unit 500 are in close contact with the inner peripheral surface of the casing 11, and as the gap between the first pressure roller unit 400 and the second pressure roller unit 500 is reduced, the front-to-back length increases. As the length of the left and right sides increases at the same time as it decreases, the first holder 700 and the second holder 800 are brought into close contact with one end 12a of the heat exchanger pipe 12 and the other end 12b of the heat exchanger pipe 12.

The first holder 700 is installed on one side of the support link 600 and supports one end 12a of the heat exchanger pipe 12 disposed on one side of the inner space of the seating frame 100, and the support link 600 ) As the left and right lengths of the heat exchanger pipe 12 increase, one end 12a of the heat exchanger pipe 12 is brought into close contact with one side of the inner space of the seating frame 100.

The second holder 800 is installed on the other side of the support link 600 and supports the other end 12b of the heat exchanger pipe 12 disposed on the other side of the inner space of the seating frame 100, and the support link 600 ) As the left and right lengths of the heat exchanger pipe 12 increase, the other end 12b of the heat exchanger pipe 12 is brought into close contact with the other side of the internal space of the seating frame 100.

The fastening device 30 according to another embodiment having the above-described configuration can allow the heat exchanger pipe 12 to stably descend along the inside of the casing 11 without damage.

FIG. 12 is a diagram showing the support link of FIG. 11.

Referring to FIG. 12, the support link 600 includes a first support 610, a second support 620, an intermediate link 630, a first support frame 640, and a second support frame 650. Includes.

The first support 610 has a front end that penetrates the front of the seating frame 100 and is exposed and is installed at the rear end of the first pressure roller unit 400, that is, the roller holder 420, and the roller holder 420 is As it comes into close contact with the seating frame 100, it is inserted into the seating frame 100.

The second support 620 has a rear end that penetrates the rear of the seating frame 100 and is exposed and installed on the second pressure roller unit 500, and the second pressure roller unit 500 moves in the direction of the seating frame 100. As it comes into close contact, it is inserted into the seating frame 100.

The middle link portion 630 is formed by connecting the first frame 631, the second frame 632, the third frame 633, and the fourth frame 634 so that they can be folded together in a diamond shape, and the front end The rear end of the first support 610 is rotatably installed at the connection installation site of the first frame 631 and the second frame 632, and the third frame 633 and the fourth frame 633 are disposed at the rear end. The front end of the second support 620 is rotatably installed at the connection installation portion of the frame 634.

That is, the intermediate link unit 630 connects the first frame 631, the second frame 632, the third frame 633, and the fourth frame 634 so that they can rotate with each other as shown in FIG. 12. It is installed to form a diamond shape, and as the gap in the front and back directions decreases or increases, the gap in the left and right directions can conversely increase or decrease.

The first support frame 640 is installed to be rotatable between the connection installation portion of the first frame 631 and the fourth frame 634 disposed on one side and the first holder 700, respectively. ) supports.

The second support frame 650 is installed to be rotatable between the connection installation portion of the second frame 632 and the third frame 633 disposed on the other side and the second holder 800, respectively. ) supports.

Referring to FIG. 12, the first pressure roller unit 400 includes a front housing 410, a roller holder 420, a pressure roller 430, and a buffer spring 440.

The front housing 410 is formed with one side and the other side bent in a direction perpendicular to the front end and installed at the front end of the seating frame 100, the front end of the first support 610 penetrates and is inserted, and a roller holder 420 is provided on the inside. The rear end of is supported and disposed by a buffer spring 440.

The roller holder 420 is supported by the front end of the first support 610 installed at the rear end and is seated inside the front housing 410.

The pressure roller 430 is installed at the front end of the roller holder 420 and rotates and descends along the inner peripheral surface of the casing 11.

At least one buffer spring 440 is installed along the rear end of the roller holder 420 to support the roller holder 420 and at the same time cushion vibration or shock transmitted from the roller holder 420.

The support link 600 having the above-described configuration can be stably fastened to the heat exchanger pipe 12 while it is moving so that the heat exchanger pipe 12 can be stably lowered.

The above-described embodiments are for illustrative purposes, and those skilled in the art will recognize that the above-described embodiments can be easily modified into other specific forms without changing the technical idea or essential features of the above-described embodiments. You will understand. Therefore, the above-described embodiments should be understood in all respects as illustrative and not restrictive. For example, each component described as unitary may be implemented in a distributed manner, and similarly, components described as distributed may also be implemented in a combined form.

The scope sought to be protected through this specification is indicated by the patent claims described later rather than the detailed description above, and should be interpreted to include the meaning and scope of the claims and all changes or modified forms derived from the equivalent concept. .

50: Fastening device
100: Seating frame
200: First lowering roller unit
300: Second lowering roller unit
400: first pressure roller unit
500: second pressure roller unit
600: Support link
700: 1st holder
800: Second holder

Claims (2)

A first step of installing a casing from the ground surface to the lower level of the trench section, which is the area where trench digging will be performed;
After installing the casing, a second step of drilling a hole from the lower level of the excavation section to a predetermined depth with a drill;
a third step of inserting a heat exchanger pipe through the casing to the bottom of the drilled bore hole;
A fourth step of cutting the heat exchanger pipe so that the end of the heat exchanger pipe is exposed above the ground surface, which is the upper level of the trench section;
A fifth step of inserting a backup agent, which is a compressed sponge, into the heat exchanger pipe;
A sixth step of sealing the open end of the heat exchanger pipe;
A seventh step of installing a connection pipe at each end of the heat exchanger pipe;
An eighth step of inserting and installing a jig pipe into each of the connection pipes;
A ninth step of fastening each end of the heat exchanger pipe to each other with a fastening device; and
A tenth step of lowering the heat exchanger pipe through the casing to the bottom of the perforated borehole,
The fastening device is,
One end and the other end of the heat exchanger pipe exposed above the ground surface are formed in a cylindrical shape so that they can be seated on the inside, and the left and right diameters are longer than the front and rear diameters so that the one end and the other end of the heat exchanger pipe can be arranged in the left and right directions. A seating frame formed in an oval shape;
a first lowering roller unit on which the seating frame is installed on one side so that it can descend along the inner peripheral surface of the casing;
a second lowering roller unit installed on the other side of the seating frame so that it can descend along the inner peripheral surface of the casing;
a first pressure roller unit installed at the front end of the seating frame to descend along the inner peripheral surface of the casing;
a second pressure roller unit installed at the rear end of the seating frame to descend along the inner peripheral surface of the casing;
It is installed inside the seating frame and has a front end connected to the first pressure roller part and a rear end connected to the second pressure roller part, and the first pressure roller part and the second pressure roller part are installed on the inner peripheral surface of the casing. a support link that is in close contact with a support link whose front-to-back length decreases and left-right length increases as the gap between the first pressure roller portion and the second pressure roller portion decreases;
It is installed on one side of the support link and supports one end of the heat exchanger pipe disposed on one side of the internal space of the seating frame, and as the left and right lengths of the support link increase, one end of the heat exchanger pipe is attached to the seating frame. A first holder that adheres to one side of the internal space; and
It is installed on the other side of the support link to support the other end of the heat exchanger pipe disposed on the other side of the inner space of the seating frame, and as the left and right lengths of the support link increase, the other end of the heat exchanger pipe is connected to the seat frame. It includes a second holder that adheres to the other side of the internal space,
The support link is:
a first support whose front end penetrates and is exposed through the front surface of the seating frame and is installed on the first pressure roller unit;
a second support, the rear end of which penetrates the rear of the seating frame and is exposed, and is installed on the second pressure roller unit;
A first frame, a second frame, a third frame, and a fourth frame are connected and installed to be foldable with each other in a diamond shape, and the first frame is installed at the connection installation site of the first frame and the second frame disposed at the front end. an intermediate link portion that is connected and installed to enable the rear end of the support to be rotatable, and is connected and installed to allow the front end of the second support to be rotatable at a connection installation site between the third frame and the fourth frame disposed at the rear end;
a first support frame rotatably installed between the connection installation portion of the first frame and the fourth frame disposed on one side and the first holder to support the first holder; and
Heat exchanger pipe construction, including; a second support frame rotatably installed between the connection installation portion of the second frame and the third frame disposed on the other side and the second holder, respectively, to support the second holder; method. delete