JP3190262U - Fixture for heat exchange medium pipe in heat exchange pile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To load a load generated from a supply pipe of a heat exchange medium to a folded portion of a take-out pipe when a pile body and a pipe material are installed in the ground at the same time in an underground heat exchange system in which a pipe material for a heat exchange medium is attached to the outer periphery of a ready-made pile. Provided is a fixture for a tube material for a heat exchange medium provided with a protective case for reducing the amount of heat exchange. SOLUTION: A U-shaped heat exchange medium pipe material 5 in which a supply pipe 6A for a heat exchange medium such as an antifreeze liquid and a take-out pipe 6B are continuous at a folded-back portion 6C at the lower end is placed around the outer periphery of a ready-made pile in the longitudinal direction of the pile. In a heat exchange pile that is extended so that the heat exchange medium can be circulated in the vertical direction of the pile, a band 8 that can be fixed to the outer periphery of the tip of the heat exchange pile and the heat attached to the band. It is characterized by including a protective case 11 for accommodating a folded portion of a pipe material for an exchange medium. [Selection diagram] Fig. 2

Description

  The present invention is a heat exchange pile used in a system in which a pipe for a heat exchange medium is attached to the outer periphery of an existing pile, and this is installed in the ground and uses underground heat. The present invention relates to a fixture for exchange medium tubing.

  It has been conventionally known that an existing pile used as a foundation of a building is used as an underground heat exchanger. Among underground heat exchangers using such pre-built piles, in pre-boring pile construction, a pipe is wound around the outer circumference of the pre-made pile, and a heat exchange medium is circulated in the wound pipe ( For example, there is Patent Document 1).

  In the construction of a heat exchanging pile having a long construction length having joint piles, it is necessary to install the pipe material for the heat exchanging medium sequentially around the outer periphery of the pile body as the piles are laid. And in the construction of burying the pile to the predetermined depth, the pile tip is subjected to resistance by soil cement and finally attached to the outer periphery of the pile tip in order to fix the pile against the resistance. The medium pipe may also be twisted by a large resistance. In particular, the folded portion at the lower end of the heat exchange medium tube material is susceptible to such resistance, and the tube material may be damaged.

  In order to avoid such damage to the heat exchange medium pipe, JP 2012-57824 A discloses a pile body and excavation hole by installing the folded portion of the heat exchange medium pipe on the upper part of the expanded lower pile. It is proposed to secure a space for arranging the heat exchange medium pipe material between the walls of the wall and not to receive a large resistance even when the pile body is rotated and set.

JP 2012-57824 A

  However, as described above, even if an installation space for arranging the folded portion of the heat exchange medium tube material is secured, it is unavoidable that a load is applied to the folded portion of the tube material when the heat exchange pile is rotationally embedded. In some cases, the heat exchange medium tube was damaged.

  In order to solve the problems of the prior art, the present invention provides a heat exchange pile in which the pipe material is not twisted by the load applied to the folded portion of the heat exchange medium pipe material when the heat exchange pile is rotationally embedded. An object of the present invention is to provide a fixture for heat exchange medium tubing.

  In order to achieve the above object, the device according to claim 1 of the present application is a U-shaped configuration in which a supply pipe and a take-out pipe for a heat exchange medium such as an antifreeze liquid are continuously connected at the folded portion at the lower end on the outer periphery of an existing pile. In a heat exchange pile in which a pipe material for heat exchange medium is extended in the longitudinal direction of the pile so that the heat exchange medium can be circulated in the vertical direction of the pile, a band that can be fixed to the outer periphery of the tip of the heat exchange pile And a heat exchange medium tube fixture in a heat exchange pile comprising a protective case that houses the folded portion of the heat exchange medium tube attached to the band.

  In order to achieve the above object, the invention according to claim 2 of the present application is characterized in that the protective case includes a pair of left and right side wall portions protruding in the radial direction of the heat exchange pile, an upper surface portion between the side wall portions, and Each of the lower surface portions is opened, and at least the upper portion of the front surface portion is covered with a front cover as a fixture for a heat exchange medium tube in a heat exchange pile.

  And in order to achieve said objective, the device which concerns on Claim 3 of this application is used as the fixture of the pipe material for heat exchange media in the heat exchange pile characterized by mounting the temperature sensor in the said protective case.

  In the invention according to claim 1 of the present application, a U-shaped heat exchange medium pipe material in which a heat exchange medium supply pipe and an extraction pipe such as an antifreeze solution are continuous at the folded portion at the lower end is formed on the outer periphery of the existing pile. In the heat exchange pile extending in the direction so that the heat exchange medium can be circulated in the vertical direction of the pile, a band that can be fixed around the outer periphery of the tip of the heat exchange pile, and the band attached to the band Since it is a fixture for heat exchange medium tubing in a heat exchange pile comprising a protective case that houses the folded part of the heat exchange medium pipe, a protective case having a function of protecting the folded part of the heat exchange medium pipe It can be easily attached to a desired position outside the pile body.

  Further, in the invention according to claim 2 of the present application, the protective case includes a pair of left and right side wall portions projecting in the radial direction of the pile, and an upper surface portion and a lower surface portion between the both side wall portions are open, Since at least the upper part is covered with a front cover, the folded portion at the lower end of the heat exchange medium tube is inserted from the upper surface of the protective case and pulled out from the lower surface. Can be connected to a band fixed around the outer periphery of the tip.

  Therefore, the folded portion of the heat exchange medium pipe can be easily and firmly fixed to the outer periphery of the heat exchange pile through the band, and the supply pipe and the extraction pipe of the heat exchange medium pipe Since the folded portion is surrounded by both side walls of the protective case, a load is not applied to the folded portion even when the heat exchange pile is rotationally embedded, and the tube material is not twisted.

  And since the device which concerns on Claim 3 of this application is equipped with the temperature sensor in the said protective case, the cable which connected one end to this temperature sensor is extended to the above-ground part along the said pipe material for heat exchange media Thus, if the underground temperature near the tip of the heat exchange pile can be measured, damage to the temperature sensor that occurs during construction can be reliably prevented.

It is the front view and top view of a heat exchange pile provided with the fixture of the pipe material for heat exchange media concerning this invention. It is an enlarged front view of the lower end part of FIG. It is an expansion perspective view which shows the principal part of this invention.

  Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. In the figure, 1 is a pile body in which a lower pile 2 and an upper pile 3 made of pre-made piles are connected by a non-welded joint portion 4, and the lower pile 2 is located at the lower end of the enlarged portion 2A. It is what is called ST pile equipped with.

  5 is a U-shaped heat exchange medium tube installed in close contact with the outer periphery of the pile body 1 and extends in the longitudinal direction A of the pile so that a heat exchange medium such as antifreeze can be circulated in the vertical direction of the pile body 1. A pair of left and right heat exchange medium supply pipe 6A and heat exchange medium take-out pipe 6B, and a folded portion 6C connected to the lower ends of both pipes 6A and 6B via a joint member 7. It is a thing of the composition which becomes.

  8 is a fixing band attached to the outer periphery of the front end of the pile body 1, and is divided into a plurality of (in the figure, divided into two) band members 9 </ b> A and 9 </ b> B corresponding to the outer peripheral shape or diameter of the lower pile 2, Both ends of the band members 9A and 9B wound around the outer periphery are fixed to the outer periphery of the lower pile 2 by tightening with bolts 10A and nuts 10B, or by removing the bolt 10A from the nut 10B. It can be removed from the surroundings.

  11 is a protective case attached to the band member 9B of the fixing band 8 by welding or the like, and houses the folded portion 6C of the heat exchange medium tube material 5 and the joint member 7 portion attached to the folded portion 6C. It is for protecting from the load given when the pile body 1 is rotationally embedded, and has the following configuration.

  That is, the protective case 11 has a pair of left and right side walls protruding in the radial direction of the lower pile 2 from the outer peripheral surface of the band member 9B when the fixing band 8 is wound around the outer periphery of the lower pile 2 and fixed. The upper surface portion 13A and the lower surface portion 13B are opened between the portions 12A, 12A and the side wall portions 12A, 12A, which are fixed to the band member 9B at a predetermined interval by welding or the like at the lower base portion thereof. The upper portion of the front surface portion is covered with the front cover 13C.

  Reference numeral 14 denotes a positioning member for the heat exchange medium pipe 5, and the heat exchange medium supply pipe 6 </ b> A and the extraction pipe 6 </ b> B constituting the U-shaped pipe 5 are formed of a pair of sandwiching portions 14 </ b> A and 14 </ b> B. It is gripped by the positioning member 14 and fixed to the positioning member 14 wound around the outer periphery of the pile body 1 in a state of being separated from each other. As a result, the short circuit does not occur between the heat exchange medium supply pipe 6A and the heat exchange medium take-out pipe 6B.

  Therefore, when extending in the longitudinal direction A of the pile with the U-shaped heat exchange medium pipe 5 in close contact with the outer periphery of the pile body 1, first, the heat exchange medium for the outer periphery of the lower pile 2. A pair of left and right heat exchange medium supply pipes 6A and heat exchange medium take-out pipes 6B constituting the pipe member 5 are held by a positioning member 14 including a pair of sandwiching portions 14A and 14B installed on the lower pile 2. In the state where they are separated from each other, they are arranged around the outer periphery of the lower pile 2.

  Next, the band members 9 </ b> A and 9 </ b> B of the fixing band 8 are wound around the outer periphery of the lower pile 2, and arranged in the vertical direction in a state of being separated from each other around the outer periphery of the lower pile 2. The two band members 9A wound around the outer periphery of the lower pile 2 in accordance with the position of the protective case 11 installed on the fixing band 8 with the folded portions 6C and the joint members 7 of the pipe members 6A and 6B. , 9B are fixed to the outer periphery of the lower pile 2 by fastening with bolts 10A and nuts 10B.

  Next, the folded portion 6C and the joint member 7 at the lower end of the heat exchange medium tube material 5 are inserted from the upper surface portion 13A of the protective case 11 and pulled out from the lower surface portion 13B, and the front surface portion that is not covered by the front cover 13C. In the lower part, a through-hole 7A formed in the head of the joint member 7 and a through-hole 15A formed in the protrusion 15 attached to the band member 9B of the fixing band 8 between the side wall portions 12A and 1Aa. By passing the lead-in wire 16 and tying it, the folded portion 6C and the joint member 7 at the lower end of the heat exchange medium tube 5 are placed around the outer periphery of the lower pile 2 via the fixing band 8 between the side wall portions 12A and 12A. Fixed.

  As described above, after extending in the pile longitudinal direction A in a state where the heat exchange medium tube material 5 is in close contact with the outer periphery of the lower pile 2, the upper pile 3 is attached to the upper end of the lower pile 2 with a non-welded joint portion. 4 is connected. And the upper extension part of both pipes 6A and 6B of the pipe material 5 for heat exchange media installed in the outer periphery of the lower pile 2 is the same as having installed in the outer periphery of the upper pile 3, and the outer periphery of the said lower pile 2 The extension work is performed by arranging and fixing in a vertical direction in a state of being separated from each other by using means, and a heat exchange pile having a predetermined length is formed. In the figure, reference numeral 17 denotes a stretch film wound from above both pipes 6A and 6B in order to fix both pipes 6A and 6B of the heat exchange medium pipe 5 in place.

  Therefore, in the construction where the heat exchange pile is buried to a predetermined depth, the pile body is finally rotated and the heat exchange pile is fixed in the ground against resistance, but the tip of the heat exchange pile is soil cement. Will receive resistance. However, since the folded portions 6C and 7 at the lower end of the heat exchange medium tube 5 that is most susceptible to resistance are surrounded by the side walls 12A and 12A of the protective case 11, the heat exchange piles are also embedded in a rotating manner. No load is applied to the folded portions 6C and 7 and the tube material is not twisted.

  In the present invention, since a temperature sensor (not shown) is mounted in the protective case 11, a cable having one end connected to the temperature sensor is connected to the ground part along the heat exchange medium tube 5. By stretching, it is possible to reliably prevent damage to the temperature sensor that occurs during construction, as well as to measure the underground temperature near the tip of the heat exchange pile from the ground.

DESCRIPTION OF SYMBOLS 1 Pile body 2 Lower pile 3 Upper pile 4 Non-welded joint part 5 Heat exchange medium pipe 6A Heat exchange medium supply pipe 6B Heat exchange medium take-out pipe 6C Folded part 7 Joint member 7A Through hole 8 Fixing band 9A Band member 9B End portion 10A Bolt 10B Nut 11 Protective case 12A Side wall 13A Upper surface portion 13B Lower surface portion 13C Front cover 14 Positioning member 14A / 14B Holding portion 15 Protruding portion 15A Through hole 16 Pull-in wire 17 Stretch film

Claims (3)

  On the outer periphery of the prefabricated pile, a U-shaped heat exchange medium tube with a heat exchange medium supply pipe and an extraction pipe such as antifreeze liquid that are continuous at the folded portion at the lower end is extended in the longitudinal direction of the pile. A heat exchange pile that allows the medium to circulate in the vertical direction of the pile, and a band that can be fixed around the outer periphery of the tip of the heat exchange pile, and a folded portion of the pipe material for the heat exchange medium that is attached to the band A fixture for a heat exchange medium pipe in a heat exchange pile comprising a protective case for storing the material.   The protective case has a pair of left and right side wall portions projecting in the radial direction of the heat exchange pile, an upper surface portion and a lower surface portion between the both side wall portions are open, and at least an upper portion of the front surface portion is covered with a front cover. The fixture of the pipe material for heat exchange media in the heat exchange pile of Claim 1 characterized by the above-mentioned.   The fixture for a heat exchange medium pipe in a heat exchange pile according to claim 1 or 2, wherein a temperature sensor is mounted in the protective case.

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