JP5974251B2 - Equipment for installing heat exchange tubes using underground heat in ready-made piles - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an installation device for a ground-made heat exchange tube in a ready-made pile, and more specifically, inserts and installs a heat exchange tube against a buoyancy in a ready-made pile filled with uncured soil cement or water. Relates to a device for

  The underground temperature is almost constant at about 15 to 18 degrees C throughout the year, and in order to make effective use of this characteristic, a heat exchange tube is placed in a ready-made pile buried underground and water is contained in the tube. There is known an air conditioning system that uses the underground heat by circulating a heat medium such as the above.

  The inside of the ready-made pile is filled with uncured soil cement or water, and buoyancy acts on the heat exchange tube when trying to set the heat exchange tube in it. For this reason, when the heat exchange tube is set, the weight is used to counter buoyancy.

  FIG. 11 shows a conventional method for laying a heat exchange tube inside a ready-made pile. The heat exchange tube 10 has a heat medium feed pipe 10 a and a return pipe 10 b, and their tips are connected by a connecting member 11 having a U-shaped flow path. It is a conventional method to suspend a weight 13 from the connecting member 11 via a wire 12 or the like, and suspend the heat exchange tube 10 to a predetermined depth inside an already-made pile 14.

  At this time, since the heat exchange tube 10 receives a large buoyancy as described above, the weight 13 is often made of, for example, steel. Steel weights are effective because they have a large specific gravity and can be made smaller in volume compared to weights of the same weight made of other materials, but they are expensive. For this reason, it is desirable to recover and reuse the weight from the viewpoint of economy and environment. However, if the weight 13 is removed from the heat exchange tube 10, the tube will be lifted by receiving buoyancy, so that the predetermined depth is reached. In general, a technique is employed in which the weight 13 is left inside the ready-made pile.

  Patent Document 1 discloses a method of installing a heat exchange tube in a soil cement continuous wall. This method is a method in which the heat exchange tube is fixed in an embedded unit having a protective member for protecting the bottom of the heat exchange tube, inserted into the soil cement continuous wall, and fixed to the bottom ground of the continuous wall. However, this method has a limited depth position where the heat exchange tube is installed, and cannot be installed at an arbitrary depth position. In addition, since the weight of the buried unit is used when the heat exchange tube is inserted into the continuous wall (paragraph 0044 of the same document), the buried unit is used to counteract the buoyancy of the soil cement. In addition, the burial unit remains in the continuous wall and cannot be recovered, so that the construction cost is high.

JP 2011-184857 A

The present invention has been made based on the technical background as described above, and achieves the following object.
The object of the present invention is to collect and reuse a pushing tool such as a weight for placing the heat exchange tube in the ready-made pile, and to place the heat exchange tube at a predetermined depth position in the ready-made pile. It is to provide an apparatus that can be installed.

The present invention employs the following means in order to achieve the above object.
That is, the present invention is an apparatus for inserting and installing a heat exchange tube for use of underground heat against the buoyancy acting on the tube inside the ready-made pile,
A plurality of wing members attached to the heat exchange tube so as to be rotatable in the vertical direction with the lower end portion as a rotation center, and expanded and contracted so that the upper end portion contacts and separates from the inner periphery of the ready-made pile,
A pusher for lowering the tube loaded on the tube so as to be unloaded / collected when the heat exchange tube is inserted into the ready-made pile,
The wing member is rotated so that the wing member contracts when the pushing tool is loaded on the heat exchange tube and expands when the unloading member is unloaded, and the upper end of the wing member engages with the inner periphery of the ready-made pile. It is in the installation apparatus in the ready-made pile of the heat exchange tube using a geothermal heat characterized by being.

More specifically, the device according to the present invention is a mounting member provided in a horizontal direction on the heat exchange tube;
A rotation support portion of the wing member disposed below the attachment member;
A link member that connects between the attachment member and an intermediate portion of the wing member, and supports the wing member so as to allow its rotation;
An elevating rod that is provided on the attachment member so as to be movable up and down, and that is connected to the lower end portion of the rotation support portion to elevate and lower the wing member by moving up and down the rotation support portion;
A loading portion of the pushing tool provided at the upper end of the lifting rod;
It is possible to employ a configuration provided with an urging member that is provided between the loading portion and the mounting member and constantly urges the lifting rod upward to expand the wing member.

This invention apparatus, or a mounting member provided in the horizontal direction on the heat exchange tube,
A rotation support portion of the wing member disposed below the attachment member;
A link member that connects between the attachment member and an intermediate portion of the wing member, and supports the wing member so as to allow its rotation;
It is provided to hang down from the center of the pushing tool, extends through the hole provided in the connecting portion to the rotation support portion, and loads and unloads the rotation support portion to It is possible to adopt a configuration including an operation rod that expands and contracts the wing member by moving it up and down.

  In this case, it is possible to adopt a configuration in which a magnet that is attracted to the rotation support portion is provided at the tip of the operation rod. Moreover, the structure by which the sheet-like resistor which resists a buoyancy is provided between the lower end parts of the said several wing | blade member is also employable.

This invention apparatus, or a mounting member provided in the horizontal direction on the heat exchange tube,
A rotation support portion of the wing member provided on the mounting member;
A loading portion of a pushing tool formed on the front surface of the wing member in the contracted wing direction;
An operating rod provided to hang down from the center of the pushing tool,
The operating rod is engaged with the lower end of the pusher when the pusher is loaded to hold the wing member in a contracted state while the pusher is unloaded, and is disengaged when the pusher is unloaded to expand the wing member. The structure which has the engaging part made to wing | blade is employable.

  In this case, the load portion includes a sawtooth protrusion having a loading surface that is substantially horizontal when the blade member is contracted and a downward tapered surface, and the engagement portion has a plurality of conical protrusions having an upward tapered surface. The structure which consists of can be employ | adopted.

  Further, the wing member may employ a configuration in which the center of gravity is located closer to the upper end. Furthermore, the said pushing tool can employ | adopt the structure which has the restraint cylinder which engages with the outer periphery of the upper end part of these wing | blade member on the outer periphery of the said operation rod, and restrains a wing expansion. Furthermore, the structure by which the sheet-like resistor which resists a buoyancy is provided between the lower end parts of the said several wing | blade member is employable.

  According to this invention, the pushing tool is loaded on the heat exchange tube so that it can be unloaded and recovered, and the plurality of blade members attached to the heat exchange tube are expanded and contracted by loading and unloading of the pushing tool, and the blades are expanded during unloading. And since it engages with the inner periphery of a ready-made pile, a pushing tool can be collect | recovered and can be reused. Further, the heat exchange tube can be easily fixed and arranged at the predetermined depth position by simply unloading the pushing tool at the predetermined depth position.

It is a front view which shows 1st Embodiment of this invention, (a) shows a contracted blade state, (b) shows a blade-expanded state, respectively. It is a front view which shows the sinking state to the ready-made pile of the heat exchange tube by 1st Embodiment, (a) shows the time of loading, (b) shows the time of unloading. It is a front view which shows 2nd Embodiment of this invention, (a) shows a contracted blade state, (b) shows an expanded state, (c) shows a weight, respectively. It is a front view which shows the sinking state to the ready-made pile of the heat exchange tube by 2nd Embodiment, (a) shows the time of loading, (b) shows the time of unloading. 3rd Embodiment of this invention is shown, (a) is a front view, (b) is a side view, (c) is a front view of a loading state. It is a figure explaining the blade expansion effect | action of the thing of 3rd Embodiment. It is a front view which shows the subsidence state to the ready-made pile of the heat exchange tube by 3rd Embodiment. The improvement example of 3rd Embodiment is shown, (a) shows a contracted blade state, (b) shows a blade-expanded state, respectively. It is a top view which shows the structural example of the attachment member in the case of installing two heat exchange tubes. It is a front view which shows another example of a pushing tool. It is a front view which shows the setting method of the conventional heat exchange tube.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of the present invention. As described in the background art section, the heat exchange tube 10 is U-shaped, one of which constitutes a heat medium feed pipe 10a and the other of which constitutes a return pipe 10b, the lower end of which is a U-shaped flow path. It is connected by a connecting member 11 having.

  The installation apparatus according to the present invention has a pair of wing members 20, 20 attached to the heat exchange tube 10. In order to attach the blade members 20 and 20 to the heat exchange tube 10, an attachment member 21 is disposed in the horizontal direction between the feed tube 10a and the return tube 10b, and both ends of the attachment member 21 are located at the feed tube 10a and the return tube. 10b is fixed to each. A rotation support portion 24 made of an end plate is disposed below the attachment member 21, and the lower end portions of the wing members 20, 20 are attached to the rotation support portion 24 so as to be rotatable in the vertical direction.

  Link members 25, 25 that support the wing members 20, 20 on the attachment member 21 are arranged between the attachment member 21 and the intermediate part of the wing members 20, 20. Both ends of the link members 25 and 25 are connected to the members 21 and 20 so as to be rotatable in the vertical direction. Further, the connecting portion 25a between the link members 25, 25 and the wing members 20, 20 is slidable along a slit 26 provided in the length direction so as to allow the wing members 20, 20 to rotate. Yes.

  The mounting member 21 has a bearing cylinder 22 at the center, and an elevating rod 23 is fitted to the bearing cylinder 22 so as to be movable up and down. The rotation support portion 24 of the wing members 20, 20 is connected to the lower end portion of the lifting rod 23. As a result, when the elevating rod 23 is lowered and the rotation support portion 24 is lowered, the wing members 20 and 20 are contracted (FIG. 1A), and the elevating rod 23 is raised and the rotation support portion is lowered. When 24 rises, the blades are expanded accordingly (FIG. 1 (b)).

  A weight loading portion 27 (to be described later) is provided at the upper end of the lifting rod 23 that protrudes upward from the mounting member 21. A coil spring 28 surrounding the elevating rod 23 is disposed between the loading portion 27 and the attachment member 21. The coil spring 28 always urges the lifting rod 23 upward so as to expand the blade members 20 and 20. With the above configuration, when a weight is loaded on the loading portion 27, the elevating rod 23 descends against the biasing force of the spring 28, and the wing members 20 and 20 are contracted (FIG. 1A). When the weight is unloaded, the lifting rod 23 is lifted by the urging force of the spring 28, and the blade members 20 and 20 are expanded (FIG. 1B).

  FIG. 2 shows a method of setting the heat exchange tube 10 in the ready-made pile 14 by the apparatus of the above embodiment. As described above, the inside of the ready-made pile 14 is filled with uncured soil cement or water. The heat exchange tube 10 is gradually inserted into the ready-made pile 14 from the ground by the handling of a plurality of workers. At the time of insertion, the weight 30 as a pushing tool is loaded on the heat exchange tube 10. The weight 30 is made of steel. For example, the weight 30 is formed in a gate shape having a pair of vertical portions 30a and 30a and a horizontal portion 30b connecting them, and straddles the loading portion 27 in the horizontal portion 30b. So that it is loaded. As a result, the elevating rod 23 is lowered, and the wing members 20 and 20 are in a contracted state (FIG. 2A).

  The weight 30 has a wire 31 connected to the horizontal portion 30b thereof, and the weight 30 is suspended from the ground via the wire 31 as the heat exchange tube 10 is inserted into the ready-made pile 14. At that time, the wire 31 only supports the weight 30 lightly, and most of the load of the weight 30 is applied to the heat exchange tube 10. That is, the heat exchange tube 10 is applied with a downward load against buoyancy and descends in the ready-made pile 14, and at the same time, the blade members 20, 20 are kept in the contracted state.

  When the lower end of the heat exchange tube 10 reaches a predetermined depth, the weight 30 is lifted and unloaded. Thereby, the raising / lowering rod 23 raises, and the wing | blade members 20 and 20 are expanded. The wing members 20, 20 that have been expanded are engaged with the inner periphery of the ready-made pile 14 and fixedly arranged at the depth position (FIG. 2B). As shown in the figure, an annular protrusion 32 may be provided in advance on the inner periphery of the ready-made pile 14. By providing such a protrusion 32, the expanded wing members 20 and 20 can be surely engaged with the inner periphery of the ready-made pile 14, and the fixed arrangement can be ensured.

  FIG. 3 shows a second embodiment of the present invention. In the first embodiment, the weight lifts and lowers the rotation support portion 24 via the lifting rod 23 to expand and contract the wing members 20 and 20. In this embodiment, the weight directly raises and lowers the rotation support part 24 and expands and contracts the wing members 20 and 20 without using the lifting rod. In the second embodiment shown in FIG. 3, the same members as those in the first embodiment are denoted by the same reference numerals.

  FIG. 3C shows a weight used in the second embodiment. Similar to the one used in the first embodiment, the weight 30 is a portal type having a pair of vertical portions 30a, 30b and a horizontal portion 30b. The weight 30 used in this embodiment further has an operation rod 33 provided to hang downward from the center of the horizontal portion 30b. The operation rod 33 is inserted into a hole provided in the attachment member 21 at the time of loading, that is, the bearing cylinder 22, and extends downward toward the rotation support portion 24. Thereby, the operating rod 33 loads the load of the weight 30 on the rotation support part 24, pushes down this, and contracts the wing | blade members 20 and 20 (FIG. 3 (a), FIG. 4 (a)).

  A magnet 34 is provided at the lower end of the operation rod 31. As the magnet 34, a neodymium magnet can be used. This neodymium magnet has the highest magnetic energy among many types of magnets and is cheaper than other rare earth magnets. Accordingly, since the magnet 34 is strongly adsorbed to the rotation support portion 24, when the weight 30 is lifted when the weight 30 is unloaded, the rotation support portion 24 rises accordingly, and the wing members 20 and 20 are expanded. (FIG. 3B, FIG. 4B). Further, a sheet-like resistor 36 is provided between the lower end portions of the wing members 20 and 20 and is made of cloth or a resin material to resist buoyancy.

  FIG. 4 shows a method of setting the heat exchange tube 10 in the ready-made pile 14 by the apparatus of the above embodiment. As in the first embodiment, the heat exchange tube 10 is inserted into the ready-made pile 14 with the weight 30 loaded. That is, the operation rod 33 of the weight 30 is inserted into the bearing tube portion 22 and loaded on the rotation support portion 24. As a result, the rotation support portion 24 is lowered, and the wing members 20 and 20 are contracted (FIG. 4A).

  When the lower end of the heat exchange tube 10 reaches a predetermined depth, the weight 30 is lifted and unloaded. Thereby, the rotation support part 24 adsorb | sucked by the magnetic force to the operating rod 33 raises, and the wing | blade members 20 and 20 spread (FIG.4 (b)). When the blade members 20 and 20 are expanded, the sheet-like resistor 36 expands accordingly, contributing to suppression of the heat exchange tube 10 from rising and promotion of expansion of the blade members.

  The expanded wing members 20 and 20 have their upper ends engaged with the inner periphery of the ready-made pile 14 and fixedly arranged at the depth position. When the weight 30 is further lifted after the wing members 20, 20 are fixed to the ready-made pile 14, the operating rod 33 is pulled away from the rotation support portion 24, so that the weight 30 can be collected. Also in this embodiment, an annular protrusion 32 may be provided in advance on the inner periphery of the ready-made pile 14 in order to ensure the fixed arrangement of the heat exchange tube 10.

  It should be noted that the magnet 34 at the tip of the operation rod 33 is not necessarily provided as long as the heat exchange tube 10 is allowed to rise slightly. This is because, when the weight 30 is unloaded, the wing expansion action by the resistor 36 described above works as the heat exchange tube 10 floats.

  FIG. 5 shows a third embodiment of the present invention. In both the first and second embodiments, the rotation support portion is lifted and lowered by loading and unloading of the weights to expand and contract the wing members 20 and 20. In the third embodiment, the expansion / contraction of the wing member is controlled only by loading and unloading of the weight without raising and lowering the rotation support portion.

  5A is a front view of the heat exchange tube, and FIG. 5B is a side view of the tube. The same members as those in the first and second embodiments are denoted by the same reference numerals. In this embodiment, the rotation support portion 24 of the wing members 20, 20 is provided on the attachment member 21. That is, the wing members 20 and 20 are rotatably attached to the attachment member 21.

  On the front surfaces of the wing members 20, 20 facing each other in the contracted wing direction, sawtooth-shaped projections 40 constituting the loading portion are formed. Each protrusion of the serrated protrusion 40 has a loading surface 40a and a downward inclined surface 40b that are substantially horizontal when the blades are contracted (see also FIG. 6). The wing members 20 and 20 are provided with an additional weight member 41 so as to have a center of gravity at the upper end portion thereof and outside the longitudinal center line.

  As shown in FIG. 5C, the weight 30 is a portal type having an operation rod 33, similar to that used in the second embodiment. The operation rod 33 is provided with a plurality of conical protrusions 42 along the axial direction thereof. The operation rod 33 has a conical protrusion 42 that engages with the saw-tooth protrusion 40 of the wing members 20 and 20 when the weight 30 is loaded, and maintains the contracted state of the wing members 20 and 20, and is engaged when the load is unloaded. The wing members 20, 20 are expanded by releasing the joint.

  That is, as shown in FIG. 6, when the weight 30 is loaded, the bottom surface of the conical protrusion 42 of the operating rod 33 presses the loading surface 40 a of the serrated protrusion 40 of the wing member 20, 20, and the wing member 20, 20 is moved. At the same time as transmitting the load to the heat exchange tube, the blade members 20 and 20 are held in a contracted state (FIG. 6A). Then, when the weight 30 is unloaded, the conical surface of the conical protrusion 42 rises along the inclined surface 40b of the sawtooth protrusion, so that the wing members 20 and 20 are spread out. Since the center of gravity 20 is located outside the upper end of the wing member 20, a relatively large moment acts on the wing members 20, 20, and the wing members 20, 20 expand.

  7 inserts the heat exchange tube 10 into the ready-made pile 14 using the apparatus of the above embodiment, and expands the blade members 20 and 20 by the action as shown in FIG. A fixed arrangement is shown. Also in the case of this embodiment, by providing the sheet-like resistor 36 between the lower end portions of the wing members 20, 20, the sheet-like resistor 36 spreads along with the blade expansion, and the heat exchange tube 10 is prevented from being lifted. Contributes to promoting blade expansion of wing members. Moreover, in order to ensure the fixed arrangement of the heat exchange tube 10, an annular protrusion 32 may be provided in advance on the inner periphery of the ready-made pile 14 as in the first and second embodiments.

  FIG. 8 shows an example in which improvements are made in the third embodiment in order to reliably maintain the contracted state of the blade members 20 and 20. A coil spring 45 that urges the operation rod 33 downward is disposed between the upper end of the operation rod 33 and the horizontal portion 30 b of the weight 30. A restraining cylinder 6 surrounding the operation rod 33 is disposed on the outer periphery of the operation rod 33, and the upper end of the restraining cylinder 46 is fixed to the horizontal portion 30 b of the weight 30.

  A bar 47 for steadying is fixed horizontally to the operation rod 33, and both ends of the steadying bar 47 are fitted into slits 48 provided in the axial direction on the peripheral wall of the restraining cylinder 46. Therefore, the operation rod 33 can move relative to the restraining cylinder 46 in the vertical direction.

  FIG. 8A shows a loaded state of the weight 30, and the upper end portions of the wing members 20, 20 are disposed in the restraining cylinder 46, and the expansion of the blades is suppressed by the restraining cylinder 46. At this time, the spring 45 is compressed, and the load of the weight 30 is transmitted to the wing members 20 and 20 via the spring 45 and the operation rod 33.

  FIG. 8B shows the unloading state of the weight 30, and by lifting the weight 30, the restraining cylinder 46 is detached from the wing members 20, 20 and the restraint is released. Thereby, the operation rod 33 spreads the wing members 20 and 20 and the wing members 20 and 20 expand by the same action as that shown in FIG. At this time, an upward force is exerted on the wing members 20 and 20 due to the buoyancy acting on the heat exchange tube. However, since the spring 45 is extended and the operating rod 33 is pushed downward, the restraint cylinder 45 is formed of the wing member 20. , 20 easily disengages.

  The above embodiments are merely examples, and the present invention can take various forms. For example, in each of the above-described embodiments, the case where one heat exchange tube is installed in a ready-made pile has been described. This invention is not limited to this, and the present invention can also be applied when two or more heat exchange tubes are installed on a ready-made pile. In this case, for example, as shown in FIG. 9, the mounting member 21 is connected to the feed pipes and return pipes of the two heat exchange tubes 10 and 10, and the first mounting members 21a and 21a. The present invention can be applied by providing the second mounting member 21b that connects the two, and providing the second mounting member 21b with another member that constitutes the device of the present invention, such as a wing member.

  Moreover, in each said embodiment, although the example which uses the weight 30 as a pushing tool which mounts on the heat exchange tube 10 and falls this was shown, it replaces with a weight and a rod can be used. For example, when using a rod in the embodiment shown in FIG. 1, a cap 51 attached to the loading portion 27 is provided at the lower end of the rod 50 as shown in FIG. 10, and a downward force is applied to the rod 50, The heat exchange tube 10 can be lowered.

DESCRIPTION OF SYMBOLS 10 Heat exchange tube 14 Ready-made pile 20 Wing member 21 Mounting member 23 Lifting rod 24 Rotation support part 25 Link member 26 Slit 27 Loading part 28 Coil spring 30 Weight 31 Wire 31 Operation rod 36 Resistor 40 Serrated protrusion 40a Loading surface 41 Additional weight member 46 Restraint cylinder

Claims (10)

A device for inserting and installing a heat exchange tube for use of underground heat against the buoyancy acting on the tube inside the ready-made pile,
A plurality of wing members attached to the heat exchange tube so as to be rotatable in the vertical direction with the lower end portion as a rotation center, and expanded and contracted so that the upper end portion contacts and separates from the inner periphery of the ready-made pile,
A pusher for lowering the tube loaded on the tube so as to be unloaded / collected when the heat exchange tube is inserted into the ready-made pile,
The wing member is rotated so that the wing member contracts when the pushing tool is loaded on the heat exchange tube and expands when the unloading member is unloaded, and the upper end of the wing member engages with the inner periphery of the ready-made pile. A built-in pile installation device for underground heat-utilizing heat exchange tubes. A mounting member provided in a horizontal direction on the heat exchange tube;
A rotation support portion of the wing member disposed below the attachment member;
A link member that connects between the attachment member and an intermediate portion of the wing member, and supports the wing member so as to allow its rotation;
An elevating rod that is provided on the attachment member so as to be movable up and down, and that is connected to the lower end portion of the rotation support portion to elevate and lower the wing member by moving up and down the rotation support portion;
A loading portion of the pushing tool provided at the upper end of the lifting rod;
2. An urging member provided between the loading portion and the attachment member and constantly urging the lifting rod upward to expand the wing member. The installation apparatus in the ready-made pile of the heat exchange tube using a geothermal heat of description. A mounting member provided in a horizontal direction on the heat exchange tube;
A rotation support portion of the wing member disposed below the attachment member;
A link member that connects between the attachment member and an intermediate portion of the wing member, and supports the wing member so as to allow its rotation;
It is provided to hang down from the center of the pushing tool, extends through the hole provided in the connecting portion to the rotation support portion, and loads and unloads the rotation support portion to The pre-pile installation device for an underground heat-utilizing heat exchange tube according to claim 1, further comprising: an operation rod that expands and contracts the wing member by moving up and down.   The pre-installed pile installation apparatus for underground heat-utilizing heat exchange tubes according to claim 3, wherein a magnet that is attracted to the rotation support portion is provided at a tip of the operation rod.   The sheet-like resistor which resists buoyancy is provided between the lower ends of the plurality of wing members, and installed in a ready-made pile of underground heat-utilizing heat exchange tubes according to claim 3 or 4 apparatus. A mounting member provided in a horizontal direction on the heat exchange tube;
A rotation support portion of the wing member provided on the mounting member;
A loading portion of a pushing tool formed on the front surface of the wing member in the contracted wing direction;
An operating rod provided to hang down from the center of the pushing tool,
The operating rod is engaged with the lower end of the pusher when the pusher is loaded to hold the wing member in a contracted state while the pusher is unloaded, and is disengaged when the pusher is unloaded to expand the wing member. The installation apparatus in the ready-made pile of the heat exchanger tube using a geothermal heat of Claim 1 which has the engaging part made to wing | blade.   The load portion is composed of a sawtooth projection having a loading surface that is substantially horizontal when the wing member is contracted and a downward tapered surface, and the engagement portion is composed of a plurality of conical projections having an upward tapered surface. The installation apparatus in the ready-made pile of the underground heat utilization heat exchange tube of Claim 6 characterized by these.   The center of gravity of the wing member is located near its upper end, and the installation device in an already-built pile of a heat exchange tube using geothermal heat according to claim 6 or 7.   The said pushing tool has the restraint pipe | tube which fits the outer periphery of the upper end part of these wing | blade member and restrains an expansion blade on the outer periphery of the said operation rod. The installation apparatus in the ready-made pile of the heat exchange tube using a geothermal heat of description.   The sheet-like resistor which resists a buoyancy is provided between the lower end parts of these wing members, The underground heat utilization heat exchange tube of any one of Claims 6-9 characterized by the above-mentioned. Ready-made pile installation device.

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