DE102009036325A1 - Mounting device for a geothermal probe - Google Patents

Abstract

The invention relates to an installation device for a geothermal probe 2 for introducing a geothermal probe 2 into the ground, which has at least one geothermal probe with a probe head 2c, which connects the fluid-tight flow 2a, 2d and return 2b, 2e of a geothermal probe pipe arrangement with one another, and is characterized by this that the probe head 2c is fixed in a propulsion head 3, the propulsion head 3 being assigned a rocket 5 in such a way that its impact energy acts on it.

Description

The The invention relates to a mounting device for a geothermal probe suitable for this purpose is a geothermal probe to be built into the ground. Furthermore, the invention relates to a method for introducing a geothermal probe into the ground using an installation device for a geothermal probe and a device for the extraction or storage of geothermal energy with a geothermal probe, the after the procedure for introducing a geothermal probe in the ground below Use of a mounting device for a geothermal probe is introduced.

geothermal probes serve to heat energy to gain from the ground or heat energy in the Store floor. Another application is by removing waste heat cooling processes so dissipate is.

For this becomes the heat transport accomplished by means of a fluid, which in a tube assembly is directed.

So For example, so-called U-type probes in the form of two are approximately parallel lying to each other in approximately vertically inserted into the ground pipes known, with one of the tubes as a flow and the other tube as returns serves.

The Pipes are at their foot end, that means that lowest part in the ground, by one in general U-shaped designed deflection, which can be designed as a probe foot and the flow the fluid from the flow to the return allows connected.

One Another known type of geothermal probes is the so-called coaxial probe. This is a pipe arrangement selected in the case of an outer tube and one in the lumen of the outer tube is provided approximately coaxially received inner tube.

The outer tube is closed at its lowest point in the ground.

Of the liquid flow then becomes between inner and outer tube educated.

such geothermal probes typically are down to depths of up to about 300 meters and more built into the ground.

by virtue of of the constant in deep soil layers constant and in particular Geothermal probes are increasing in increasing depths of temperature preferably as possible deeply installed.

For this is first with the help of a suitable drill Hole drilled, taking after reaching the desired depth drill head and drill pipe be removed from the well produced.

The geothermal probe will follow sunk into this hole and the remaining annular gap between Drill hole inner surface and geothermal probe with a suitable filling material filled.

With this backfilling the thermal connection of the geothermal probe is made to the ground, so they effectively absorb heat energy from the ground can give this.

The Work processes associated with making the borehole are, so include the actual drilling process, as well as the adjustment of the Borehole for the geothermal probe to be introduced then and also the operation of filling the wellbore after insertion the geothermal probe On the one hand require a considerable amount of space to there the required equipment up or down, as well as space is needed to equipment to bring to the borehole, finally will needed more space for example, to create the drilling pond. The drilling pond is required to Rinse the drill cuttings out of the drill hole and pick them up.

The Production of boreholes in stock, that is on built, planted or otherwise used areas therefore always with their dismantling or destruction connected.

Farther Under certain conditions it is not possible to drill a hole when for example, not enough Space is available or can be created to set up the drill. This can be due to lack of space as well as lack of space clear height be caused at the borehole.

This limits the possibility considerably, geothermal probes to use more in such places.

Object of the present invention is therefore to provide a mounting device for a geothermal probe, which overcomes the disadvantages described above, that is operable without the need for large and extensive equipment, and in particular allowed to install geothermal probes in the ground, without existing building stock to a considerable extent be affected. The installation device for a geothermal probe should also be used in places where the space in the above designate neten senses is extremely scarce.

A Another object of the invention is a method for introducing a geothermal probe in the ground using such a mounting device for a geothermal probe specify.

Finally is It is still an object of the invention, a device for the extraction or Storage of geothermal energy with at least one geothermal probe, the under the method for introducing a geothermal probe in the ground below Using such a mounting device for a geothermal probe introduced into the ground is to call.

The solution the task succeeds according to the claim 1.

According to the invention, it is provided that the mounting device for a geothermal probe for introducing a geothermal probe into the ground, the at least one geothermal probe with a probe head which fluid-tight flow and return of a geothermal probe tube assembly interconnects, characterized in that the probe head is set in a propellant head, wherein the propellant head a Earth rocket is assigned such that its impact energy on him acts.

in the According to the present invention, it is therefore provided that the free space in the ground, which serves to receive the geothermal probe tube arrangement, is generated by means of a propellant head associated with an earth rocket is.

The Earthmoving is a device known from the prior art, by means of a pneumatic, hydraulic or electric Drive by impact energy acts so that they are through Moved soil layers, in this way a free Creates space through the soil layer, which is then usable.

in the Area of so-called horizontal drilling, where, for example A street to be traversed by a conduit, with the help of earth-jackets such free spaces or cavities generated.

at The present invention now provides that the probe head the geothermal probe tube assembly is determined on the propellant head.

This causes the penetration of the propellant head into the ground, initiated by the propellant head associated Erdrakete is, the geothermal probe tube assembly is fed into the space thus created.

Of the Propulsion head absorbs impact energy of the earth rocket and displaces the Ground under creating a free space in which the installation device for one geothermal probe successively penetrates deeper.

When Techniques for fixing the probe head of the heating probe tube assembly at the driving head are welding, Gluing, riveting, screwing, clamping, clamping and the like a. suitable.

In an advantageous embodiment the installation device for a geothermal probe is provided that the probe head frictionally in the propellant head is fixed.

It is hereby possible that a particularly effective retraction of the geothermal probe tube assembly by the propellant head in the free space caused by displacement of the soil by the Propulsion head was generated takes place.

According to the invention can be provided be that the probe head by means of at least one screw in the propellant head is fixed.

The Provision of a screw for fixing the probe head in the driving head is particularly advantageous when this is done on site should. It's that easy, fast and safe set the probe head in the drive head.

It is also included and advantageous in a modification of the invention if at least one pipe to the geothermal probe tube assembly a section at least in an area near the probe head force fit is fixed on or in the driving head. In this case, the Connection or transition between the at least one tube of the geothermal probe tube assembly and the probe head by tensile forces not loaded, but then the tensile forces act exclusively on the pipe.

It has been found in the context of the present invention that it is particularly advantageous if the propellant head designed in such a way is that the penetration into the ground and / or the displacement of the Soil is relieved.

With this measure can achieve a particularly effective installation of geothermal probe tube assembly in the ground become.

It can this purpose according to the invention provided be that the propellant head tapering in the direction of penetration is designed.

It can thus result in a particularly rapid displacement of soil, resulting in a fast and thus cost-optimized installation of the geothermal probe tube assembly leads. In the direction of penetration, that is, in the direction in which the propellant head is moved in the ground by means of the Erdrakete pointed driving head designed, for example, cone or frustoconical, arrow-shaped, prismatic or be designed in the form of a partial ellipsoid of revolution. It is essential in the context of the present invention that the cross section of the propellant head at the end located in the direction of penetration, which is designed tapered, is substantially smaller than at the opposite end to which the geothermal probe tube assembly is dragged.

It has continued to be advantageous in the context of the present invention arise when the propellant head a lubricious or lubricious coated surface having.

With a lubricious coated surface of the Propulsion head it is possible one - in particular even with different types of soil - fast and thus effective Laying the geothermal probe pipe arrangement to get into the ground.

When lubricious Coating the surface of the Propulsion head is used in particular a layer of a polymer material, which is tough at the same time and has a low coefficient of sliding friction.

For this For example, polyamide is very well suited.

Also other polymeric materials such as halogenated, in particular Fluorinated hydrocarbons (eg Teflon) are included suitable.

It Alternatively, however, it can also be provided if the surface of the Driving head lubricious is.

This In particular, by polishing the surface of the Propulsion head done. Furthermore, it can be provided that the Propulsion head is designed with respect to its surface such that this possible homogeneous is that means no jumps or bulges.

in the According to the present invention, it is further provided that the propellant head an element for receiving the impact energy of Earth rocket has.

The Providing an element for receiving the impact energy of the earth rocket in propellant head is advantageous in so far as that of the Erdrakete provided impact energy in the propellant head very effectively Effect is brought.

For this is particularly provided that the element for receiving the impact energy is arranged at the penetrating end of the propellant head.

With This embodiment of the present invention succeeds in that the preparation of the free space for drawing in the geothermal probe tube assembly serves, is particularly fast and therefore inexpensive to produce.

in the The scope of the present invention can furthermore be provided that the earth rocket is operable so that the resultant by the Erdrakete in the mounting device for the geothermal probe introduced force vector in one of the longitudinal axis of the mounting device deviating direction shows, and thus the mounting device during installation a curved, For example, describes hyperbolic or parabolic web. It is thus possible several geothermal probes to install in the ground so that these at their feet are far from each other, yet for example in one common shaft construction end what the technical effort for the connections and their maintenance enormously reduced. The greatest possible distance between the foot points several geothermal probes is from the aspect of a possible efficient energy production of course prefers.

It but can also be advantageously provided, several geothermal probes to be built into the ground from a common shaft structure, that these are at a substantially straight, d. H. not curved forward movement in the ground simply by starting in a position inclined to the earth's surface in the direction you want point. Even so, it succeeds without problems, the bases the geothermal probes far from each other and thus their operation effectively to design.

The with the help of the mounting device according to the invention for one geothermal probe bored in the established free space geothermal probe can be either a so-called U-probe, in which the pipes for flow and return are arranged approximately parallel to each other.

alternative can the geothermal probe a coaxial probe, in which an outer tube and in it about coaxially fixed inner tube are formed.

The geothermal probe tubes dragged behind the propellant head may have a special sliding layer (for example, such as the one shown in FIG Teflon and / or fluoropolymers and / or silicone-containing compounds, etc.) on the outer surface of the tubes have to allow in the soil a better intake behavior.

The in the mounting device for a geothermal probe provided Erdrakete can electrically or hydraulically or pneumatically or operated in a combination of the foregoing.

It is thus possible depending on the available stationary drive energies to operate the earth rocket accordingly.

In a preferred embodiment of the present invention can be further provided that a backfill is provided, the to fill by the repression of the ground created free space next to the geothermal probe with a filling material serves.

Prefers becomes the fill line parallel to the geothermal probe pipe arrangement pulled into the ground. After reaching the desired installation depth is and after further action Then the free space between the inner wall can be taken the borehole and the geothermal probe tube assembly with a filling material, For example, be filled with bentonite, using the filling line.

In a further development of the invention can also be provided that the hydraulic or pneumatic line, which supplies the earth rocket with energy, after the introduction the geothermal probe remains in the ground and for introducing a suitable material for backfilling of the remaining free space is used. For this purpose, it is provided that the hydraulic or pneumatic line remote from the earth rocket can be decoupled. In this case, you can then do without a separate backfilling line provided.

With the introduction of the filling material is the thermal connection of the geothermal probe to the surrounding Ground reached.

The Method for introducing a geothermal probe in the ground below Use of a mounting device for a geothermal probe is characterized from that a mounting device for a geothermal probe of the above Kind provided and at the place of introduction, d. H. in the place where the geothermal probe is placed in the ground, is placed.

Subsequently, will for introducing the geothermal probe operated in the ground the Erdrakete and by displacing the Ground created a free space. Into the free space penetrates the Mounting device for a geothermal probe successively until the desired Penetration depth is reached in the soil.

It manages to install geothermal probes in all soil types, only when the rock is present, the technique described above is not applicable.

From great The advantage here is that the soil in this technique compacted by the displacement process and thus a higher one thermal conductivity having. The operation of geothermal probes will thus more effective.

After this the desired Penetration depth is reached in the ground, the Erdrakete remains in the propellant head in by displacement the floor created free space permanently. The Earth Rocket will not removed from free space and is therefore not again for further Geothermal probe installation work to disposal.

It is thus possible to choose an Earth Rocket which has a simple design and is therefore inexpensive. In particular, an earth rocket can be selected, constructed in such a way is that the request made to it, namely just a single hole by repression of the soil and then stop being used Fulfills. For this purpose, the earth rocket can be designed so that all components easy and inexpensive to produce are, for example, the otherwise required high wear resistance or long-term stability the individual components can be dispensed with. The Earth Rocket can ultimately be designed using the simplest technology.

In order to can the installation of geothermal probe means especially the "lost ground rocket" described above be produced economically.

According to the invention, in be provided a development that the propellant head asymmetrical or eccentrically or at a defined angle to the probe's longitudinal axis is fixed so that the probe during laying a defined arc when moving through the ground describes.

When Episode reach from a start pit from the individual probes one best Distance without mutual interference. This allows a higher efficiency in operation achieve the single probes.

It can also be advantageously provided that the bending of the probe head to the axis in which the propellant head moves away is effectively adjustable and thus the installation is controlled.

In order to may be the path of the earthquake probe be set in the ground, making a particularly favorable Can be installed in the ground.

The Invention also includes that the propellant head by an integrated active or passive transmitter or transponder or reflector located can be.

It this is advantageously possible the installation of the geothermal probe into the ground when reaching a defined target point (eg at a property boundary) to end.

According to the invention, it is provided that means for powering the Earth Rocket from the Earth Rocket can be uncoupled when the desired depth of penetration in the soil is reached.

The Uncoupling can be done remotely controlled or, for example by a certain movement of the means for supplying energy the Erdrakete, for example, by moving the tube in the form a rotary motion.

The Means of energy supply of the earth rocket, if this is a Hose is, as in pneumatic or hydraulic operation the Earth Rocket chosen is, after uncoupling from the earth rocket for filling the remaining free space in the ground.

To becomes the backfill material pumped through the hose and exits at its end. The backfill material is thus introduced into the remaining free space and distributed There, where the thermal coupling to the wall of the displacement of the Bodens generated free space. The backfill material is for example Bentonite, which due to its low viscosity, the remaining free space Completely fill out can.

By its swelling capacity will the full filling of the remaining free space advantageously supported.

The Erdrakete, from which the hose was decoupled, remains in the the mounting device for a Geothermal probe. The Erdrakete is thereby in the backfill material embedded.

A Equipment for the extraction or storage of geothermal energy with at least one geothermal probe, introduced into the soil by the method described above is also included in the present invention.

in the The invention is explained in more detail below with reference to three figures:

1 shows a cross section through a mounting device for a geothermal probe in a first embodiment of the invention;

2 shows a cross section through a mounting device for a geothermal probe in a second embodiment of the invention;

3 shows a cross section through a mounting device for a geothermal probe in the remaining generated by displacement of the soil free space during the filling process.

1 shows a mounting device for a geothermal probe 1 in a cross section, which is a geothermal probe 2 includes.

The geothermal probe 2 has a pipe 2a on, which serves as a supply for the geothermal probe. Furthermore, a pipe 2 B provided, which represents the return of the geothermal probe. The probe head 2c connects the two pipes 2a and 2 B the geothermal probe 2 ,

The geothermal probe 2 is in the propellant head 3 by means of a fastener 4 at the probe head 2c established.

The propulsion head 3 has an end 3a on, which is designed tapering.

In 1 This is shown that the end of the propellant head 3a graded pointed is designed.

The propulsion head 3 still has a fuselage 3b on, which is larger in cross-section than the end of the propellant head 3a ,

The pipes 2a . 2 B the geothermal probe 2 protrude from the trunk of the propellant head 3 approximately in the axis in which the propellant head penetrates with its tapered shaped end into the ground.

The installation device for a geothermal probe 1 also includes an earth rocket 5 who means 5a for powering the Earth Rocket 5 assigned.

In 1 is shown that the means 5a for powering the Earth Rocket 5 a hose is.

The propulsion head 3 also has an element for absorbing impact energy 6 on.

The Earth Rocket 5 transfers its impact energy to the element for absorbing impact energy 6 ,

Under the influence of the element to absorb the impact energy 6 acting earth rocket 5 can the propulsion head 3 penetrate into the ground with its tapered end while the geothermal probe 1 to move into the free space created by the displacement of the soil.

In 2 is a cross section through a geothermal probe mounting device 1 shown in a second embodiment of the invention.

reference numeral for same Components correspond to each other.

In the geothermal probe installation device 1 at the driving head 3 a geothermal probe 2 with the help of a fastener 4 at the probe head 2c established.

The geothermal probe 2 has a pipe 2d on, which is used as a forward of the geothermal probe.

A pipe 2e that in the pipe 2d is axially fixed, it serves as a return of the geothermal probe.

The propulsion head 3 is above as below 1 described designed.

Likewise, it is provided in this embodiment of the invention that the Erdrakete 5 that a means 5a for powering the Earth Rocket 5 , here in the form of a tube, on an element for receiving impact energy 6 which acts on the propellant head 3 assigned.

Under the influence of the element to absorb the impact energy 6 acting earth rocket 5 can the propulsion head 3 penetrate into the ground with its tapered end while the geothermal probe 1 to move into the free space created by the displacement of the soil.

In 3 is a cross section through a mounting device for a geothermal probe 1 shown in the space generated by displacement of the soil during the filling process of the remaining free space.

reference numeral for same Components correspond to each other.

After decoupling the agent 5a for powering the Earth Rocket 5 , here in the form of a hose, will pass through the hose 5a the backfill material 7 initiated in the remaining free space and spread there, with the thermal coupling to the wall 8th of the space created by displacement of the soil is done. The backfill material 7 is bentonite, which completely fills the remaining free space due to its low viscosity. Due to its swelling capacity, the complete filling of the remaining free space is advantageously supported.

The Earth Rocket 5 from which the hose 5a has been decoupled, remains in the mounting device for a geothermal probe 1 , The Earth Rocket 5 will be in the backfill material 7 embedded.

LIST OF REFERENCE NUMBERS

1

built-in unit for one geothermal probe

2

geothermal probe

2a

leader the geothermal probe

2 B

Rewind the geothermal probe

2c

probe head

2d

leader the geothermal probe

2e

Rewind the geothermal probe

3

propellant head

3a

The End of the propellant head

3b

hull of the propellant head

4

fastener

5

Erdrakete

5a

medium for powering the Earth Rocket

6

element for absorbing impact energy

7

backfill

8th

wall by repression of the floor created free space

Claims (15)

Mounting device for a geothermal probe 1 for introducing a geothermal probe 2 into the ground, the at least one geothermal probe 2 with a probe head 2c has, the fluid-tight flow 2a . 2d and return 2 B . 2e a geothermal probe tube assembly interconnects, characterized in that the probe head 2c in a jacking head 3 is fixed, wherein the driving head 3 an earth rocket 5 is assigned such that their impact energy acts on him. Mounting device for a geothermal probe 1 according to claim 1, characterized in that the probe head 2c non-positively in the driving head 3 is fixed. Mounting device for a geothermal probe 1 according to claim 1 or 2, characterized in that the probe head 2c by means of a fastener 4 , in particular in the form of a screw, in the driving head 3 is fixed. Mounting device for a geothermal probe 1 according to one of claims 1 to 3, characterized in that the propulsion head 3 is designed so that the penetration into the soil and / or the displacement of the soil is facilitated. Mounting device for a geothermal probe 1 according to claim 4, characterized in that the propulsion head 3 designed tapering in the direction of penetration. Mounting device for a geothermal probe 1 according to claim 4 or 5, characterized in that the propulsion head 3 has a lubricious or lubricious coated surface. Mounting device for a geothermal probe 1 according to one of the preceding claims, characterized in that the driving head 3 an element for absorbing the impact energy 6 the Earth Rocket 5 having. Mounting device for a geothermal probe 1 according to claim 7, characterized in that the element for receiving the impact energy 6 at the penetrating end of the propellant head 3 is arranged. Mounting device for a geothermal probe 1 according to one of the preceding claims, characterized in that the geothermal probe 2 a submarine probe is where the tubes for flow 2a and return 2 B are arranged approximately parallel to each other. Mounting device for a geothermal probe 1 according to one of claims 1 to 8, characterized in that the geothermal probe 2 a coaxial probe is where an outer tube 2d and an inner tube approximately coaxially fixed therein 2e are formed. Mounting device for a geothermal probe 1 according to one of the preceding claims, characterized in that the Erdrakete 5 operated electrically or hydraulically or pneumatically or in a combination of the foregoing. Mounting device for a geothermal probe 1 according to one of the preceding claims, characterized in that a Verfüllleitung is provided which for filling the created by the displacement of the soil free space with a backfill material 7 serves. Method for introducing a geothermal probe 2 into the ground using an installation device for a geothermal probe 1 according to one of claims 1 to 12, wherein the mounting device for a geothermal probe 1 is provided and placed at the Einbringort, then subsequently to introduce the geothermal probe 2 in the ground the earth rocket 5 operated and by displacing the soil a free space is created, in which the installation device for a geothermal probe 1 penetrates until the desired depth of penetration into the soil is reached. The method of claim 13, wherein the ground rocket 5 after reaching the desired insertion depth of the mounting device for a geothermal probe 1 remains in the space created by displacement of the soil and the means 5a for powering the Earth Rocket 5 for introducing the filling material 7 is used in the remaining free space. Device for obtaining or storing geothermal heat with at least one geothermal probe 2 , which is introduced into the ground according to one of claims 13 or 14.

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