阅读说明：本技术 一种无干扰地热孔取热装置 (Interference-free geothermal hole heating device ) 是由 李建峰 王连庆 蔡菁 于 2020-06-02 设计创作，主要内容包括：本发明深层地热孔取热领域,公开了一种无干扰地热孔取热装置,设置有设置在地下热岩土内的换热器管,聚热定向器一体安装在所述换热器管的前端；过滤网管套装在所述换换热管及吸热头的内部；吸水网管套装在所述过滤网管的后端。通过隔热复合管,将热饱和介质和冷介质隔离开,从而降低内管向外部取热介质的热量流失；通过复合内管光滑内壁和过滤网管的过滤,增加换热介质在管内的流速与流量,从而使输出换热介质热量均衡且稳定增加；通过内管底部增设吸热头与外换热器管底部的聚热定向器充分结合,从而增加换热介质在加热段的换热接触面,增加换热效果。(The invention discloses an interference-free geothermal hole heating device, belonging to the field of deep geothermal hole heating, and comprising a heat exchanger pipe arranged in underground hot rock soil, wherein a heat-collecting director is integrally arranged at the front end of the heat exchanger pipe; the filter net pipe is sleeved inside the heat exchange pipe and the heat absorption head; the water absorbing net pipe is sleeved at the rear end of the filtering net pipe. The heat saturated medium and the cold medium are isolated through the heat insulation composite pipe, so that the heat loss of the heat medium taken from the inner pipe to the outside is reduced; the flow velocity and the flow of the heat exchange medium in the composite inner tube are increased through the filtration of the smooth inner wall of the inner tube and the filter net tube, so that the heat of the output heat exchange medium is balanced and stably increased; the heat absorption head is additionally arranged at the bottom of the inner pipe and is fully combined with the heat gathering director at the bottom of the outer heat exchanger pipe, so that the heat exchange contact surface of a heat exchange medium in the heating section is increased, and the heat exchange effect is improved.)

1. An interference-free geothermal hole heating device is characterized in that the interference-free geothermal hole heating device is provided with a heat exchanger pipe arranged in underground hot rock soil;

a heat collecting director integrally installed at the front end of the heat exchanger tube;

the filter net pipe is sleeved inside the heat exchanger pipe;

and the water absorbing net pipe is sleeved at the rear end of the filtering net pipe.

2. An undisturbed geothermal hole heating apparatus as claimed in claim 1 wherein the forward end of the heat exchanger tube is fitted with a heat absorption head.

3. An undisturbed geothermal hole heating apparatus as claimed in claim 1 wherein a holder is externally mounted to the tube of the suction mesh.

4. An undisturbed geothermal hole heating apparatus as claimed in claim 1 wherein the heat exchanger tubes are heat conductive metal tubes.

5. An undisturbed geothermal port heating apparatus as claimed in claim 1 wherein the exterior of the heat exchanger tubes are fitted with seals.

6. An undisturbed geothermal hole heat sink as in claim 1 further wherein the undisturbed geothermal hole heat sink is further provided with a composite tube effective to isolate the saturated hot and cold media on the outer sides.

Technical Field

The invention belongs to the field of deep geothermal hole heat taking, and particularly relates to an interference-free geothermal hole heat taking device.

Background

At present, geothermal holes are drilled holes for exploiting geothermal resources below the surface of the earth, and the geothermal heat extraction process needs to be completed through a geothermal heat exchanger tube. Heat exchange media of the existing heat exchanger pipe enter through the annular space of the inner pipe and the outer pipe, and are in vertical surface contact with the heat exchanger sleeve through middle-deep rock soil, heat of the deep rock soil is conducted to a circulating medium through the outer wall of the heat exchanger pipe, and heat saturated media absorbing the heat enter the composite inner pipe at the bottom of the heat exchanger pipe and return out through the inner pipe.

When the medium after the heat transfer is upwards discharged along the inner wall, because the heat transfer medium temperature of the outer side of the upper end of the inner pipe is lower, the heat conduction can be generated at the temperature of the medium when the medium is upwards discharged, so that the heat loss of the upwards heat saturated medium is larger, and the effect is poorer.

Through the above analysis, the problems and defects of the prior art are as follows: the heat exchange medium outside the upper end of the inner pipe is low in temperature, heat conduction can be generated when the medium is discharged upwards, the heat loss of the upwards heat saturated medium is large, and the effect is poor.

The difficulty in solving the above problems and defects is:

1. the upward resistance of the heat saturated medium is large;

2. the heat loss of the heat saturated medium is large;

3. the strength of the common PE pipe is reduced after being heated, and the extrusion phenomenon is easy to occur;

4. the design flow standard cannot be met.

The significance of solving the problems and the defects is as follows:

1. the smoothness of the inner wall of the composite inner pipe is improved, and the problem of resistance of the upward heat medium of the inner pipe is effectively solved, so that the flow velocity of the upward heat medium of the inner pipe is greatly improved;

2. because the resistance of the inner pipe is reduced, the flow velocity is increased, and the retention time of the heat medium in the upward section of the inner pipe is greatly reduced, so that the heat loss of the upward heat saturated medium is reduced to the minimum;

3. the anti-extrusion capacity of the inner pipe made of the composite material is greatly enhanced, so that the phenomenon of extrusion flattening or damage is not easy to occur;

4. the inner tube intensity increases, and the smooth resistance of inner wall increases, and the flow reaches design standard and repeatedly usable.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides an interference-free geothermal hole heating device.

The invention is realized by the following that the interference-free geothermal hole heating device is provided with a heat exchanger pipe arranged in underground hot rock soil, and the interference-free geothermal hole heating device is characterized in that

A heat collecting director integrally installed at the front end of the heat exchanger tube;

the filter net pipe is sleeved inside the heat exchanger pipe;

and the water absorbing net pipe is sleeved at the rear end of the filtering net pipe.

Further, the front end of the heat exchanger tube is provided with a heat absorption head.

Further, a fixer is arranged outside the water absorbing net pipe.

Further, the heat exchanger tube is a heat-conducting metal tube.

Further, a sealing device is arranged outside the heat exchanger tube.

Furthermore, the non-interference geothermal hole heating device is also provided with a heat insulation composite pipe which effectively isolates or blocks the saturated heat medium and the cold medium on the inner side and the outer side of the inner pipe.

By combining all the technical schemes, the invention has the advantages and positive effects that:

firstly, a heat saturated medium and a cold medium are isolated through a heat insulation composite pipe, so that the heat loss of a heat taking medium in an inner pipe is reduced;

secondly, the flow velocity and the flow of the heat exchange medium in the composite inner tube are increased through the filtration of the smooth inner wall of the inner tube and the filter net tube, so that the heat of the output heat exchange medium is balanced and stably increased;

and thirdly, the heat absorption head additionally arranged at the bottom of the inner pipe is fully combined with the heat gathering director at the bottom of the outer heat exchanger pipe, so that the heat exchange contact surface of the heat exchange medium at the bottom of the inner pipe end is increased, and the heat exchange effect is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.

Fig. 1 is a schematic structural view of a non-interference geothermal hole heating device according to an embodiment of the present invention.

In the figure: 1. underground hot rock soil; 2. a heat exchanger tube; 3. a heat collecting director; 4. a heat absorption head; 5. filtering the network management; 6. a holder; 7. and (4) a water absorbing net pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Aiming at the problems in the prior art, the invention provides an interference-free geothermal hole heating device to solve the technical problems of easy heat loss, poor heat effect, insufficient heat strength and the like when a medium is discharged, and the invention is described in detail by combining the attached drawings.

The heat exchanger tube is a heat-conducting metal tube, and is provided with an outer tube director sealing device for sealing the bottom of the outer tube heat exchanger tube; an inner pipe heat taking device is arranged above the sealing device of the outer heat exchanger pipe director, and the bottom of the inner pipe heat absorption head and the outer heat exchanger pipe heat gathering director are tightly combined with each other to effectively conduct heat.

The saturated heat medium and the cold medium on the inner side and the outer side of the inner pipe are effectively isolated or blocked by the heat insulation composite pipe, the heat insulation performance of the inner pipe composite pipe is improved, the heat loss of the low saturated heat medium is reduced, meanwhile, the heat absorption head, the filtering net pipe and the water absorption net pipe are arranged at the lower bottom of the inner pipe, so that the heat saturated medium entering the inner pipe through the outer heat exchanger pipe is filtered by the filtering net pipe and then flows upwards along the flow channel wall to enter the inner pipe for upwards outputting, meanwhile, the heat medium is contacted with the inner pipe heat absorption head and the heat collection director when entering the heat absorption pipe and the inner pipe, the heat conducted by the heat collection director of the outer heat exchanger pipe is absorbed, the heat is transferred to the heat taking device of the inner pipe heat absorption head, the heat exchange efficiency at the bottom of the inner pipe is improved, and the heat exchange.

The heat insulation pipe is a solid composite inner pipe, the inner surface of the pipe wall is smooth, the water resistance is ultra-small, and the heat transmission quantity is 3 times that of a common pipe. The heat exchanger tube, the fixer, the inner tube heat absorption head and the external heat gathering director are all made of titanium alloy and red copper.

The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.