Economical medium-deep layer and shallow layer geothermal energy combined heat supply device

Abstract

The utility model belongs to the technical field of geothermal energy, and particularly relates to an economical medium-deep layer and shallow layer geothermal energy combined heat supply device which comprises a heat storage tank, a heat transfer pipe and a return pipe are arranged on the heat storage tank, a heat supply pipe is connected between the heat transfer pipe and the return pipe, a threaded pipe is arranged in an inner cavity of the heat storage tank, and the threaded pipe is connected with the return pipe. A first water inlet pipe and a first water drainage pipe are connected to the threaded pipe, a heated medium can be conveyed into the heat storage tank through the threaded pipe, a second water inlet pipe and a second water drainage pipe which are arranged on the heat storage tank, and heat supply and heating are provided for a user through a heat supply pipe. The medium after heat exchange flows into the second drainage pipe through the return pipe and enters the shallow geothermal pipe for cyclic heating, the threaded pipe exchanges deep geothermal heat out through the first water inlet pipe, the second drainage pipe and the deep geothermal pipe and heats the medium in the heat storage tank, and the medium in the heat storage tank is heated through the combination of the two modes of geothermal heat. The use efficiency of the terrestrial heat can be greatly improved, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of geothermal energy, in particular to an economical medium-deep layer and shallow layer geothermal energy combined heating device. Background Art

[0002] At present, my country's utilization of medium and deep geothermal energy mainly adopts the method of directly exploiting medium and deep geothermal water and extracting it through pipelines, that is, in areas with rich geothermal water resources, geothermal wells are dug to directly extract underground hot water; among them, medium and deep interference-free geothermal energy heating technology refers to drilling holes 2000-3000m underground through drilling rigs, installing closed metal heat exchanger devices in the holes, injecting heat exchange media into the metal heat exchanger devices, and transferring the heat of the underground rock and soil layers through convection and heat conduction to provide heating to users; among them, shallow geothermal energy, also known as shallow geothermal energy, refers to the thermal energy resources inside the earth within a certain depth range below the surface, generally in the constant temperature zone to a burial depth of 200m, with a temperature below 25°C, and having development and utilization value under current technical and economic conditions.

[0003] In the prior art, the deep and shallow geothermal energy are separately developed and used, which requires an additional set of equipment for use, which increases the cost. To address the above problem, an economical deep and shallow geothermal energy combined heating device is needed. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the problems existing in the existing economical deep and shallow geothermal energy combined heating devices, the utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide an economical medium-deep and shallow geothermal energy combined heating device. The heated medium can be transported to the heat storage tank through the threaded pipe, the second water inlet pipe and the second drain pipe arranged on the heat storage tank, and the user can be provided with heating and heating through the heating pipe. After the heat exchange is completed, the medium flows into the second drain pipe through the reflux pipe and enters the shallow geothermal pipe for circulating heating. The threaded pipe exchanges the deep geothermal heat through the first water inlet pipe, the second drain pipe and the deep geothermal pipe, and heats the medium in the heat storage tank. By combining the two types of geothermal energy, the utilization efficiency of geothermal energy can be greatly improved and costs can be saved.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] An economical medium-deep and shallow geothermal energy combined heating device, comprising a heat storage tank; a heat transfer pipe and a return pipe are provided on the heat storage tank, a heat supply pipe is connected between the heat transfer pipe and the return pipe, a threaded pipe is provided in the inner cavity of the heat storage tank, a first water inlet pipe and a first water discharge pipe are connected to the threaded pipe, the first water inlet pipe and a first row of pipes are connected to the deep geothermal pipe, a second water inlet pipe is provided on the side wall of the heat storage tank, and the second water discharge pipe is connected to the shallow geothermal pipe.

[0009] As a preferred solution of an economical medium-deep and shallow geothermal energy combined heating device described in the utility model, a water pump is installed between the heat storage tank and the heat transfer pipe, the water inlet end of the water pump is connected to the heat storage tank through a pipeline, and the water discharge end of the water pump is connected to the heat transfer pipe.

[0010] As a preferred solution of an economical medium-deep and shallow geothermal energy combined heating device described in the utility model, the water inlet end of the heating pipe is connected to the heat transfer pipe, and the drainage end of the heating pipe is connected to the return pipe.

[0011] As a preferred solution of the economical medium-deep and shallow geothermal energy combined heating device described in the utility model, the return pipe passes through the heat storage tank and is connected to the second drainage pipe.

[0012] As a preferred solution of the economical medium-deep and shallow geothermal energy combined heating device described in the utility model, the threaded pipe is located in the inner cavity of the heat storage tank, and the outer wall of the threaded pipe is located in the inner cavity of the heat storage tank.

[0013] As a preferred solution of the economical medium-deep and shallow geothermal energy combined heating device described in the utility model, wherein: the cross-section of the heat storage tank is specifically a hollow cylinder. Compared with the prior art, the beneficial effects of the utility model are: the heated medium can be transported to the heat storage tank through the threaded pipe, the second water inlet pipe and the second drain pipe arranged on the heat storage tank, and the user is provided with heating and heating through the heating pipe. After the heat exchange is completed, the medium flows into the second drain pipe through the return pipe and enters the shallow geothermal pipe for circulation heating. The threaded pipe exchanges the deep geothermal heat through the first water inlet pipe, the second drain pipe and the deep geothermal pipe, and heats the medium in the heat storage tank. By combining the two types of geothermal, the utilization efficiency of geothermal heat can be greatly improved and the cost can be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the heat storage tank of the utility model;

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the threaded pipe of the utility model.

[0019] In the figure; 100 heat storage tank, 110 heat transfer pipe, 120 return pipe, 130 heating pipe, 140 water pump, 200 threaded pipe, 210 first water inlet pipe, 220 first drainage pipe, 230 deep geothermal pipe, 240 second water inlet pipe, 250 second drainage pipe, 260 shallow geothermal pipe. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0023] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] The utility model provides the following technical solutions: an economical medium-deep and shallow geothermal energy combined heating device, during use, the heated medium can be transported to the heat storage tank through the threaded pipe, the second water inlet pipe and the second drain pipe arranged on the heat storage tank, and the user is provided with heating and heating through the heating pipe. After the heat exchange is completed, the medium flows into the second drain pipe through the return pipe and enters the shallow geothermal pipe for circulating heating. The threaded pipe exchanges the deep geothermal heat through the first water inlet pipe, the second drain pipe and the deep geothermal pipe, and heats the medium in the heat storage tank. By combining the two types of geothermal energy, the utilization efficiency of geothermal energy can be greatly improved, and the cost can be saved.

[0025] Figure 1-Figure 4 The figure shows a schematic diagram of the structure of the first embodiment of an economical medium-deep and shallow geothermal energy combined heating device of the utility model. Figure 1-Figure 4 , an economical medium-deep and shallow geothermal energy combined heating device in this embodiment, the main part of which includes a heat storage tank 100;

[0026] The heat storage tank 100 is provided with a heat transfer pipe 110 and a return pipe 120, a heat supply pipe 130 is connected between the heat transfer pipe 110 and the return pipe 120, a threaded pipe 200 is provided in the inner cavity of the heat storage tank 100, a first water inlet pipe 210 and a first water discharge pipe 220 are connected to the threaded pipe 200, the first water inlet pipe 210 and the first row of pipes are connected to the deep geothermal pipe 230, a second water inlet pipe 240 is provided on the side wall of the heat storage tank 100, and the second water discharge pipe is connected to the shallow geothermal pipe 260;

[0027] A water pump 140 is installed between the heat storage tank 100 and the heat transfer pipe 110. The water inlet end of the water pump 140 is connected to the heat storage tank 100 through a pipeline, and the water discharge end of the water pump 140 is connected to the heat transfer pipe 110. The water inlet end of the heat supply pipe 130 is connected to the heat transfer pipe 110, and the water discharge end of the heat supply pipe 130 is connected to the return pipe 120. The return pipe 120 passes through the heat storage tank 100 and is connected to the second drain pipe 250. The threaded pipe 200 is located in the inner cavity of the heat storage tank 100, and the outer wall of the threaded pipe 200 is located in the inner cavity of the heat storage tank 100. The cross section of the heat storage tank 100 is specifically a hollow cylinder. The heat storage tank 100 is used to store heat exchange medium, so as to achieve the effect of storing heat. The heat transfer pipe 110 is used to connect the heat supply pipe 130 and the heat storage tank 100. The flow pipe 120 is used to connect the heat supply pipe 130 and the second drainage pipe 250, the water pump 140 is used to realize the circulation of the medium in the heat storage tank 100, the threaded pipe 200 is used to heat the medium in the heat storage tank 100, the first water inlet pipe 210 is used to connect the threaded pipe 200 and the deep geothermal pipe 230, and realize the heating medium entering the threaded pipe 200, so as to realize the heating of the heat exchange medium in the heat storage tank 100, the deep geothermal pipe 230 is used to heat the heat exchange medium through geothermal heat, the second water pipe is used to connect the heat storage tank 100 and the shallow geothermal pipe 260, the second drainage pipe 250 is used to connect the return pipe 120 and the shallow geothermal pipe 260, and the shallow geothermal pipe 260 is used to heat the heat exchange medium through shallow geothermal heat;

[0028] Combination Figure 1-Figure 4 The present embodiment is an economical medium-deep and shallow geothermal energy combined heating device, and the specific working principle is as follows: the threaded pipe 200 and the second water inlet pipe 240 and the second drain pipe 250 arranged on the heat storage tank 100 can transport the heated medium to the heat storage tank 100, and provide heating and heating to the user through the heating pipe 130. After the heat exchange is completed, the medium flows into the second drain pipe 250 through the return pipe 120 and enters the shallow geothermal pipe 260 for circulation heating. The threaded pipe 200 exchanges the deep geothermal heat through the first water inlet pipe 210, the second drain pipe 250 and the deep geothermal pipe 230, and heats the medium in the heat storage tank 100. By combining the two types of geothermal energy, the utilization efficiency of geothermal energy can be greatly improved and the cost can be saved.

[0029] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An economical medium-deep and shallow geothermal energy combined heating device, characterized by: comprising a heat storage tank (100); The heat storage tank (100) is provided with a heat transfer pipe (110) and a return pipe (120), a heat supply pipe (130) is connected between the heat transfer pipe (110) and the return pipe (120), a threaded pipe (200) is provided in the inner cavity of the heat storage tank (100), a first water inlet pipe (210) and a first water discharge pipe (220) are connected to the threaded pipe (200), the first water inlet pipe (210) and the first row of pipes are connected to a deep geothermal pipe (230), a second water inlet pipe (240) is provided on the side wall of the heat storage tank (100), and the second water discharge pipe is connected to a shallow geothermal pipe (260).

2. An economical medium-deep and shallow geothermal energy combined heating device according to claim 1, characterized in that: A water pump (140) is installed between the heat storage tank (100) and the heat transfer pipe (110); a water inlet end of the water pump (140) is connected to the heat storage tank (100) through a pipeline, and a water discharge end of the water pump (140) is connected to the heat transfer pipe (110).

3. The economical medium-deep and shallow geothermal energy combined heating device according to claim 1 is characterized by: The water inlet end of the heat supply pipe (130) is in communication with the heat transfer pipe (110), and the water discharge end of the heat supply pipe (130) is in communication with the return pipe (120).

4. The economical medium-deep and shallow geothermal energy combined heating device according to claim 1 is characterized by: The return pipe (120) passes through the heat storage tank (100) and is in communication with the second drain pipe (250).

5. The economical medium-deep and shallow geothermal energy combined heating device according to claim 1 is characterized by: The threaded tube (200) is located in the inner cavity of the heat storage tank (100), and the outer wall of the threaded tube (200) is located in the inner cavity of the heat storage tank (100).

6. The economical medium-deep and shallow geothermal energy combined heating device according to claim 1 is characterized by: The cross section of the heat storage tank (100) is specifically a hollow cylinder.

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