Heat exchange device, heat exchange device assembly and heat exchange assembly used in middle-deep layer well

Abstract

The utility model provides a heat exchange device used in a middle-deep layer well, a heat exchange device assembly and a heat exchange assembly, the heat exchange device used in the middle-deep layer well comprises a heat exchange tube, a plurality of heat exchange holes are arranged on the side wall of the heat exchange tube, and the heat exchange tube is made of metal materials; the connecting pipe partially extends into the top end of the heat exchange pipe and is connected with the heat exchange pipe, and the connecting pipe is made of a PE or PPH material; and the quick connection structure is arranged at the bottom end of the heat exchange tube. According to the technical scheme, the problems that in the prior art, the heat exchange assembly lowering efficiency is low, and the manual labor intensity is large can be effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of medium-deep groundwater extraction, specifically to a heat exchange device, heat exchange device components, and heat exchange assembly for use in medium-deep wells. Background Technology

[0002] Medium-deep heat exchange wells require the installation of concentric heat exchange pipes (heat exchange assemblies) to achieve medium circulation and heat absorption in order to develop geothermal resources. Due to the depth of the well, several pipes and the lowest heat exchange device need to be connected together to reach the required depth.

[0003] The heat exchange assembly is always subject to the buoyancy of water. Since the heat exchange assembly is usually made of PE material, the buoyancy of the heat exchange assembly is very large, which sometimes makes it impossible to lower the heat exchange assembly into the well. Forcing it to be lowered will also cause the heat exchange assembly to be easily damaged due to the buoyancy.

[0004] To address these issues, existing technologies typically involve welding a counterweight to the bottom of the heat exchanger. This counterweight adjusts the relationship between the weight and buoyancy of the entire heat exchange assembly, ensuring its smooth lowering into the well. However, this process results in low lowering efficiency and high manual labor intensity. Utility Model Content

[0005] The main objective of this invention is to provide a heat exchange device, heat exchange device components, and heat exchange assembly for use in medium-deep wells, so as to solve the problems of low efficiency in lowering heat exchange assemblies and high manual labor intensity in the prior art.

[0006] To achieve the above objectives, according to one aspect of the present invention, a heat exchange device for use in medium-deep wells is provided, comprising: a heat exchange tube having a plurality of heat exchange holes provided on its sidewall, the heat exchange tube being made of a metal material; a connecting pipe extending partially into the top end of the heat exchange tube and connecting to the heat exchange tube, the connecting pipe being made of PE or PPH material; and a quick-connect structure disposed at the bottom end of the heat exchange tube.

[0007] In one embodiment, the quick-connect structure includes one of a snap-fit ​​structure, a threaded structure, or a plug-in structure.

[0008] In one embodiment, the quick-connect structure includes two mounting plates disposed at the bottom end of the heat exchange tube and spaced apart, the mounting plates having mounting holes, the mounting holes on the two mounting plates being opposite each other.

[0009] In one embodiment, the heat exchange tube has multiple sets of heat exchange holes spaced apart on its sidewall in the axial direction, each set of heat exchange holes including multiple heat exchange holes spaced apart along the circumferential direction of the heat exchange tube.

[0010] In one embodiment, the heat exchange holes of two adjacent sets of heat exchange holes are staggered in the circumferential direction of the heat exchange tube.

[0011] In one embodiment, the bottom end of the connecting pipe is connected to the top end of the heat exchange pipe by a thread.

[0012] In one embodiment, the portion of the connecting pipe that overlaps with the top of the heat exchange pipe is provided with a pin arranged in the horizontal direction.

[0013] According to another aspect of the present invention, a heat exchange device assembly for use in medium-deep wells is provided, comprising: a heat exchange device, wherein the heat exchange device is the aforementioned heat exchange device; and a counterweight, comprising a counterweight body and a mating structure located at the top of the counterweight body, wherein the mating structure is connected to a quick-connect structure so that the counterweight is connected to the heat exchange device.

[0014] In one embodiment, the mating structure includes one of a snap-fit ​​structure, a threaded structure, or a plug-in structure.

[0015] According to a final aspect of the present invention, a heat exchange assembly for use in medium-deep wells is provided, comprising: a pipe body comprising multiple sequentially connected pipe units, the pipe units being made of PE or PPH material; and a heat exchange device assembly, the heat exchange device assembly being the aforementioned heat exchange device assembly, wherein the connecting pipe of the heat exchange device of the heat exchange device assembly is connected to the bottom of the pipe body by heat fusion.

[0016] By applying the technical solution of this utility model, a pre-set weight of counterweight is first quickly installed at the bottom of the heat exchange tube using a quick-connect structure to form a heat exchange device assembly. Then, the tube body is connected to the top of the connecting tube via heat fusion. Next, the remaining tube body is connected section by section to the preceding structure to finally form the heat exchange assembly. This structure uses a mechanical connection to quickly and securely connect the counterweight to the heat exchange device, eliminating the need for slow welding processes. This improves the efficiency of lowering the heat exchange assembly and makes connecting the two components easier for operators, thus reducing labor intensity.

[0017] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1A three-dimensional structural schematic diagram of an embodiment of a heat exchange device for use in medium-deep wells according to the present invention is shown;

[0020] Figure 2 It shows Figure 1 A top view of a heat exchange device used in medium-deep wells;

[0021] Figure 3 It shows Figure 2 A cross-sectional view along the AA direction of a heat exchange device used in medium-deep wells;

[0022] Figure 4 A perspective structural schematic diagram of an embodiment of a heat exchanger assembly for use in medium-deep wells according to the present invention is shown;

[0023] Figure 5 It shows Figure 4 A three-dimensional structural diagram of the intermediate counterweight block for a heat exchanger assembly used in medium-deep wells; and

[0024] Figure 6 It shows Figure 4 A three-dimensional structural diagram of the end counterweight of a heat exchanger assembly used in medium-deep wells.

[0025] The above figures include the following reference numerals:

[0026] 10. Heat exchange tube; 11. Heat exchange hole; 12. Heat exchange hole group; 20. Connecting pipe; 30. Quick-connect structure; 31. Mounting plate; 311. Mounting hole; 40. Pin; 50. Heat exchange device; 60. Counterweight; 61. Counterweight body; 611. Intermediate counterweight block; 612. End counterweight block; 613. Slot; 614. Insert block; 62. Mating structure. Detailed Implementation

[0027] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] like Figures 1 to 4 As shown, the heat exchange device for medium-deep wells in this embodiment includes: a heat exchange tube 10, a connecting pipe 20, and a quick-connect structure 30. The heat exchange tube 10 has multiple heat exchange holes 11 on its sidewall and is made of metal. The connecting pipe 20 extends into the top of the heat exchange tube 10 and connects to it; the connecting pipe 20 is made of PE or PPH material. The quick-connect structure 30 is located at the bottom end of the heat exchange tube 10.

[0032] Applying the technical solution of this embodiment, firstly, a pre-set weight of counterweight is quickly installed at the bottom end of the heat exchange tube 10 via a quick-connect structure 30 to form a heat exchange device assembly. Then, the tube body is connected to the top end of the connecting tube 20 by heat fusion. Next, the remaining tube body is connected section by section to the preceding structure to finally form the heat exchange assembly. The above structure uses a mechanical connection structure to quickly and firmly connect the counterweight to the heat exchange device, eliminating the need for a slower welding process. This improves the efficiency of lowering the heat exchange assembly and makes it easier for operators to connect the two components, thereby reducing labor intensity.

[0033] like Figures 1 to 5 As shown, in this embodiment, the quick-connect structure 30 is a plug-in structure. Specifically, the plug-in structure can be a mortise and tenon joint structure, a protrusion and groove structure, or a connecting slot structure. The above-mentioned plug-in structure is simple, convenient for operators to assemble, and further improves assembly efficiency. Of course, in other embodiments not shown in the figure, the quick-connect structure 30 can also be a snap-fit ​​structure or a threaded structure.

[0034] like Figures 1 to 5 As shown, in this embodiment, the quick-connect structure 30 includes two mounting plates 31 arranged at intervals at the bottom end of the heat exchange tube 10. Each mounting plate 31 has mounting holes 311, and the mounting holes 311 on the two mounting plates 31 are opposite each other. Specifically, the counterweight is provided with an insert plate, which has clearance holes. During installation, the counterweight insert plate is inserted between the two mounting plates 31, making the clearance holes and mounting holes 311 coaxial. Bolts are then inserted into the clearance holes and mounting holes 311, and finally tightened with nuts. This installation method is simple and efficient. Furthermore, if the counterweight weight is incorrect, it can be easily adjusted by disassembly.

[0035] like Figure 1 and Figure 3 As shown, in this embodiment, the heat exchange tube 10 has multiple sets of heat exchange hole groups 12 spaced apart on its sidewall in the axial direction. Each set of heat exchange hole groups 12 includes multiple heat exchange holes 11 spaced apart along the circumferential direction of the heat exchange tube 10. This structure allows water in the heat exchange assembly to enter the formation at the bottom of the medium-deep well evenly, making full use of geothermal energy. Furthermore, it allows hot water in the formation surrounding the medium-deep well to be extracted evenly, increasing the output of hot water.

[0036] like Figure 1 and Figure 3 As shown, in this embodiment, the heat exchange holes 11 of two adjacent heat exchange hole groups 12 are staggered in the circumferential direction of the heat exchange tube 10. This structure reduces the number of heat exchange holes 11 while ensuring uniformity of water pumping and injection, thus facilitating manufacturing.

[0037] In this embodiment, the bottom end of the connecting pipe 20 is connected to the top end of the heat exchange pipe 10 by a thread (not shown in the figure). The above structure is simple and the connection is highly reliable.

[0038] like Figure 1 and Figure 3 As shown, in this embodiment, a pin 40 arranged in the horizontal direction is provided at the portion where the bottom end of the connecting pipe 20 overlaps with the top end of the heat exchange pipe 10. The above structure further increases the reliability of the connection between the connecting pipe 20 and the heat exchange pipe 10, so that the connection can still be made even if the connecting pipe 20 and the heat exchange pipe 10 slip.

[0039] like Figures 4 to 6As shown, this application also provides a heat exchange device assembly for use in medium-deep wells. An embodiment of the heat exchange device assembly for use in medium-deep wells according to this application includes: a heat exchange device 50 and a counterweight 60. The heat exchange device 50 is the aforementioned heat exchange device. The counterweight 60 includes a counterweight body 61 and a mating structure 62 located at the top of the counterweight body 61. The mating structure 62 is connected to a quick-connect structure 30 to connect the counterweight 60 to the heat exchange device 50. Since the aforementioned heat exchange device has the advantages of improving the efficiency of lowering the heat exchange assembly and reducing manual labor intensity, the heat exchange device assembly having it also has the aforementioned advantages.

[0040] like Figures 4 to 6 As shown, in this embodiment, the mating structure 62 is a plug-in structure. Of course, in other embodiments not shown in the figure, the mating structure 62 can also be a snap-fit ​​structure or a threaded structure corresponding to the quick-connect structure 30.

[0041] Specifically, in this embodiment, the mating structure 62 is the aforementioned insert plate.

[0042] It should be noted that the counterweight body 61 may include multiple counterweight blocks that are plugged in. For example... Figures 4 to 6 As shown, in this embodiment, the counterweight body 61 includes an intermediate counterweight block 611 and an end counterweight block 612. An insert plate is disposed at the top of the intermediate counterweight block 611, and the bottom of the intermediate counterweight block 611 and the end counterweight block 612 are connected via a quick-connect structure. This quick-connect structure includes a slot 613 disposed on the intermediate counterweight block 611 and an insert 614 disposed on the end counterweight block 612. The insert 614 extends into the slot 613 and is then fixedly connected by a pin. Of course, in other embodiments not shown in the figure, there are multiple intermediate counterweight blocks 611, with the mating structure 62 disposed on the uppermost intermediate counterweight block 611.

[0043] This application also provides a heat exchange assembly for use in medium-deep wells. An embodiment of the heat exchange assembly according to this application includes a pipe body and a heat exchange device assembly. The pipe body comprises multiple sequentially connected pipe units, each made of PE or PPH material. The heat exchange device assembly is the aforementioned heat exchange device assembly, with the connecting pipe 20 of the heat exchange device 50 connected to the bottom of the pipe body via a heat fusion method. This structure offers the advantages of improving the efficiency of lowering the heat exchange assembly and reducing manual labor intensity.

[0044] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0045] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0046] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A heat exchange device for use in medium-deep wells, characterized in that, include: A heat exchange tube (10) is provided with a plurality of heat exchange holes (11) on its side wall, and the heat exchange tube (10) is made of metal material; A connecting pipe (20) extends partially into the top end of the heat exchange tube (10) and is connected to the heat exchange tube (10). The connecting pipe (20) is made of PE or PPH material. A quick-connect structure (30) is provided at the bottom end of the heat exchange tube (10). The quick-connect structure (30) includes two mounting plates (31) arranged at intervals at the bottom end of the heat exchange tube (10). The mounting plates (31) are provided with mounting holes (311), and the mounting holes (311) on the two mounting plates (31) are opposite to each other.

2. The heat exchange device for use in medium-deep wells according to claim 1, characterized in that, The quick-connect structure (30) includes one of the following: snap-fit ​​structure, threaded structure, or plug-in structure.

3. The heat exchange device for use in medium-deep wells according to claim 1, characterized in that, In the axial direction of the heat exchange tube (10), the sidewall of the heat exchange tube (10) has a plurality of sets of heat exchange holes (12) spaced apart, each set of heat exchange holes (12) including a plurality of heat exchange holes (11) spaced apart along the circumferential direction of the heat exchange tube (10).

4. The heat exchange device for medium-deep wells according to claim 3, characterized in that, The heat exchange holes (11) of two adjacent heat exchange hole groups (12) are staggered in the circumferential direction of the heat exchange tube (10).

5. The heat exchange device for use in medium-deep wells according to claim 1, characterized in that, The bottom end of the connecting pipe (20) is connected to the top end of the heat exchange pipe (10) by a thread.

6. The heat exchange device for use in medium-deep wells according to claim 5, characterized in that, The bottom end of the connecting pipe (20) overlaps with the top end of the heat exchange pipe (10) and is provided with a pin (40) arranged in the horizontal direction.

7. A heat exchanger assembly for use in medium-deep wells, comprising: A heat exchange device (50), characterized in that the heat exchange device (50) is the heat exchange device according to any one of claims 1 to 6; The counterweight (60) includes a counterweight body (61) and a mating structure (62) located at the top of the counterweight body (61), the mating structure (62) being connected to the quick-connect structure (30) so that the counterweight (60) is connected to the heat exchange device (50).

8. The heat exchange device (50) assembly for use in medium-deep wells according to claim 7, characterized in that, The mating structure (62) includes one of the following: snap-fit ​​structure, threaded structure, or plug-in structure.

9. A heat exchange assembly for use in medium-deep wells, comprising: The pipe body comprises multiple sequentially connected pipe units, the pipe units being made of PE or PPH material; A heat exchange device assembly, characterized in that the heat exchange device assembly is the heat exchange device assembly according to claim 7 or 8, wherein the connecting pipe (20) of the heat exchange device (50) of the heat exchange device assembly is connected to the bottom of the pipe body by heat fusion.

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