Geothermal heat storage intelligent monitoring heat exchange device

Abstract

The application provides a geothermal heat storage intelligent monitoring heat exchange device, which comprises an outer pipe and an inner pipe; the outer pipe comprises a vertical section and a tapered section, and the tapered section is tapered from top to bottom; a block is arranged in the tapered section; the block is spherical, comprises a shell, a through hole is formed in the shell, and a counterweight is arranged in the through hole; the counterweight is connected with the inner side surface of the shell through an elastic element A, and the size of the counterweight is smaller than that of the lower end of the tapered section; when the counterweight is arranged in the through hole, the block is spherical, and the elastic element A is in a compressed state at this time; a groove is arranged on the side surface of the counterweight, and a blocking strip is rotatably arranged in the groove; a flow-through port and an intercepting net are arranged on the side surface of the inner pipe, the intercepting net is arranged around the flow-through port, and the intercepting net can rotate. The heat exchange device has the advantages of reasonable design, high practicability and long service life. The heat exchange device can reduce the influence of the change of the bottom environment on the heat exchanger, and ensure the utilization rate of geothermal heat storage.

Description

Technical Field

[0001] This invention relates to the field of geothermal energy storage application technology, and specifically to a geothermal energy storage intelligent monitoring and heat exchange device. Background Technology

[0002] Geothermal energy, as a clean and renewable energy source, is increasingly being used in heating, power generation, and other fields. Currently, geothermal development mainly focuses on using geothermal energy for heating and cooling, that is, providing energy to heating and power generation systems through heat exchange to achieve functions such as cooling, heating, and power generation.

[0003] Patent application number 201510212099.6 discloses a geothermal heat exchanger comprising a concentric double-tube structure. This structure is vertically buried underground, with the inner tube made of insulating material and the outer tube made of thermally conductive material, facilitating heat preservation of the exchanged medium and reducing energy waste. It also discloses that the lower end of the outer tube is sealed by a plug and a sealing ring, with the plug relying on gravity and water pressure to seal the lower end of the outer tube. A through-hole is provided in the inner tube to prevent sediment from entering. The outer and inner tubes are connected by a flange for easy installation and maintenance. This patent provides... The heat exchanger, with its tubular shape, can be installed more than 200 meters underground. A plug seals the bottom of the outer tube to prevent mud from re-entering and ensure heat exchange efficiency. However, the following problems still exist: First, with prolonged use, fine mud and sand can infiltrate between the outer tube and the plug. When the water pressure at the bottom of the well rises, it may compress the mud, causing the plug to shift and leading to seal failure. Second, fine particles and mud inevitably move with the medium and will still deposit in the inner tube, affecting the flow rate of the medium within it. Summary of the Invention

[0004] In view of this, the present invention provides an intelligent monitoring heat exchange device for geothermal storage, specifically a heat exchange device with a rotatable intercepting net at the flow port of the inner pipe, which includes a shell, a counterweight, and an inner tube. This heat exchange device has the advantages of reasonable design, high practicality, and long service life.

[0005] The technical solution of the present invention is as follows:

[0006] A geothermal storage intelligent monitoring heat exchange device includes an outer pipe and an inner pipe;

[0007] The outer tube includes a vertical section and a tapered section, with the tapered section tapering from top to bottom;

[0008] A seal is installed inside the conical section;

[0009] The plug is spherical and includes a shell with a through hole and a counterweight inside the through hole. The counterweight is connected to the inner side of the shell by an elastic element A, and the size of the counterweight is smaller than the size of the lower end of the tapered section.

[0010] When the counterweight is placed inside the through hole, the seal is spherical, and at this time the elastic element A is in a compressed state;

[0011] The side of the counterweight is provided with a groove, and a stop bar is rotatably installed in the groove;

[0012] When the plug reaches the conical section of the outer pipe and cannot descend further, it impacts the conical section. The impact loosens the friction between the plug and the through hole, and then, under the action of elastic element A, the counterweight detaches from the through hole and continues to descend under its own weight, passing through the conical section and landing on the outside of the outer pipe. During this process, without pressure from the inner side of the through hole, the baffle opens to both sides. As the descent force of the counterweight gradually decreases and the contraction force of elastic element A gradually increases, the baffle gets stuck on the bottom surface of the lower end of the conical section. With the cooperation of the baffle and elastic element A, and the pressure of the medium continuously injected into the plug from the inlet of the outer pipe, the plug can be firmly located inside the conical section. Even if the water pressure at the bottom of the well rises, the plug will not fall off from the conical section, thus extending the service life of the heat exchange device.

[0013] A flow port and a blocking net are provided on the side of the inner tube. The blocking net is located around the flow port and can rotate.

[0014] When the heat-exchanged medium enters through the flow port, the interceptor can block particulate impurities. When there are differences in the amount of particulate impurities on different surfaces of the interceptor as the medium flows, the interceptor can rotate, thereby causing the particulate impurities attached to its exterior to fall off automatically, thus preventing impurities from depositing in the inner tube and keeping the medium at a high flow rate for a long time.

[0015] Preferably, the counterweight is a tungsten alloy block, which will not cause pollution to the well during use.

[0016] Preferably, a magnet A is provided inside the counterweight, and an annular magnet B is provided on the bottom surface of the lower port of the conical section. The magnets A and B work together to not only help the counterweight fall out of the through hole, but also to help improve the stability of the seal within the conical section.

[0017] Preferably, an elastic element B is provided between the stop bar and the groove. When the counterweight is in the through hole, the elastic element B is in a compressed state; when the counterweight leaves the through hole and reaches the outside of the tapered section, the elastic element B returns to a free state, so that the stop bar is in an open state.

[0018] Preferably, the baffle is provided with anti-slip teeth, which contact the bottom end of the tapered section when the baffle is opened.

[0019] Preferably, the outer tube has arc-shaped protrusions on its wall to increase the exchange efficiency between the medium and geothermal energy.

[0020] Preferably, an annular groove is provided on the inner tube, and the annular groove is located around the flow port; a limiting block is provided on the intercepting net, and the limiting block is located inside the annular groove; this arrangement allows the intercepting net to rotate around the flow port, thereby facilitating the shedding of particulate impurities attached to it.

[0021] Preferably, the interception net is either a cone-shaped net or an arc-shaped net.

[0022] Preferably, the interception net is provided with turbulence fins. When the heat-exchanged medium enters the flow port, the force of the liquid flow acts on the turbulence fins, which in turn drives the interception net to rotate.

[0023] Preferably, a silicone pad is provided on the inner side of the conical section. When the sealing reaches the conical section, the silicone pad is located between the sealing and the conical section, which can improve the stability of the sealing within the conical section.

[0024] Compared to existing technologies, the advantages of this invention are as follows: Through the cooperation of the counterweight and the baffle strip located on the counterweight, the seal can be effectively fixed inside the conical section, preventing the seal from loosening or detaching from the conical section and causing sealing failure when the water pressure in the well rises. By setting an intercepting net that can rotate around the flow port, the heat-exchanged medium can continuously maintain a high flow state into the flow port, minimizing the entry of particulate impurities into the inner pipe, ensuring medium flow rate, and improving the utilization efficiency of geothermal energy. These features give the heat exchange device the advantages of reasonable design, high practicality, and long service life. Using this heat exchange device can reduce the impact of changes in the well bottom environment on the heat exchanger and ensure the utilization rate of geothermal storage. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the heat exchange device.

[0027] Figure 2 This is an enlarged view of part M.

[0028] Figure 3 This is an enlarged view of N parts.

[0029] Figure 4 This is a schematic diagram of the sealing structure.

[0030] In the diagram, 1-outer tube, 101-upright section, 102-conical section, 2-inner tube, 3-blocking, 301-shell, 302-through hole, 303-counterweight, 4-elastic element A, 5-magnet A, 6-magnet B, 7-groove, 8-stop bar, 9-elastic element B, 10-anti-slip teeth, 11-protrusion, 12-silicone pad, 13-flow port, 14-interception net, 15-annular groove, 16-limiting block, 17-turbulence fin. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of this invention will be clearly and completely described below in conjunction with the embodiments of this invention. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0032] Combination Figures 1-4 The present invention provides a geothermal storage intelligent monitoring heat exchange device, including an outer pipe 1 and an inner pipe 2. The outer pipe 1 is provided with a flange A and the inner pipe 2 is provided with a flange B. The inner pipe 2 is fitted inside the outer pipe 1 and the flange A and flange B are connected by bolts to realize the connection between the outer pipe 1 and the inner pipe 2.

[0033] The outer tube 1 includes an upright section 101 and a tapered section 102, the tapered section 102 tapering from top to bottom;

[0034] A sealing plug 3 is provided inside the conical section 102;

[0035] The plug 3 is spherical and includes a housing 301. A through hole 302 is provided on the housing 301, and a counterweight 303 is provided in the through hole 302. The counterweight 303 is connected to the inner side of the housing 301 through an elastic member A4, and the size of the counterweight 303 is smaller than the size of the lower port of the tapered section 102.

[0036] The counterweight 303 is a tungsten alloy block, which will not cause pollution to the well during use;

[0037] When the counterweight 303 is placed in the through hole 302, the plug 3 is spherical, and the elastic element A4 is in a compressed state.

[0038] A magnet A5 is provided inside the counterweight 303, and an annular magnet B6 is provided on the bottom surface of the lower port of the tapered section 102. The magnets A5 and B6 work together to not only help the counterweight 303 fall out of the through hole 302, but also help improve the stability of the seal 3 in the tapered section 102.

[0039] The side of the counterweight 303 is provided with a groove 7, and a stop bar 8 is rotatably installed in the groove 7;

[0040] An elastic element B9 is provided between the stop bar 8 and the groove 7. When the counterweight 303 is in the through hole 302, the elastic element B9 is in a compressed state. When the counterweight 303 leaves the through hole 302 and reaches the outside of the tapered section 102, the elastic element B9 returns to a free state, so that the stop bar 8 is in an open state.

[0041] The baffle 8 is provided with anti-slip teeth 10. When the baffle 8 is opened, the anti-slip teeth 10 contact the bottom end of the tapered section 102.

[0042] In this embodiment, both elastic element A4 and elastic element B9 are springs;

[0043] An arc-shaped protrusion 11 is provided on the upright section 101 of the outer pipe 1 to increase the exchange efficiency between the medium and geothermal energy.

[0044] A silicone pad 12 is provided on the inner side of the conical section 102. When the plug 3 reaches the conical section 102, the silicone pad 12 is located between the plug 3 and the conical section 102, which can improve the stability of the plug 3 in the conical section 102.

[0045] When the plug 3 reaches the tapered section 102 of the outer tube 1 and cannot descend further, the plug 3 impacts the silicone pad 12 of the tapered section 102. The impact loosens the friction between the plug 3 and the through hole 302, and then, under the action of the elastic element A4, the counterweight 303 disengages from the through hole 302. Under its own weight, the counterweight 303 continues to descend, passing through the tapered section 102 and located on the outside of the outer tube 1. During this process, without pressure from the inner side of the through hole 302, the baffle 8 opens to both sides; As the downward force of the counterweight 303 gradually decreases while the contraction force of the elastic element A4 gradually increases, the baffle 8 is stuck on the bottom surface of the lower end of the conical section 102. With the cooperation of the baffle 8 and the elastic element A4, and the pressure of the medium continuously injected into the inner part of the outer pipe 1 above the plug 3, the plug 3 can be firmly located in the conical section 102. Even if the water pressure at the bottom of the well rises, the plug 3 will not fall off from the conical section 102, thus extending the service life of the heat exchange device.

[0046] A flow port 13 and an intercepting net 14 are provided on the side of the inner tube 2. The intercepting net 14 is located around the flow port 13 and can rotate.

[0047] An annular groove 15 is provided on the inner tube 2, and the annular groove 15 is located around the flow port 13; a limiting block 16 is provided on the interception net 14, and the limiting block 16 is located in the annular groove 15 and can slide along the annular groove 15; this arrangement allows the interception net 14 to rotate around the flow port 13, thereby facilitating the shedding of particulate impurities attached to it.

[0048] The interception net 14 is either a cone-shaped net or an arc-shaped net; in this embodiment, the interception net 14 is a cone-shaped net.

[0049] The interception net 14 is provided with a baffle 17. When the heat-exchanged medium enters the flow port 13, the force of the liquid flow acts on the baffle 17, which in turn drives the interception net 14 to rotate.

[0050] When the heat-exchanged medium enters through the flow port 13, the interceptor net 14 can block particulate impurities. When there is a difference in the amount of particulate impurities on different surfaces of the interceptor net 14 during the flow of the medium, the interceptor net 14 can rotate, thereby causing the particulate impurities attached to its exterior to fall off automatically, thus preventing impurities from depositing in the inner tube 2 and keeping the medium in a high flow state for a long time.

[0051] Although the present invention has been described in detail with reference to preferred embodiments, it is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.

Claims

1. A geothermal storage intelligent monitoring heat exchange device, comprising an outer pipe and an inner pipe; characterized in that, The outer tube includes a vertical section and a tapered section, with the tapered section tapering from top to bottom; A seal is installed inside the conical section; The plug is spherical and includes a shell with a through hole and a counterweight inside the through hole. The counterweight is connected to the inner side of the shell by an elastic element A, and the size of the counterweight is smaller than the size of the lower end of the tapered section. When the counterweight is placed inside the through hole, the seal is spherical, and at this time the elastic element A is in a compressed state; The side of the counterweight is provided with a groove, and a stop bar is rotatably installed in the groove; A flow port and an intercepting net are provided on the side of the inner tube. The intercepting net is located around the flow port and can rotate.

2. The geothermal storage intelligent monitoring and heat exchange device as described in claim 1, characterized in that, The counterweight is a tungsten alloy block.

3. The intelligent monitoring and heat exchange device for geothermal storage as described in claim 1, characterized in that, A magnet A is installed inside the counterweight, and a ring magnet B is installed on the bottom surface of the lower end of the tapered section. Magnets A and B are used together.

4. The intelligent monitoring and heat exchange device for geothermal storage as described in claim 1, characterized in that, An elastic element B is provided between the stop bar and the groove. When the counterweight is in the through hole, the elastic element B is in a compressed state.

5. The intelligent monitoring and heat exchange device for geothermal storage as described in claim 1, characterized in that, The baffle is provided with anti-slip teeth.

6. The intelligent monitoring and heat exchange device for geothermal storage as described in claim 1, characterized in that, The outer tube has an arc-shaped protrusion on its wall.

7. The intelligent monitoring and heat exchange device for geothermal storage as described in claim 1, characterized in that, An annular groove is provided on the inner tube, and the annular groove is located around the flow port; a limiting block is provided on the interception net, and the limiting block is located inside the annular groove.

8. The intelligent monitoring and heat exchange device for geothermal storage as described in claim 1, characterized in that, The interception net is either a cone-shaped net or an arc-shaped net.

9. The intelligent monitoring and heat exchange device for geothermal storage as described in claim 1, characterized in that, The interception net is equipped with spoiler wings.

10. The intelligent monitoring and heat exchange device for geothermal storage as described in claim 1, characterized in that, A silicone pad is provided on the inner side of the tapered section.

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