A metal heat exchanger and its heat exchange method for medium-deep geothermal source technology

Abstract

This invention provides a metal heat exchanger for medium-deep geothermal source technology, comprising a soil layer, a filling layer, and a metal heat exchanger. The filling layer is cast between the soil layer and the metal heat exchanger. The metal heat exchanger consists of metal heat exchange tubes and a medium conveying pipe. First baffles are welded to the four corners of the inner wall of the metal heat exchange tubes. Second baffles are welded to the front and rear sides of the outer wall of the medium conveying pipe, with the first and second baffles staggered. A heat exchanger reinforcing frame structure is also provided at the connection between the metal heat exchange tubes and the medium conveying pipe. A T-shaped input pipe is installed on the upper left side of the metal heat exchange tubes. This invention utilizes the heat exchanger reinforcing frame structure to increase the strength between the metal heat exchange tubes and the medium conveying pipe, preventing the metal heat exchange tubes from being easily squeezed and deformed during natural disasters, and improving the strength of the metal heat exchanger.

Description

Technical Field

[0001] This invention belongs to the field of geothermal source heat exchange technology, and particularly relates to a metal heat exchanger and its heat exchange method for medium-deep geothermal source technology. Background Technology

[0002] Medium-deep geothermal heat exchange requires the use of metal heat exchangers. However, existing technologies suffer from problems such as the heat exchange location being susceptible to natural disasters that can cause pressure on the metal heat exchangers, poor protection of the metal heat exchangers, and inconvenience in monitoring temperatures at different depths. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a metal heat exchanger and its heat exchange method for medium-deep geothermal source technology, which can increase the strength of the metal heat exchanger itself and enable real-time monitoring of temperature at different depths.

[0004] The technical solution is as follows: a metal heat exchanger for medium-deep geothermal source technology, comprising a soil layer, a filling layer, and a metal heat exchanger, wherein the filling layer is cast between the soil layer and the metal heat exchanger, and the metal heat exchanger consists of a metal heat exchange tube and a medium conveying pipe; a first baffle plate is welded to each of the four corners of the inner wall of the metal heat exchange tube; a second baffle plate is welded to the front and rear sides of the outer wall of the medium conveying pipe, and the first and second baffle plates are staggered; a heat exchanger reinforcing frame structure is also provided at the connection between the metal heat exchange tube and the medium conveying pipe; a T-shaped input pipe is installed on the upper left side of the metal heat exchange tube; an L-shaped output pipe is installed at the upper end of the medium conveying pipe; a sealing cap is bolted to the upper end of the T-shaped input pipe; and an adjustable temperature measuring frame structure is also installed on the inner side of the T-shaped input pipe and the metal heat exchange tube.

[0005] Preferably, the heat exchanger reinforcement structure includes a first reinforcing ring, a reinforcing support rod, and a second reinforcing ring. The first reinforcing ring is welded to the inner wall of the metal heat exchange tube; the reinforcing support rod is welded between the first and second reinforcing rings; and the second reinforcing ring is welded to the outer side of the medium conveying pipe.

[0006] Preferably, the adjustable temperature measuring frame structure includes a mounting plate, wherein a drive wheel is axled on the upper part of the mounting plate; a rotating handle is installed at the middle of the front end of the drive wheel; a steel wire adjusting rope is sleeved on the lower outer side of the drive wheel; a lower guide wheel is provided on the lower inner side of the steel wire adjusting rope; a U-shaped metal clip is clamped on the outer right side of the steel wire adjusting rope; and a temperature sensor is installed on the U-shaped metal clip.

[0007] A heat exchange method for a medium-deep geothermal source technology includes the following steps:

[0008] Step 1: Install the equipment. Connect the right end of the T-shaped inlet pipe and the L-shaped outlet pipe to the external heat exchange components and the circulating pump. Then, supply the circulating medium from the top of the T-shaped inlet pipe into the metal heat exchange tube and the medium delivery pipe. The circulating medium should cover the transverse section of the T-shaped inlet pipe. Finally, install the sealing cap on the top of the T-shaped inlet pipe.

[0009] Step 2: Adjust the temperature measuring component. Then, use pliers to clamp the U-shaped metal clips onto the outside of the steel wire adjusting rope. Raise the rotating handle and use the drive wheel to rotate the steel wire adjusting rope clockwise. Install the U-shaped metal clips every five to ten meters in sequence so that the temperature sensor can monitor the temperature of the circulating medium at different depths.

[0010] Step 3: For medium circulation heat exchange, use an external circulation pump to introduce the circulating medium from the T-shaped input pipe and let it flow downwards. After passing through the first and second baffles in sequence, it enters the medium delivery pipe from the bottom of the metal heat exchange tube. Then, it is discharged to the outer heat exchange component through the L-shaped output pipe. Then, the circulating pump is used again to send the discharged circulating medium back into the inner side of the metal heat exchange tube through the T-shaped input pipe.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] In this invention, a heat exchanger reinforcing frame structure is used to increase the strength between the metal heat exchange tube and the medium conveying pipe, and to prevent the metal heat exchange tube from being easily squeezed and deformed during natural disasters, thereby improving the strength of the metal heat exchanger.

[0013] In this invention, a temperature sensor is used to monitor the temperature of media at different depths in real time. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the heat exchanger reinforcement frame structure of the present invention.

[0016] Figure 3 This is a schematic diagram of the heat exchanger reinforcement frame structure of the present invention.

[0017] Figure 4 This is a top view schematic diagram of the structure of the metal heat exchange tube and the medium conveying tube of the present invention.

[0018] Figure 5 This is a flowchart of the present invention.

[0019] In the picture:

[0020] 1. Soil and rock layer; 2. Filling layer; 3. Metal heat exchanger tube; 4. Medium conveying pipe; 5. First baffle; 6. Second baffle; 7. Heat exchanger reinforcing frame structure; 71. First reinforcing ring; 72. Reinforcing support rod; 73. Second reinforcing ring; 8. Bottom reinforcing frame; 9. T-shaped input pipe; 10. L-shaped output pipe; 11. Sealing cover; 12. Adjustable temperature measuring frame structure; 121. Mounting support plate; 122. Drive wheel; 123. Rotary handle; 124. Steel wire adjusting rope; 125. Lower guide wheel; 126. U-shaped metal clamp; 127. Temperature sensor. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] Example:

[0023] As attached Figure 1 and attached Figure 2 As shown, this invention provides a metal heat exchanger for medium-deep geothermal source technology, comprising a soil layer 1, a filling layer 2, and a metal heat exchanger. The filling layer 2 is cast between the soil layer 1 and the metal heat exchanger. The metal heat exchanger consists of a metal heat exchange tube 3 and a medium conveying pipe 4. First baffles 5 are welded to the four corners of the inner wall of the metal heat exchange tube 3. Second baffles 6 are welded to the front and rear sides of the outer wall of the medium conveying pipe 4, with the first baffles 5 and the second baffles 6 arranged alternately. A heat exchanger reinforcing frame structure 7 is also provided at the connection between the metal heat exchange tube 3 and the medium conveying pipe 4. A [missing information - likely a component or structure] is installed on the upper left side of the metal heat exchange tube 3. T-shaped input pipe 9; an L-shaped output pipe 10 is installed at the upper end of the medium conveying pipe 4; a sealing cap 11 is bolted to the upper end of the T-shaped input pipe 9; an adjustable temperature measuring frame structure 12 is also installed on the inner side of the T-shaped input pipe 9 and the metal heat exchanger tube 3; the heat exchanger reinforcing frame structure 7 includes a first reinforcing ring 71, a reinforcing support rod 72, and a second reinforcing ring 73. The first reinforcing ring 71 is welded to the inner wall of the metal heat exchanger tube 3; the reinforcing support rod 72 is welded between the first reinforcing ring 71 and the second reinforcing ring 73; the second reinforcing ring 73 is welded to the outer side of the medium conveying pipe 4.

[0024] As attached Figure 3As shown in the above embodiment, specifically, the adjustable temperature measuring frame structure 12 includes a mounting plate 121, wherein a drive wheel 122 is shafted to the upper part of the mounting plate 121; a rotating handle 123 is installed at the middle of the front end of the drive wheel 122; a steel wire adjusting rope 124 is sleeved on the lower outer side of the drive wheel 122; a lower guide wheel 125 is provided on the lower inner side of the steel wire adjusting rope 124, and the rotating handle 123 drives the steel wire adjusting rope 124 to rotate counterclockwise on the outside of the lower guide wheel 125 through the drive wheel 122, thereby facilitating the downward adjustment of the installed temperature sensor 127; a U-shaped metal clip 126 is clamped on the outer right side of the steel wire adjusting rope 124, and the U-shaped metal clip 126 is sleeved on the outside of the steel wire adjusting rope 124, and then clamped with pliers to facilitate the installation of the temperature sensor 127; the temperature sensor 127 is installed on the U-shaped metal clip 126.

[0025] As attached Figure 1 As shown in the above embodiment, specifically, a bottom reinforcing frame 8 is welded to the four lower corners of the medium conveying pipe 4, and the bottom of the bottom reinforcing frame 8 is welded to the four lower corners of the metal heat exchange pipe 3. In use, the bottom reinforcing frame 8 can provide good support for the lower end of the medium conveying pipe 4, thereby preventing the medium conveying pipe 4 from sinking downward from the inside of the metal heat exchange pipe 3.

[0026] As attached Figure 1 As shown in the above embodiment, specifically, the spacing between the heat exchanger reinforcing frame structures 7 is set to five to ten meters. The heat exchanger reinforcing frame structures 7 increase the strength between the metal heat exchange tube 3 and the medium conveying pipe 4, and prevent the metal heat exchange tube 3 from being easily squeezed and deformed during natural disasters, and can improve the strength of the metal heat exchanger.

[0027] As attached Figure 3 As shown in the above embodiment, specifically, the spacing between the temperature sensors 127 is set to five to ten meters, which facilitates real-time monitoring of the temperature of media at different depths using the temperature sensors 127 during use.

[0028] As attached Figure 1 As shown in the above embodiment, specifically, the lower guide wheel 125 is axially connected to the lower left side of the inner wall of the metal heat exchange tube 3, which facilitates good positioning of the steel wire adjustment rope 124.

[0029] As attached Figure 4 As shown in the above embodiment, specifically, the steel wire adjustment rope 124 is respectively set in the gap between the first spoiler 5, the gap between the second spoiler 6, and the gap between the reinforcing support rod 72, so that it will not affect the up and down transportation of the temperature sensor 127 by means of the steel wire adjustment rope 124 during use.

[0030] As attached Figure 4 As shown in the above embodiment, specifically, the temperature sensor 127 is electrically connected to an external host, and the external host is equipped with a display screen, so as to display the medium temperature detected by the temperature sensor 127 at different depths.

[0031] A heat exchange method for a medium-deep geothermal source technology includes the following steps:

[0032] As attached Figure 5 As shown:

[0033] S101: Install the equipment by connecting the right end of the T-type input pipe 9 and the L-type output pipe 10 to the external heat exchange components and the circulating pump. Then, supply the circulating medium from the upper end of the T-type input pipe 9 into the metal heat exchange tube 3 and the medium delivery pipe 4 until the circulating medium covers the transverse section of the T-type input pipe 9. Finally, install the sealing cap 11 on the upper end of the T-type input pipe 9.

[0034] S102: Adjust the temperature measuring component, then use pliers to clamp the U-shaped metal clip 126 onto the outside of the wire adjustment rope 124, and rotate the wire adjustment rope 124 clockwise by using the drive wheel 122 through the rotation handle 123, and install the U-shaped metal clip 126 in sequence at intervals of five to ten meters, so as to use the temperature sensor 127 to monitor the temperature of the circulating medium at different depths.

[0035] S103: For medium circulation heat exchange, an external circulation pump is used to introduce the circulating medium from the T-shaped input pipe 9 and flow downwards. After passing through the first baffle 5 and the second baffle 6 in sequence, it enters the medium delivery pipe 4 from the bottom of the metal heat exchange tube 3. Then, it is discharged to the outer heat exchange component through the L-shaped output pipe 10. Then, the circulating pump is used again to send the discharged circulating medium back into the inner side of the metal heat exchange tube 3 through the T-shaped input pipe 9. The first baffle 5 and the second baffle 6 can increase and improve the heat exchange effect of the metal heat exchange tube 3 on medium and deep geothermal energy.

[0036] Working principle

[0037] In operation, the right end of the T-shaped input pipe 9 and the L-shaped output pipe 10 are connected to the external heat exchange components and the circulating pump. Then, circulating medium is supplied from the upper end of the T-shaped input pipe 9 into the metal heat exchange tube 3 and the medium delivery pipe 4 until the circulating medium covers the transverse section of the T-shaped input pipe 9. Next, the sealing cap 11 is installed on the upper end of the T-shaped input pipe 9. Then, using pliers, the U-shaped metal clamp 126 is clamped onto the outside of the wire adjustment rope 124. The drive wheel 122 rotates the drive handle 123 clockwise around the wire adjustment rope 124, and the U-shaped metal clamp is adjusted at intervals of five to ten meters. The clamps 126 are installed sequentially so that the temperature sensor 127 can monitor the temperature of the circulating medium at different depths. The circulating medium is introduced from the T-shaped input pipe 9 by an external circulation pump and flows downward. After passing through the first baffle 5 and the second baffle 6, it enters the medium delivery pipe 4 from the bottom of the metal heat exchange tube 3. Then it is discharged to the outer heat exchange component through the L-shaped output pipe 10. Then, the circulating pump is used again to discharge the discharged circulating medium into the inner side of the metal heat exchange tube 3 through the T-shaped input pipe 9. The first baffle 5 and the second baffle 6 can increase and improve the heat exchange effect of the metal heat exchange tube 3 on medium and deep geothermal energy.

[0038] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solutions described in this invention, or by designing similar technical solutions by those skilled in the art under the inspiration of the technical solutions described in this invention, falls within the protection scope of this invention.

Claims

1. A metal heat exchanger for a medium-depth geothermal source technology, characterized in that, The system includes a soil layer (1), a filling layer (2), and a metal heat exchanger. The filling layer (2) is cast between the soil layer (1) and the metal heat exchanger. The metal heat exchanger consists of a metal heat exchange tube (3) and a medium conveying pipe (4). A first baffle plate (5) is welded to each of the four corners of the inner wall of the metal heat exchange tube (3). A second baffle plate (6) is welded to the front and rear sides of the outer wall of the medium conveying pipe (4), and the first baffle plate (5) and the second baffle plate (6) are staggered. A heat exchanger reinforcing frame structure (7) is also provided at the connection between the heat exchange tube (3) and the medium conveying pipe (4); a T-shaped input pipe (9) is installed on the upper left side of the metal heat exchange tube (3); an L-shaped output pipe (10) is installed at the upper end of the medium conveying pipe (4); a sealing cap (11) is bolted to the upper end of the T-shaped input pipe (9); an adjustable temperature measuring frame structure (12) is also installed on the inner side of the T-shaped input pipe (9) and the metal heat exchange tube (3). The heat exchanger reinforcement structure (7) includes a first reinforcing ring (71), a reinforcing support rod (72), and a second reinforcing ring (73). The first reinforcing ring (71) is welded to the inner wall of the metal heat exchange tube (3); the reinforcing support rod (72) is welded between the first reinforcing ring (71) and the second reinforcing ring (73); and the second reinforcing ring (73) is welded to the outer side of the medium conveying pipe (4). The adjustable temperature measuring frame structure (12) includes a mounting plate (121), wherein a drive wheel (122) is axled on the upper part of the mounting plate (121); a rotating handle (123) is installed at the middle of the front end of the drive wheel (122); a steel wire adjusting rope (124) is sleeved on the lower outer side of the drive wheel (122); a lower guide wheel (125) is provided on the lower inner side of the steel wire adjusting rope (124); a U-shaped metal clip (126) is clamped on the right outer side of the steel wire adjusting rope (124); and a temperature sensor (127) is installed on the U-shaped metal clip (126). The lower four corners of the medium conveying pipe (4) are welded with bottom reinforcing frames (8), and the bottom of the bottom reinforcing frames (8) is welded to the bottom four corners of the metal heat exchange pipe (3).

2. The metal heat exchanger of the intermediate-depth geothermal resource technology according to claim 1, characterized by, The spacing between the heat exchanger reinforcement frame structures (7) is set to five to ten meters.

3. The metal heat exchanger of the intermediate-depth geothermal resource technology according to claim 1, characterized by, The steel wire adjustment rope (124) is respectively set in the gap between the first spoiler (5), the gap between the second spoiler (6), and the gap between the reinforcing support rod (72).

4. A heat exchange method using the metal heat exchanger of the intermediate-depth geothermal heat source technology according to any one of claims 1 to 3, characterized by, The heat exchange method of this medium-deep geothermal source technology includes the following steps: Step 1: Install the equipment. Connect the right end of the T-type input pipe (9) and the L-type output pipe (10) to the external heat exchange components and the circulating pump. Then, transport the circulating medium from the upper end of the T-type input pipe (9) into the metal heat exchange tube (3) and the medium conveying pipe (4). The circulating medium should cover the transverse section of the T-type input pipe (9). Then, install the sealing cap (11) on the upper end of the T-type input pipe (9). Step two: adjust the temperature measuring part, then use pliers to clamp the U-shaped metal clamp (126) on the outside of the steel wire adjusting rope (124), raise the rotating handle (123) to rotate the steel wire adjusting rope (124) clockwise by the driving wheel (122), and install the U-shaped metal clamp (126) every five to ten meters in turn, so as to monitor the temperature of the circulating medium at different depths by the temperature sensor (127); Step three: medium circulation heat exchange, use the external circulating pump to guide the circulating medium into the T-shaped input pipe (9) and flow downward, pass through the first spoiler (5) and the second spoiler (6) in turn, enter the medium conveying pipe (4) from the bottom of the metal heat exchange pipe (3), then pass through the L-shaped output pipe (10) to the outside heat exchange component, and then use the circulating pump again to guide the discharged circulating medium into the inside of the metal heat exchange pipe (3) again through the T-shaped input pipe (9).

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