Device for absorbing heat and conducting heat by using deep geothermal energy

Abstract

The invention provides a heat absorption and conduction device utilizing deep geothermal energy, and mainly relates to the technical field of geothermal resources. A heat absorption and conduction device utilizing deep geothermal energy comprises a pipe body arranged in a well body and a heat exchange pipe coaxially arranged in the pipe body, a water inlet is fixedly formed in the position, close to the top, of an outer ring of the pipe body, a sealing cover is fixedly arranged on the top of the pipe body, and a baffle is arranged on the position, close to the top, of an outer ring of the heat exchange pipe in a sleeving mode. The baffle and the sealing cover are connected through screws arranged in an array mode, sliding sleeves are arranged at the bottoms of the heat exchange pipes in a sliding mode, and buffering assemblies are hinged to the positions, close to the bottom, of the outer rings of the heat exchange pipes in an array mode. The device has the beneficial effects that the heat exchange tube can be stably fixed in the tube body through the dead point position of a four-rod mechanism formed by the buffer assembly, and in the device operation process, even if the device is subjected to external force such as stratum movement and water flow impact, the four-rod mechanism can effectively resist the external force when the four-rod mechanism is located at the dead point position; and displacement or shaking of the heat exchange tube is prevented.

Description

Technical Field

[0001] The present invention mainly relates to the field of geothermal resource technology, and in particular to a heat absorbing and conducting device utilizing deep geothermal energy. Background Art

[0002] The deep underground environment is complex, and the rock layer characteristics vary greatly. Under some geological conditions, such as soft strata and strata with high water content, traditional fixing methods are difficult to implement or the fixing effect is poor, resulting in the conduit in the heat absorption and heat conduction device being difficult to obtain stable fixed support. If the conduit cannot be firmly fixed, it will have a negative impact on the heat exchange efficiency and stability of the entire device.

[0003] At the same time, when the liquid flows in the conduit, it is easy to cause resonance due to factors such as the change in liquid flow rate and flow rate and the structural characteristics of the conduit itself. This resonance will cause the conduit to vibrate periodically. Long-term vibration will not only accelerate the fatigue damage of the conduit material and shorten the service life of the conduit, but may also cause the connection parts to loosen and the seal to fail, thereby causing problems such as liquid leakage. Moreover, the vibration caused by resonance will also interfere with the stability of the heat exchange process, reduce the efficiency of heat transfer, and affect the effective utilization of deep geothermal energy. Summary of the invention

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions: A heat-absorbing and heat-conducting device utilizing deep geothermal energy, comprising a pipe body arranged inside a well body, and a heat exchange tube coaxially arranged inside the pipe body, a water inlet fixedly arranged near the top of the outer ring of the pipe body, a cover fixedly arranged on the top of the pipe body, a baffle sleeved near the top of the outer ring of the heat exchange tube, the baffle and the cover connected by an array of screws, a sliding sleeve slidably arranged at the bottom of the heat exchange tube, and an array of hinged buffer components near the bottom of the outer ring of the heat exchange tube; The buffer assembly includes: a roller and several connecting rods. The roller abuts against the inner wall of the tube body and the other end is hinged to the outer ring of the heat exchange tube. The top array of the sliding sleeve is hinged to the support rod, and the support rod is hinged to the outer ring of the roller.

[0005] The inner ring of the cover abuts against the inner wall of the tube body, a sealing plate is fixedly arranged on the top of the cover, the water outlet pipe passes through the bottom of the cover and the sealing plate, a sealing gasket is clamped between the sealing plate and the water outlet pipe, the screw is threadedly connected to the cover, and the bottom of the screw abuts against the top of the baffle.

[0006] The sliding sleeve is hollowed out, and the bottom of the heat exchange tube is connected to the sliding sleeve via a second spring fixedly arranged in an array.

[0007] The outer ring array of the heat exchange tube is provided with a first water inlet hole and the center position of the bottom is provided with a second water inlet hole. The top of the heat exchange tube is provided with a reducing section, and a water outlet pipe is fixedly provided on the top of the reducing section. The baffle is sleeved on the reducing section and is tightly abutted against the inclined surface of the reducing section.

[0008] A sleeve rod is slidably arranged inside the roller, and the other end of the sleeve rod is hinged to the outer ring of the heat exchange tube. The end of the sleeve rod is connected to the inner wall of the roller through a first spring. The outer ring of the sleeve rod is hinged to a first connecting rod, and the other end of the first connecting rod is hinged to a second connecting rod. The other end of the second connecting rod is hinged to the outer ring of the heat exchange tube.

[0009] Compared with the prior art, the beneficial effects of the present invention are: The four-bar mechanism composed of the first connecting rod, the second connecting rod, the supporting rod and the roller can firmly fix the heat exchange tube inside the tube body at the dead point position. During the operation of the device, even if it is subjected to external forces such as stratum movement and water flow impact, the four-bar mechanism can effectively resist these external forces when it is at the dead point position to prevent the heat exchange tube from displacement or shaking, thereby ensuring the stable operation of the device, which not only improves the reliability of the device, but also prolongs its service life; The inner circle of the sealing cover abuts against the inner wall of the tube body, a sealing plate is fixed on the top of the sealing cover, the water outlet pipe passes through the bottom of the sealing cover and the sealing plate, and a sealing gasket is clamped between the sealing plate and the water outlet pipe. This multiple sealing structure design effectively prevents hot water leakage inside the tube body and ensures the sealing performance of the device under high pressure and high temperature environment. Good sealing performance not only avoids energy waste, but also reduces the safety hazards that may be caused by hot water leakage, thereby improving the safety and reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Attached Figure 1 It is a schematic diagram of the installation structure of the present invention; Attached Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Attached Figure 3 It is a schematic diagram of the first decomposition structure of the present invention; Attached Figure 4 The present invention Figure 2 A schematic diagram of the partially enlarged structure at center A; Attached Figure 5 It is a schematic diagram of the second decomposition structure of the present invention; Attached Figure 6 It is a schematic diagram of the third decomposition structure of the present invention.

[0011] Numbers shown in the accompanying drawings: 1, well body; 2, pipe body; 201, water inlet; 3, heat exchange tube; 301, reducing section; 302, water outlet pipe; 4, cover; 5, baffle; 6, screw; 7, sleeve; 8, buffer assembly; 801, roller; 802, sleeve rod; 803, first connecting rod; 804, second connecting rod; 9, support rod; 10, second spring; 11, sealing plate; 12, sealing gasket. DETAILED DESCRIPTION

[0012] The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the application.

[0013] In conjunction with the accompanying drawings, a heat-absorbing and heat-conducting device utilizing deep geothermal energy comprises a pipe body 2 disposed inside a well body 1, and a heat exchange tube 3 coaxially disposed inside the pipe body 2, a water inlet 201 is fixedly disposed near the top of the outer ring of the pipe body 2, a cover 4 is fixedly disposed on the top of the outer ring of the pipe body 2, a baffle 5 is sleeved near the top of the outer ring of the heat exchange tube 3, the baffle 5 and the cover 4 are connected by an array of screws 6, a sliding sleeve 7 is slidably disposed at the bottom of the heat exchange tube 3, and an array of hinged buffer components 8 are disposed near the bottom of the outer ring of the heat exchange tube 3; The buffer assembly 8 includes: a roller 801 and several connecting rods. The roller 801 abuts against the inner wall of the tube body 2 and the other end is hinged to the outer ring of the heat exchange tube 3. The top array of the sliding sleeve 7 is hinged to the support rod 9, and the support rod 9 is hinged to the outer ring of the roller 801. The inner circle of the cover 4 abuts against the inner wall of the tube body 2, and a sealing plate 11 is fixedly arranged on the top of the cover 4. The water outlet pipe 302 passes through the bottom of the cover 4 and the sealing plate 11. A sealing gasket 12 is clamped between the sealing plate 11 and the water outlet pipe 302. The sealing is performed through this structural design. The screw 6 is threadedly connected to the cover 4, and the bottom of the screw 6 abuts against the top of the baffle 5. Through this structural setting, a radial force is applied to the heat exchange tube 3 to drive the heat exchange tube 3 to move downward.

[0014] The sliding sleeve 7 is hollowed out, and the bottom of the heat exchange tube 3 is connected to the sliding sleeve 7 via a second spring 10 fixedly arranged in an array.

[0015] The outer circle array of the heat exchange tube 3 is provided with a first water inlet hole and the second water inlet hole is provided at the center position of the bottom. The top of the heat exchange tube 3 is provided with a reducing section 301, and the top of the reducing section 301 is fixedly provided with a water outlet pipe 302. The baffle 5 is sleeved on the position of the reducing section 301 and is tightly abutted against the inclined surface of the reducing section 301.

[0016] A sleeve rod 802 is slidably arranged inside the roller 801, and the other end of the sleeve rod 802 is hinged to the outer ring of the heat exchange tube 3. The end of the sleeve rod 802 is connected to the inner wall of the roller 801 through a first spring. The outer ring of the sleeve rod 802 is hinged to the first connecting rod 803, and the other end of the first connecting rod 803 is hinged to the second connecting rod 804. The other end of the second connecting rod 804 is hinged to the outer ring of the heat exchange tube 3.

[0017] When the device is in use, the pipe body 2 is hoisted into the well body 1 so that the pipe body 2 is at the center of the well body 1, the heat exchange tube 3 is coaxially placed inside the pipe body 2, the baffle 5 is sleeved on the position of the reducer 301 near the top of the outer ring of the heat exchange tube 3, so that the baffle 5 is tightly abutted against the inclined surface of the reducer 301, and the cover 4 is installed on the top of the pipe body 2; during the heat exchange process, due to the possible instability of the geological conditions inside the well body 1, the pipe body 2 and the heat exchange tube 3 may be slightly vibrated or displaced. At this time, the buffer component 8 plays a role. When the relative position between the pipe body 2 and the heat exchange tube 3 changes, the sleeve rod 802 inside the roller 801 can adaptively adjust the position of the roller 801 under the action of the first spring through the linkage of the first connecting rod 803 and the second connecting rod 804, so as to always maintain abutment with the inner wall of the pipe body 2, and buffer vibration to protect the device from damage; By rotating each screw rod 6, a radial force is applied to the baffle 5, driving the heat exchange tube 3 to move downward so that the sleeve 7 contacts the bottom of the heat exchange tube 3. The force is continued to be applied, and the sleeve 7 and the heat exchange tube 3 are displaced, driving the support rod 9 to move upward, so that the first connecting rod 803 and the second connecting rod 804 are located on the same straight line, and are now in the dead point position in the four-bar mechanism. Even if the device is subjected to external vibration, water flow impact and other forces, the device can maintain the current state, thereby fixing the roller 801 at the corresponding position of the inner wall of the tube body 2, thereby achieving a stable fixation of the heat exchange tube 3; when it is necessary to maintain, overhaul or adjust the position of the heat exchange tube 3, loosen each screw rod 6, and the sleeve 7 is reset under the action of the second spring 10, thereby driving the buffer assembly 8 to break through the dead point position and release the limit; Water is injected into the pipe body 2 through the water inlet 201. After entering the pipe body 2, the water is fully in contact with the surrounding geothermal environment. Heat is transferred from the high-temperature geothermal environment to the low-temperature water, thereby increasing the temperature of the water and absorbing heat. The heated water in the pipe body 2 flows into the heat exchange tube 3 through the first water inlet hole opened in the outer circle array of the heat exchange tube 3 and the second water inlet hole opened at the center of the bottom, and flows out from the water outlet pipe 302 after passing through the reducing section 301.

[0018] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heat absorbing and conducting device utilizing deep geothermal energy, comprising a pipe body (2) arranged inside a well body (1), and a heat exchange pipe (3) coaxially arranged inside the pipe body (2), characterized in that: A water inlet (201) is fixedly arranged near the top of the outer ring of the tube body (2), a cover (4) is fixedly arranged at the top of the tube body (2), a baffle (5) is sleeved near the top of the outer ring of the heat exchange tube (3), the baffle (5) and the cover (4) are connected by an array of screws (6), a sliding sleeve (7) is slidably arranged at the bottom of the heat exchange tube (3), and an array of hinged buffer components (8) are arranged near the bottom of the outer ring of the heat exchange tube (3); The buffer assembly (8) comprises: a roller (801) and a plurality of connecting rods; the roller (801) is in contact with the inner wall of the tube body (2) and the other end is hinged to the outer ring of the heat exchange tube (3); the top array of the sliding sleeve (7) is hinged to a support rod (9); and the support rod (9) is hinged to the outer ring of the roller (801).

2. The heat absorbing and conducting device utilizing deep geothermal energy according to claim 1, characterized in that: The inner ring of the sealing cover (4) abuts against the inner wall of the tube body (2); a sealing plate (11) is fixedly arranged on the top of the sealing cover (4); the water outlet pipe (302) passes through the bottom of the sealing cover (4) and the sealing plate (11); a sealing gasket (12) is clamped between the sealing plate (11) and the water outlet pipe (302); the screw rod (6) is threadedly connected to the sealing cover (4); and the bottom of the screw rod (6) abuts against the top of the baffle (5).

3. The heat absorbing and conducting device utilizing deep geothermal energy according to claim 1, characterized in that: The sliding sleeve (7) is hollowed out, and the bottom of the heat exchange tube (3) and the sliding sleeve (7) are connected via a second spring (10) fixedly arranged in an array.

4. The heat absorbing and conducting device utilizing deep geothermal energy according to claim 1, characterized in that: The heat exchange tube (3) is provided with a first water inlet hole in the outer circle array and a second water inlet hole at the center position of the bottom; a reducing section (301) is provided at the top of the heat exchange tube (3); a water outlet pipe (302) is fixedly provided at the top of the reducing section (301); the baffle (5) is sleeved on the reducing section (301) and is in close contact with the inclined surface of the reducing section (301).

5. The heat absorbing and conducting device utilizing deep geothermal energy according to claim 4, characterized in that: A sleeve rod (802) is slidably arranged inside the roller (801), and the other end of the sleeve rod (802) is hinged to the outer ring of the heat exchange tube (3). The end of the sleeve rod (802) is connected to the inner wall of the roller (801) via a first spring. The outer ring of the sleeve rod (802) is hinged to a first connecting rod (803), and the other end of the first connecting rod (803) is hinged to a second connecting rod (804). The other end of the second connecting rod (804) is hinged to the outer ring of the heat exchange tube (3).

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