Efficient heat energy conversion device and method based on heat radiation

Abstract

The invention discloses an efficient heat energy conversion device and method based on heat radiation, and belongs to the technical field of heat radiation, the efficient heat energy conversion device comprises a supporting frame, a heat radiation structure is arranged at the top of the supporting frame, the heat radiation structure is rotationally connected with the supporting frame, and a rotation driving structure is arranged on the supporting frame; the rotary driving structure is in transmission connection with the heat radiation structure, a heat energy conversion structure is arranged on the supporting frame, the heat energy conversion structure is communicated with the heat radiation structure, and a conversion power generation structure connected with the heat energy conversion structure is arranged on the supporting frame. In the process of receiving illumination, the groove type parabolic mirror can always face a solar beam; sunlight can be incident and focused on the heat collecting pipe at the optimal angle, the solar energy can be incident and focused on the heat collecting pipe at the optimal angle, 30%-40% more solar radiation energy can be received, and the heat collecting efficiency is improved by 20%-30%.

Description

Technical Field

[0001] The present invention belongs to the field of thermal radiation technology, and in particular relates to a high-efficiency thermal energy conversion device and method based on thermal radiation. Background Art

[0002] Among renewable energy sources such as solar energy and geothermal energy, energy in the form of thermal energy accounts for a large proportion. Taking solar energy as an example, solar thermal radiation contains huge energy. How to efficiently convert this thermal radiation energy into other usable energy forms, such as electrical energy and mechanical energy, is crucial to improving the utilization efficiency of renewable energy and reducing costs.

[0003] However, during use, the existing thermal radiation device cannot move according to the movement of sunlight, so that the trough solar thermal power generation system always receives sunlight, resulting in low thermal efficiency of heat conversion of sunlight, weakening the received light intensity and worsening the focusing effect. Summary of the invention

[0004] The embodiments of the present invention provide a high-efficiency heat energy conversion device and method based on heat radiation to solve the problems in the prior art.

[0005] The embodiment of the present invention adopts the following technical scheme: a high-efficiency heat energy conversion device based on thermal radiation, comprising a support frame, a heat radiation structure is provided on the top of the support frame, the heat radiation structure and the support frame are rotatably connected, a rotation drive structure is provided on the support frame, the rotation drive structure and the heat radiation structure are transmission-connected, a heat energy conversion structure is provided on the support frame, the heat energy conversion structure and the heat radiation structure are interconnected, and a conversion power generation structure connected to the heat energy conversion structure is provided on the support frame.

[0006] According to a further technical solution, the heat radiation structure comprises a trough parabolic mirror and an arc frame, wherein the trough parabolic mirror is mounted on the arc frame, a driving shaft is provided on the arc frame, and the arc frame is rotatably connected to the support frame via the driving shaft.

[0007] A further technical solution is that a plurality of equally spaced heat collecting tubes are provided in the arc frame, the heat collecting tubes are located on the back of the trough parabolic mirror, one end of the heat collecting tube is fixed to the arc frame by bolts, the other end of the heat collecting tube is provided with a pipe head, the arc frame is provided with a water collecting trough, and the other end of the heat collecting tube is connected to the water collecting trough through the pipe head.

[0008] A further technical solution is that the rotation drive structure includes a drive motor, a reducer, a first drive wheel, a second drive wheel and a belt, the first drive wheel is connected to the end of the drive shaft, the drive motor is located on the reducer, the reducer is located on the side wall of the support frame, the second drive wheel is located on the main shaft of the reducer, and the belt is sleeved on the first drive wheel and the second drive wheel.

[0009] A further technical solution is that two columns are provided on the top of the support frame, a circular groove is provided in the column, a sliding rod slidably matched is provided in the circular groove, a spring is provided between the sliding rod and the circular groove, an interference iron rod is provided on the sliding rod, a contact switch matching with the interference iron rod is provided in the circular groove, and the contact switch is electrically connected to the drive motor.

[0010] According to a further technical solution, the heat energy conversion structure includes four heat exchangers arranged on a support frame, the four heat exchangers are interconnected, and the heat exchangers are provided with pipes connected to the water collecting tank.

[0011] According to a further technical solution, the conversion power generation structure includes a steam turbine and a generator, the steam turbine is connected to a heat exchanger, and the generator is drivingly connected to the steam turbine.

[0012] A method for efficient thermal energy conversion based on thermal radiation, the conversion method comprising the following steps:

[0013] In the first step, the parabolic trough mirror is used to focus the sunlight onto the collector tube, and the thermal radiation in the sunlight is absorbed by the collector tube.

[0014] In the second step, the heat absorbed by the heat collecting tube is transferred to the heat transfer medium in the tube, which increases the temperature of the heat transfer medium and forms a high-temperature and high-pressure hot fluid. The hot fluid is transported to the heat exchanger through the pipeline to transfer the heat to the secondary working medium.

[0015] In the third step, the warm and high-pressure steam enters the steam turbine, driving the turbine's impeller to rotate. The steam turbine then drives the generator to operate, thereby converting thermal energy into electrical energy.

[0016] At least one of the above technical solutions adopted in the embodiments of the present invention can achieve the following beneficial effects:

[0017] First, during the use of the present invention, the driving motor drives the second driving wheel to rotate through the work of the reducer, and the rotation of the second driving wheel drives the first driving wheel to rotate through the belt, and the rotation of the first driving wheel drives the driving shaft to rotate, thereby driving the arc frame to rotate, and the arc frame rotates to drive the trough parabolic mirror to rotate. In the process of receiving light, the trough parabolic mirror can always face the sun beam; the sun can be incident at the best angle and focused on the heat collecting tube, which can receive 30% to 40% more solar radiation energy, and the heat collection efficiency is increased by 20% to 30%; the heat collection tube can receive heat more evenly and stably, reduce thermal stress and material aging, and extend the service life of components. In terms of system stability, it is conducive to maintaining the stability of the thermal cycle, ensuring the stable output of power generation, and enhancing the anti-interference ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0020] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0021] Figure 3 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0022] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the heat radiation structure in the present invention;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the heat collecting tube in the present invention;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the column in the present invention;

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the conversion power generation structure and the thermal energy conversion structure in the present invention;

[0027] Reference numerals:

[0028] Support frame 1, heat radiation structure 2, trough parabolic mirror 21, arc frame 22, drive shaft 23, heat collecting tube 24, pipe head 25, bolt 26, water collecting trough 27, rotation drive structure 3, drive motor 31, reducer 32, first drive wheel 33, second drive wheel 34, belt 35, heat energy conversion structure 4, heat exchanger 41, conversion power generation structure 5, steam turbine 51, generator 52, column 6, circular groove 61, slide rod 62, spring 63, and abutment iron rod 64. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] The following describes in detail, in conjunction with the accompanying drawings, a technical solution of a high-efficiency heat energy conversion device and method based on thermal radiation provided by various embodiments of the present invention.

[0031] Reference Figures 1 to 8 As shown, an embodiment of the present invention provides a high-efficiency heat energy conversion device based on thermal radiation, including a support frame 1, a heat radiation structure 2 is provided on the top of the support frame 1, the heat radiation structure 2 is rotatably connected to the support frame 1, a rotation drive structure 3 is provided on the support frame 1, and the rotation drive structure 3 is transmission-connected to the heat radiation structure 2, a heat energy conversion structure 4 is provided on the support frame 1, the heat energy conversion structure 4 and the heat radiation structure 2 are interconnected, and a conversion power generation structure 5 connected to the heat energy conversion structure 4 is provided on the support frame 1.

[0032] Specifically, the heat radiation structure 2 includes a trough parabolic mirror 21 and an arc frame 22 . The trough parabolic mirror 21 is installed on the arc frame 22 . A driving shaft 23 is provided on the arc frame 22 . The arc frame 22 is rotatably connected to the support frame 1 via the driving shaft 23 .

[0033] Specifically, a plurality of heat collecting tubes 24 arranged at equal intervals are provided in the arc frame 22, and the heat collecting tubes 24 are located on the back of the trough parabolic mirror 21. One end of the heat collecting tube 24 is fixed to the arc frame 22 by a bolt 26, and the other end of the heat collecting tube 24 is provided with a pipe head 25. A water collecting trough 27 is provided on the arc frame 22, and the other end of the heat collecting tube 24 is connected to the water collecting trough 27 through the pipe head 25.

[0034] When installing the heat collecting tube 24, one end of the heat collecting tube 24 with the pipe head 25 is inserted into the water collecting tank 27 so that the pipe head 25 is connected to the water collecting tank 27. Then, the bolts 26 are tightened to position the heat collecting tube 24 on the arc frame 22, thereby fixing the heat collecting tube 24.

[0035] Specifically, the rotating drive structure 3 includes a driving motor 31, a reducer 32, a first driving wheel 33, a second driving wheel 34 and a belt 35. The first driving wheel 33 is connected to the end of the driving shaft 23, the driving motor 31 is located on the reducer 32, the reducer 32 is located on the side wall of the support frame 1, the second driving wheel 34 is located on the main shaft of the reducer 32, and the belt 35 is sleeved on the first driving wheel 33 and the second driving wheel 34.

[0036] During use, the driving motor 31 drives the second driving wheel 34 to rotate through the reducer 32. The second driving wheel 34 rotates, which drives the first driving wheel 33 to rotate through the belt 35. The first driving wheel 33 rotates and drives the driving shaft 23 to rotate, thereby driving the arc frame 22 to rotate. The arc frame 22 rotates and drives the trough parabolic mirror 21 to rotate. In the process of receiving light, the trough parabolic mirror 21 can always face the sun beam.

[0037] Improve power generation efficiency:

[0038] Maximizing light absorption: The trough parabolic mirror 21 always faces the sun beam, ensuring that the sunlight is incident on the parabolic mirror at the best angle, and then is reflected and focused on the heat collecting tube 24 to the maximum extent. Compared with the parabolic mirror with a fixed angle, the trackable parabolic mirror can receive 30%-40% more solar radiation energy, significantly improving the light collection efficiency and providing more energy sources for subsequent heat and electrical energy conversion.

[0039] Maintain efficient focusing: The position of the sun is constantly changing. If the parabolic mirror does not track, the focusing effect will deteriorate as the sun angle deviates. However, by always keeping the parabolic mirror facing the sun, the sunlight can be accurately focused on the heat collecting tube 24, so that the heat collecting tube 24 absorbs the high-heat focused light, and the heat collection efficiency can be increased by 20%-30%, thereby improving the efficiency of the entire system in converting solar energy into heat energy and electrical energy.

[0040] Extend equipment life:

[0041] Reduce thermal stress: When the parabolic mirror tracks the sun, the heat received by the heat collecting tube 24 is more uniform and stable, avoiding local overheating or overcooling caused by changes in the position of the sun, thereby reducing the thermal stress of the heat collecting tube 24 and related components. The reduction of thermal stress can effectively reduce fatigue damage and deformation of components, extend the service life of key components such as the heat collecting tube 24 and the reflector, and reduce the maintenance and replacement costs of the equipment.

[0042] Reduce material aging: Stable light reception makes the thermal environment of each component of the system relatively stable, reducing material aging and performance degradation caused by drastic temperature changes. For example, the coating on the surface of the reflector slows down the aging speed under stable light and temperature conditions, and can maintain good reflective performance and maintain efficient operation of the system for a long time.

[0043] Specifically, two columns 6 are provided on the top of the support frame 1, a circular groove 61 is provided in the column 6, a sliding rod 62 slidably matched is provided in the circular groove 61, a spring 63 is provided between the sliding rod 62 and the circular groove 61, a resisting iron rod 64 is provided on the sliding rod 62, a contact switch cooperating with the resisting iron rod 64 is provided in the circular groove 61, and the contact switch is electrically connected to the drive motor 31.

[0044] During use, when the bottom of the arc frame 22 contacts the slide bar 62 downward, the downward movement of the slide bar 62 will cause the contact iron rod 64 to move downward and contact the contact switch, thereby controlling the drive motor 31 to stop working, preventing the arc frame 22 from rotating and causing the angle of the trough parabolic mirror 21 to rotate, causing damage to the trough parabolic mirror 21 due to the rotation of the arc frame 22. The spring 63 resets the position of the slide bar 62 after use.

[0045] Specifically, the heat energy conversion structure 4 includes four heat exchangers 41 arranged on the support frame 1 . The four heat exchangers 41 are interconnected, and the heat exchangers 41 have pipes connected to the water collecting tank 27 .

[0046] After the heat collecting pipe 24 generates heat to heat the water, the hot steam is transported to the heat exchanger 41 and then transported to the steam turbine 51 through the pipeline.

[0047] Specifically, the conversion power generation structure 5 includes a steam turbine 51 and a generator 52 . The steam turbine 51 is connected to the heat exchanger 41 , and the generator 52 is drivingly connected to the steam turbine 51 .

[0048] In the process of power generation, the steam turbine 51 drives the generator 52 to work, so that the generator 52 works to generate electricity, converting thermal energy into electrical energy.

[0049] A method for efficient thermal energy conversion based on thermal radiation, the conversion method comprising the following steps:

[0050] In the first step, the parabolic trough mirror 21 is used to collect sunlight onto the heat collecting tube 24, and the heat radiation in the sunlight is absorbed by the heat collecting tube 24;

[0051] In the second step, the heat absorbed by the heat collecting tube 24 is transferred to the heat transfer medium in the tube, so that the temperature of the heat transfer medium increases to form a high-temperature and high-pressure hot fluid, which is transported to the heat exchanger 41 through the pipeline to transfer the heat to the secondary working medium;

[0052] In the third step, the warm and high-pressure steam enters the steam turbine 51, driving the impeller of the steam turbine 51 to rotate, and the steam turbine 51 then drives the generator 52 to operate, thereby converting thermal energy into electrical energy.

[0053] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A highly efficient heat energy conversion device based on thermal radiation, characterized in that: The invention comprises a support frame (1), wherein a heat radiation structure (2) is provided on the top of the support frame (1), wherein the heat radiation structure (2) is rotatably connected to the support frame (1), wherein a rotation drive structure (3) is provided on the support frame (1), wherein the rotation drive structure (3) is transmission-connected to the heat radiation structure (2), wherein a heat energy conversion structure (4) is provided on the support frame (1), wherein the heat energy conversion structure (4) and the heat radiation structure (2) are interconnected, and wherein a conversion power generation structure (5) connected to the heat energy conversion structure (4) is provided on the support frame (1).

2. The high-efficiency heat energy conversion device based on thermal radiation according to claim 1, characterized in that: The heat radiation structure (2) comprises a trough parabolic mirror (21) and an arc frame (22), wherein the trough parabolic mirror (21) is mounted on the arc frame (22), a driving shaft (23) is provided on the arc frame (22), and the arc frame (22) is rotatably connected to the support frame (1) via the driving shaft (23).

3. The high-efficiency heat energy conversion device based on thermal radiation according to claim 2, characterized in that: A plurality of heat collecting tubes (24) arranged at equal intervals are arranged in the arc frame (22); the heat collecting tubes (24) are located on the back of the trough parabolic mirror (21); one end of the heat collecting tube (24) is fixed to the arc frame (22) by a bolt (26); the other end of the heat collecting tube (24) is provided with a pipe head (25); a water collecting trough (27) is provided on the arc frame (22); the other end of the heat collecting tube (24) is connected to the water collecting trough (27) through the pipe head (25).

4. The high-efficiency heat energy conversion device based on thermal radiation according to claim 2, characterized in that: The rotary drive structure (3) comprises a drive motor (31), a reducer (32), a first drive wheel (33), a second drive wheel (34) and a belt (35); the first drive wheel (33) is connected to the end of the drive shaft (23); the drive motor (31) is located on the reducer (32); the reducer (32) is located on the side wall of the support frame (1); the second drive wheel (34) is located on the main shaft of the reducer (32); and the belt (35) is sleeved on the first drive wheel (33) and the second drive wheel (34).

5. The high-efficiency heat energy conversion device based on thermal radiation according to claim 4, characterized in that: Two columns (6) are provided on the top of the support frame (1), a circular groove (61) is provided in the column (6), a sliding rod (62) for sliding fit is provided in the circular groove (61), a spring (63) is provided between the sliding rod (62) and the circular groove (61), a resisting iron rod (64) is provided on the sliding rod (62), a contact switch for fitting with the resisting iron rod (64) is provided in the circular groove (61), and the contact switch is electrically connected to the driving motor (31).

6. The high-efficiency heat energy conversion device based on thermal radiation according to claim 3, characterized in that: The heat energy conversion structure (4) comprises four heat exchangers (41) arranged on the support frame (1), the four heat exchangers (41) being interconnected, and the heat exchangers (41) are provided with pipes connected to the water collecting tank (27).

7. The high-efficiency heat energy conversion device based on thermal radiation according to claim 6, characterized in that: The conversion power generation structure (5) comprises a steam turbine (51) and a generator (52); the steam turbine (51) is connected to the heat exchanger (41); and the generator (52) is transmission-connected to the steam turbine (51).

8. A method for efficient thermal energy conversion based on thermal radiation according to any one of claims 1 to 7, characterized in that: The conversion method includes the following steps: In the first step, the sunlight is concentrated onto the heat collecting tube (24) by means of the parabolic trough mirror (21), and the heat radiation in the sunlight is absorbed by the heat collecting tube (24); In the second step, the heat absorbed by the heat collecting tube (24) is transferred to the heat transfer medium in the tube, so that the temperature of the heat transfer medium increases to form a high-temperature and high-pressure hot fluid, which is transported to the heat exchanger (41) through a pipeline to transfer the heat to the secondary working medium; In the third step, the warm and high-pressure steam enters the steam turbine (51), driving the impeller of the steam turbine (51) to rotate. The steam turbine (51) then drives the generator (52) to operate, thereby converting thermal energy into electrical energy.

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