Thermoelectric power generation system

Abstract

The utility model discloses a thermoelectric power generation system, which relates to the technical field of thermoelectric power generation and comprises a heat transfer pipe, a heat storage assembly, a power generation assembly, a cooling assembly and a power storage assembly, the heat transfer pipe is connected with the heat storage assembly, the heat storage assembly is connected with the power generation assembly, and the cooling assembly is connected with the power generation assembly. The output end of the power generation assembly is connected with the power storage assembly, and the output end of the power storage assembly is connected with an external load. According to the thermoelectric power generation system, the effect of controlling the power generation assembly to be connected with the first heat conduction plate can be achieved, when the temperature in the heat storage water tank is too low, connection with the power generation assembly can be disconnected, the effect of recovering the water temperature in the heat storage water tank is achieved, heat leakage is avoided, the power generation assembly is located in a high-efficiency power generation interval, and the service life of the power generation assembly is prolonged. And the power generation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature difference power generation, and more specifically to a temperature difference power generation system. Background Art

[0002] A thermoelectric device uses temperature differences to generate electricity or heat. These devices operate on two main principles: the thermoelectric effect and energy conversion through a heat engine, such as a Stirling engine. With the promotion of energy conservation and emission reduction, green energy sources such as temperature difference-generated electricity are gaining widespread application.

[0003] Geothermal energy is a natural energy source. By extracting heat without taking water, the green utilization of geothermal energy is improved. For example, the Chinese patent with application number 202011070192.5 discloses a geothermal power generation device, the structure of which includes a heat collecting tube, a connecting tube, a heat conducting tube, a thermoelectric power generation component and a cooling water tank. The heat collecting tube has a heat source accommodating cavity and an air inlet connected to the heat source accommodating cavity; the heat conducting tube has a heat mass accommodating cavity; the heat collecting tube and the heat conducting tube are connected by a connecting tube, and the heat source accommodating cavity, the interior of the connecting tube and the heat mass accommodating cavity are connected in sequence; the thermoelectric power generation component includes a plurality of thermoelectric sheets connected in series; the thermoelectric power generation component is arranged between the outer wall surface of the heat conducting tube and the outer wall surface of the cooling water tank, and one side of the thermoelectric sheet abuts the outer wall surface of the heat conducting tube, and the other side abuts the outer wall surface of the cooling water tank. This geothermal power generation device also has the following problems when in use:

[0004] 1. When water flows, it will directly or indirectly come into contact with the thermoelectric power generation components. After coming into contact with multiple groups of thermoelectric power generation components, the temperature of the water will drop, thereby affecting the subsequent power generation efficiency. Since the power generation efficiency of the thermoelectric power generation device is related to the temperature difference on both sides, the power generation efficiency will be highly efficient only when the temperature difference is within a certain range. When the temperature drops to a certain level, heat leakage will occur, which will not only affect the power generation efficiency, but also affect the thermoelectric power generation components.

[0005] 2. When performing temperature difference power generation, a separate cooling water tank needs to be set up to create a temperature difference, which not only increases production costs but also increases water usage.

[0006] Therefore, it is necessary to propose a temperature difference power generation system to solve the above problems. Utility Model Content

[0007] In response to the above problems, the present invention provides a temperature difference power generation system, which has the function of improving the efficient power generation of the power generation components, reducing the impact of water temperature fluctuations on the power generation components, and at the same time, avoiding heat leakage.

[0008] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0009] A thermoelectric power generation system includes a heat transfer pipe, a heat storage component, a power generation component, a cooling component, and a power storage component. The heat transfer pipe is connected to the heat storage component, the heat storage component is connected to the power generation component, the cooling component is connected to the power generation component, the output end of the power generation component is connected to the power storage component, and the output end of the power storage component is connected to an external load.

[0010] An annular frame is connected to the outer wall of the heat transfer pipe, the heat storage assembly includes a hot water storage tank, a control assembly located on the top of the hot water storage tank, the end of the hot water storage tank away from the heat transfer pipe is connected to a first heat conducting plate and an accordion cover, the end of the accordion cover away from the hot water storage tank is connected to a movable frame, the interior of the movable frame is connected to a power generation assembly and a cooling assembly, and the power generation assembly is located on the side close to the hot water storage tank;

[0011] The control component includes a fixed frame located at the top of the hot water storage tank, and a moving block located inside the fixed frame. A cavity is opened inside the fixed frame, and the moving block is slidably connected to the cavity. One end of the cavity is connected to a temperature sensing component, and one end of the temperature sensing component is connected to the moving block. The top of the fixed frame is connected to an air inlet pipe and a one-way valve, and the air inlet pipe and the one-way valve are connected to the cavity. The bottom of the cavity is symmetrically connected to a guide pipe extending into the accordion cover, and two flow grooves are opened inside the moving block.

[0012] Preferably, the distance between the two flow grooves is smaller than the distance between the air inlet pipe and the one-way valve, and the temperature sensing component is located at one end close to the air inlet pipe.

[0013] Preferably, the temperature sensing component includes a temperature sensing tube and a bellows connected to one end of the temperature sensing tube, and one end of the temperature sensing tube extends into the hot water storage tank.

[0014] Preferably, a guide rod is connected to the top of the hot water storage tank, and the movable frame is slidably connected to the guide rod.

[0015] Preferably, one end of the guide rod is connected to a strip frame, the top of the cooling assembly is connected to a water inlet pipe, and the bottom of the cooling assembly is connected to a water outlet pipe.

[0016] Preferably, a spring is connected between the movable frame and the strip frame.

[0017] Preferably, a liquid flow channel is provided inside the cooling component.

[0018] Preferably, a second heat conducting plate extending into the hot water storage tank is connected to the inner wall of the heat transfer pipe.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. This device is equipped with a control component on the hot water storage tank, which can control the connection between the power generation component and the first heat conduction plate. When the temperature in the hot water storage tank is too low, the connection with the power generation component can be disconnected to restore the water temperature in the hot water storage tank. It also avoids the occurrence of heat leakage, so that the power generation component is located in the efficient power generation range, thereby improving the power generation efficiency.

[0021] 2. This device is equipped with a heat storage tank on the heat pipe, which improves the overall heat storage capacity. When the temperature in the heat pipe fluctuates greatly, it can stabilize the water temperature by absorbing and releasing heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the connection status of components in the present invention;

[0023] Figure 2 This is a schematic diagram of the heat transfer pipe and power generation assembly structure of the utility model;

[0024] Figure 3 It is a schematic diagram of the structure of the power generation component and the first heat conducting plate in the present utility model;

[0025] Figure 4 It is a schematic diagram of the fixed frame and movable block structure in the utility model.

[0026] Reference numerals:

[0027] 101. Heat transfer pipe; 102. Heat storage component; 103. Power generation component; 104. Cooling component; 105. Power storage component; 106. Ring frame; 107. Heat storage tank; 108. First heat conduction plate; 109. Organ cover; 110. Moving frame; 111. Spring; 112. Second heat conduction plate; 113. Fixed frame; 114. Moving block; 115. Cavity; 116. Air inlet pipe; 117. One-way valve; 118. Guide pipe; 119. Flow trough; 120. Temperature sensing tube; 121. Bellows; 122. Guide rod; 123. Strip frame. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-4A temperature difference power generation system includes a heat pipe 101, a heat storage component 102, a power generation component 103, a cooling component 104 and a power storage component 105. Preferably, the heat pipe 101 is installed on the geothermal pipeline, and the cooling component 104 is connected to the return water pipeline. The outlet water temperature of the geothermal well is generally 80 degrees, while the return water temperature is more than 20 degrees. The temperature difference at this time can generate electricity efficiently. The power storage component 105 is preferably a lead-acid battery. The heat pipe 101 is connected to the heat storage component 102, and the heat storage component 102 is connected to the power generation component 1 03 is connected, the cooling component 104 is connected to the power generation component 103, the heat transfer pipe 101 indirectly supplies heat to the power generation component 103 through the heat storage component 102, and the cooling component 104 dissipates heat from the other end of the power generation component 103, thereby generating a temperature difference. The output end of the power generation component 103 is connected to the power storage component 105, and the output end of the power storage component 105 is connected to an external load. The electricity generated by the power generation component 103 is first stored in the power storage component 105, and then the load is driven by the power storage component 105;

[0030] The outer wall of the heat transfer pipe 101 is connected to an annular frame 106, which is fixed on the heat transfer pipe 101 and is used to fix the heat storage component 102 on the heat transfer pipe 101. Hot water flows inside the heat transfer pipe 101. The heat storage component 102 includes a hot water storage tank 107 and a control component located on the top of the hot water storage tank 107. The hot water storage tank 107 stores heat-conducting liquid. When the temperature in the heat transfer pipe 101 is too high, the heat will be stored in the heat-conducting liquid. When the temperature in the heat transfer pipe 101 is too low, the heat-conducting liquid will transfer the heat back to the heat transfer pipe 101, thereby increasing the water temperature in the heat transfer pipe 101. The end of the hot water storage tank 107 away from the heat transfer pipe 101 is connected to a first heat conducting plate 108 and an accordion cover 109. The end of the accordion cover 109 away from the hot water storage tank 107 is connected to a movable frame 110. When the accordion cover 109 is extended, the power generation component 103 and The distance between the first heat conducting plates 108 increases. When the accordion cover 109 is retracted, the power generation component 103 and the first heat conducting plate 108 are attached together, so that the heat in the hot water tank 107 is transferred to the power generation component 103 through the first heat conducting plate 108. The mobile frame 110 is internally connected with the power generation component 103 and the cooling component 104. The power generation component 103 is located on the side close to the hot water tank 107. When the water temperature in the heat transfer pipe 101 decreases, the temperature of the heat-conducting liquid in the hot water tank 107 decreases. At this time, the power generation efficiency of the power generation component 103 attached to the first heat conducting plate 108 decreases due to the reduction in temperature difference. When the temperature drops to a certain level, heat leakage will occur. At this time, the power generation component 103 and the first heat conducting plate 108 are separated, so as to achieve the effect of heat storage for the liquid in the hot water tank 107 and avoid the occurrence of heat leakage.

[0031] The control component includes a fixed frame 113 located on the top of the hot water storage tank 107, and a moving block 114 located in the fixed frame 113. A cavity 115 is provided inside the fixed frame 113. The movement of the moving block 114 in the cavity 115 controls the air intake and exhaust. The moving block 114 is slidably connected to the cavity 115. One end of the cavity 115 is connected to a temperature sensing component. The movement of the temperature sensing component drives the moving block 114 to move. One end of the temperature sensing component is connected to the moving block 114. The top of the fixed frame 113 is connected to the temperature sensing component. It is connected to an air inlet pipe 116 and a one-way valve 117. The one-way valve 117 is used to discharge the gas in the accordion cover 109, so that the power generation component 103 and the first heat conduction plate 108 are fitted together. The air inlet pipe 116 and the one-way valve 117 are connected to the cavity 115. The bottom of the cavity 115 is symmetrically connected to a guide pipe 118 extending into the accordion cover 109. Two flow grooves 119 are provided inside the moving block 114. When the guide pipe 118 and the one-way valve 117 are connected, the spring 111 will push the moving frame 110 to move toward the first heat conduction plate 108.

[0032] Specifically, the distance between the two flow grooves 119 is smaller than the distance between the air inlet pipe 116 and the one-way valve 117, so that there are only two states: the air inlet pipe 116 is connected to the guide pipe 118, or the one-way valve 117 is connected to the guide pipe 118. When the air inlet pipe 116 is connected to the guide pipe 118, air will be escorted into the accordion cover 109, so that a certain distance is maintained between the power generation component 103 and the first heat conduction plate 108. When the one-way valve 117 and the guide pipe 118 are connected, the air in the accordion cover 109 will be discharged, and the temperature sensing component is located at one end close to the air inlet pipe 116.

[0033] Specifically, the temperature sensing component includes a temperature sensing tube 120 and a bellows 121 connected to one end of the temperature sensing tube 120. When the water temperature in the hot water tank 107 rises, the gas in the temperature sensing tube 120 expands, thereby pushing the bellows 121 to move toward the other side, thereby pushing the moving block 114 to move. One end of the temperature sensing tube 120 extends into the hot water tank 107.

[0034] Specifically, a guide rod 122 is connected to the top of the hot water storage tank 107 . The guide rod 122 has a guiding function, and the movable frame 110 is slidably connected to the guide rod 122 .

[0035] Specifically, one end of the guide rod 122 is connected to a strip frame 123, and the top of the cooling component 104 is connected to a water inlet pipe. The water inlet pipe and the water outlet pipe are fixed on the strip frame 123. Preferably, the water inlet pipe and the water outlet pipe are soft water pipes so that they can move with the cooling component 104. The bottom of the cooling component 104 is connected to the water outlet pipe.

[0036] Specifically, a spring 111 is connected between the movable frame 110 and the strip frame 123 to discharge the gas in the accordion cover 109 .

[0037] Specifically, a liquid flow channel is provided inside the cooling component 104 , and the liquid flow channel is connected to a water inlet pipe and a water outlet pipe, so that one side of the power generation component 103 is cooled by the flowing water.

[0038] Specifically, a second heat conducting plate 112 extending into the hot water storage tank 107 is connected to the inner wall of the heat transfer pipe 101. The heat of the liquid in the heat transfer pipe 101 is transferred to the hot water storage tank 107 through the second heat conducting plate 112. The first heat conducting plate 108 and the second heat conducting plate 112 are made of heat conductive material.

[0039] In this embodiment, the heat transfer pipe 101 is installed on the hot water delivery pipeline, and the heat of the liquid is transferred to the heat-conducting liquid in the hot water storage tank 107, and then transferred to the power generation component 103 through the first heat conduction plate 108, so that the power generation component 103 generates electricity. When the temperature in the hot water storage tank 107 drops, the bellows 121 contracts, so that the air inlet pipe 116 and the guide pipe 118 are connected, thereby filling the accordion cover 109 with gas, disconnecting the power generation component 103 and the first heat conduction plate 108 to avoid heat leakage, until the temperature in the hot water storage tank 107 gradually rises, the bellows 121 extends, and the one-way valve 117 and the guide pipe 118 are connected, so that the internal air is discharged, and the power generation component 103 generates electricity again.

[0040] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A thermoelectric power generation system, characterized by: The heat transfer device comprises a heat transfer pipe (101), a heat storage component (102), a power generation component (103), a cooling component (104) and a power storage component (105); the heat transfer pipe (101) is connected to the heat storage component (102); the heat storage component (102) is connected to the power generation component (103); the cooling component (104) is connected to the power generation component (103); the output end of the power generation component (103) is connected to the power storage component (105); and the output end of the power storage component (105) is connected to an external load. An annular frame (106) is connected to the outer wall of the heat transfer pipe (101); the heat storage assembly (102) comprises a hot water storage tank (107) and a control assembly located on the top of the hot water storage tank (107); an end of the hot water storage tank (107) away from the heat transfer pipe (101) is connected to a first heat conducting plate (108) and an accordion cover (109); an end of the accordion cover (109) away from the hot water storage tank (107) is connected to a movable frame (110); a power generation assembly (103) and a cooling assembly (104) are connected inside the movable frame (110); the power generation assembly (103) is located on a side close to the hot water storage tank (107); The control component includes a fixed frame (113) located at the top of the hot water storage tank (107), and a moving block (114) located in the fixed frame (113); a cavity (115) is provided inside the fixed frame (113); the moving block (114) is slidably connected to the cavity (115); one end of the cavity (115) is connected to a temperature sensing component; one end of the temperature sensing component is connected to the moving block (114); the top of the fixed frame (113) is connected to an air inlet pipe (116) and a one-way valve (117); the air inlet pipe (116) and the one-way valve (117) are connected to the cavity (115); the bottom of the cavity (115) is symmetrically connected to a guide pipe (118) extending into the accordion cover (109); and two flow grooves (119) are provided inside the moving block (114).

2. The thermoelectric power generation system according to claim 1, characterized in that: The distance between the two flow grooves (119) is smaller than the distance between the air inlet pipe (116) and the one-way valve (117), and the temperature sensing component is located at one end close to the air inlet pipe (116).

3. The thermoelectric power generation system according to claim 2, characterized in that: The temperature sensing component comprises a temperature sensing tube (120) and a corrugated tube (121) connected to one end of the temperature sensing tube (120), and one end of the temperature sensing tube (120) extends into the hot water storage tank (107).

4. The thermoelectric power generation system according to claim 3, characterized in that: The top of the hot water storage tank (107) is connected to a guide rod (122), and the movable frame (110) is slidably connected to the guide rod (122).

5. The thermoelectric power generation system according to claim 4, characterized in that: One end of the guide rod (122) is connected to a strip frame (123), the top of the cooling assembly (104) is connected to a water inlet pipe, and the bottom of the cooling assembly (104) is connected to a water outlet pipe.

6. The thermoelectric power generation system according to claim 5, characterized in that: A spring (111) is connected between the movable frame (110) and the strip frame (123).

7. The thermoelectric power generation system according to claim 1, characterized in that: A liquid flow channel is provided inside the cooling component (104).

8. The thermoelectric power generation system according to claim 1, characterized in that: The inner wall of the heat transfer pipe (101) is connected to a second heat conduction plate (112) extending into the hot water storage tank (107).

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