Separated heat pipe power generation and thermal control system

Abstract

The utility model belongs to the technical field of thermoelectric conversion, and particularly relates to a separation type heat pipe power generation and thermal control system which comprises an evaporator, a condenser and a generator, the evaporator is connected with the condenser through a steam pipe, the condenser is connected with the evaporator through a liquid return pipe, and the generator comprises a rotor part and a stator part. The rotor part is rotatably arranged in the steam pipe through a support, a gap for steam to flow is arranged between the side face of the rotor part and the inner wall of the steam pipe and / or on the support, blades are arranged at the end, facing the evaporator, of the rotor part, and the stator part is arranged outside the steam pipe and corresponds to the rotor part in position. The energy utilization of steam in the separated heat pipe is more sufficient, the energy waste is reduced, the utilization rate is improved, the heat transfer performance of the separated heat pipe is improved, the service life of the separated heat pipe is prolonged, and the operation reliability of the system is higher.

Description

Technical Field

[0001] This utility model belongs to the field of thermoelectric conversion technology, specifically relating to a split heat pipe power generation and thermal control system. Background Technology

[0002] As a heat transfer element with high thermal conductivity, a heat pipe, within a fully enclosed vacuum shell, facilitates heat transfer between objects at different temperatures through the evaporation and condensation of the working fluid, playing a crucial role in improving energy efficiency. The split-type heat pipe, developed from conventional heat pipe heat exchangers, is characterized by its separate evaporation and condensation sections, connected by corresponding pipes to form a circulation loop. The working fluid evaporates in the evaporation section, forming rising vapor that enters the condenser, releasing latent heat and condensing into a liquid state. Under the influence of gravity or other forces, the liquid working fluid returns to the evaporator via a downcomer, completing the working fluid cycle.

[0003] However, energy waste inherent in split heat pipe cycles is actually present, especially in the evaporation section. Due to the lower gas density and higher flow rate in the evaporation section, excessively high vapor velocity increases flow resistance, leading to energy waste. It can also cause uneven temperature distribution, erosion or vibration of the heat pipe, and excessive extraction of liquid from the evaporation section, affecting the heat transfer performance and lifespan of the heat pipe. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a split heat pipe power generation and thermal control system, which aims to make fuller use of the energy of steam in the split heat pipe, improve the heat transfer performance and service life of the split heat pipe, and make the system more reliable in operation.

[0005] The present invention includes an evaporator, a condenser, and a generator. The evaporator is connected to the condenser via a steam pipe, and the condenser is connected to the evaporator via a return pipe. The generator includes a rotor and a stator. The rotor is rotatably mounted inside the steam pipe via a support. A space for steam flow is provided between the side of the rotor and the inner wall of the steam pipe and / or on the support. Blades are provided at the end of the rotor facing the evaporator. The stator is located outside the steam pipe and corresponds to the position of the rotor.

[0006] Furthermore, the support includes a cylindrical body and several support plates, which are circumferentially spaced on the inner wall of the steam pipe. The cylindrical body is disposed between the support plates and coaxially with the steam pipe, and the rotor is rotatably disposed inside the cylindrical body.

[0007] Furthermore, the end of the cylinder facing the evaporator is sealed by a baffle, and the end of the rotor facing the evaporator is provided with a rotating shaft. The rotating shaft passes through the baffle and rotates with the baffle. The blades are located at the end of the rotating shaft located outside the cylinder.

[0008] Furthermore, the steam pipe includes a steam riser section and a connecting pipe section. One end of the steam riser section is connected to the evaporator, and the other end is connected to the condenser through the connecting pipe section. The support and rotor are located inside the steam riser section.

[0009] Furthermore, the rotor section is a coil, and the stator section is a magnet.

[0010] Furthermore, the rotor section is a magnet, and the stator section is a coil.

[0011] Furthermore, the steam riser pipe section is made of insulating material.

[0012] Furthermore, the magnet is an electromagnet.

[0013] Furthermore, the outlet of the evaporator is equipped with a pressure detection module one, and the steam riser section is equipped with a pressure detection module two at the end of the rotor section facing away from the evaporator.

[0014] Furthermore, the outlet of the evaporator is equipped with a temperature detection module one, and the outlet of the condenser is equipped with a temperature detection module two.

[0015] The beneficial effects of this invention are that, during the flow of steam from the inside of the evaporator along the steam pipe to the condenser, the steam drives the blades to rotate when it passes through the area where the rotor is located. The blades then drive the rotor to rotate, thereby utilizing the kinetic energy of the steam to generate electricity. This makes more efficient use of the energy of the steam in the split heat pipe, reduces energy waste, and improves utilization efficiency. Based on the original heat transfer function of the split heat pipe, it not only makes fuller use of steam energy, but the rotor and blade configuration also slows down the steam flow rate to a certain extent, reducing problems such as uneven temperature distribution, erosion or vibration of the heat pipe, and excessive suction of liquid in the evaporation section caused by excessive flow velocity, thus improving the heat transfer performance and service life of the split heat pipe.

[0016] Compared to methods that only place the blades inside the steam pipe, this invention places the blades and rotor directly inside the steam pipe, eliminating the need for a rotary seal structure on the pipe wall at the connection between the blades and rotor. This avoids the problem of steam pipe leakage caused by the wear and failure of the rotary seal structure due to continuous friction, thus better ensuring the overall sealing performance of the split heat pipe and improving the reliability of system operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the split heat pipe power generation and thermal control system of this utility model.

[0018] Figure 2 This is a schematic diagram of the generator of this utility model installed in the steam riser pipe section.

[0019] Figure 3 This utility model Figure 2 A schematic diagram from an axial perspective.

[0020] Figure 4 This utility model Figure 2 A schematic diagram of the structure after removing the baffle.

[0021] In the diagram: 1. Evaporator; 2. Condenser; 3. Generator; 31. Rotor; 32. Stator; 33. Shaft; 34. Blades; 4. Steam riser section; 5. Support; 51. Shell; 52. Support plate; 53. Baffle; 6. Pressure detection module one; 7. Temperature detection module one; 8. Pressure detection module two; 9. Temperature detection module two; 10. Control host. Detailed Implementation

[0022] like Figures 1-4 As shown, this utility model provides a split heat pipe power generation and thermal control system, including an evaporator 1, a condenser 2, and a generator 3. The outlet of the evaporator 1 is connected to the inlet of the condenser 2 via a steam pipe, and the outlet of the condenser 2 is connected to the inlet of the evaporator 1 via a return pipe, forming a working fluid circulation loop. The generator 3 is a generator based on the principle of electromagnetic induction, which includes a rotor 31 and a stator 32. Power generation is achieved through the relative rotation of the rotor 31 and the stator 32. This principle is existing technology and will not be described in detail here. The rotor 31 is rotatably mounted inside the steam pipe via a support 5. A gap for steam flow is provided between the side of the rotor 31 and the inner wall of the steam pipe and / or on the support 5, allowing steam to pass normally through the area where the rotor 31 is located. A blade 34 is provided at the end of the rotor 31 facing the evaporator 1. Figure 1 Taking a perspective example, the end of rotor 31 facing the direction of evaporator 1 is the end of rotor 31 in... Figure 1 The lower end of the rotor section 31 in the view, the end facing away from the evaporator 1, is the rotor section 31 at... Figure 1 The upper part in the view. The stator section 32 is located outside the steam pipe and corresponds to the position of the rotor section 31.

[0023] In use, the working fluid changes from liquid to gas inside the evaporator 1, rapidly expanding in volume. The resulting pressure causes steam to rise and flow along the steam pipe towards the condenser 2. During this process, as the steam passes through the area where the rotor section 31 is located, it drives the blades 34 to rotate. The blades 34 then drive the rotor section 31 to rotate, thereby utilizing the kinetic energy of the steam to generate electricity. This method makes more efficient use of the energy of the steam in the split heat pipe, reducing energy waste and improving utilization efficiency. Based on the original heat transfer function of the split heat pipe, it not only makes fuller use of steam energy, but the arrangement of the rotor section 31 and the blades 34 also slows down the steam flow rate to a certain extent, reducing problems such as uneven temperature distribution, erosion or vibration of the heat pipe, and excessive extraction of liquid from the evaporation section caused by excessive flow rate, thus improving the heat transfer performance and service life of the split heat pipe. Compared to the method of simply placing the blades 34 inside the steam pipe, the blades 34 and the rotor 31 of this utility model are directly placed inside the steam pipe. There is no need to set a rotary sealing structure on the pipe wall for the connection between the blades 34 and the rotor 31. This can avoid the problem of steam pipe leakage caused by the failure of the rotary sealing structure due to continuous friction. It can better ensure the overall sealing performance of the split heat pipe and improve the reliability of system operation.

[0024] When the steam flows into condenser 2, it releases heat and condenses into a liquid. At this time, the temperature of the working fluid decreases, and the pressure also decreases. The condensed liquid working fluid flows back to the evaporation section through the return pipe under the action of gravity or other forces.

[0025] The support 5 includes a cylindrical body 51 and several support plates 52. The support plates 52 are circumferentially spaced on the inner wall of the steam pipe. The cylindrical body 51 is positioned between the support plates 52 and coaxially with the steam pipe. The rotor 31 is rotatably mounted inside the cylindrical body 51. Steam can pass through the gaps between adjacent support plates 52 along the circumferential direction of the inner wall of the steam pipe; that is, the gaps for steam flow in the area where the rotor 31 is located are set on the support 5. Based on this structural design of the support 5, it is easier to install the rotor 31 while ensuring smooth steam flow.

[0026] Preferably, the end of the cylinder 51 facing the evaporator 1 is sealed by a baffle 53, and the end of the rotor 31 facing the evaporator 1 is provided with a rotating shaft 33. The rotating shaft 33 passes through the baffle 53 and rotates with the baffle 53, that is, one end of the rotating shaft 33 is connected to the rotor 31, and the other end extends to the outside of the cylinder 51. The blades 34 are located at the end of the rotating shaft 33 outside the cylinder 51, and the rotating shaft 33 is the connection point between the blades 34 and the rotor shaft. Based on this arrangement, the corrosion problem of the rotor 31 caused by long-term direct contact between the steam flowing towards the condenser 2 and the rotor 31 can be avoided, which helps to improve the service life of the rotor 31. Alternatively, a cover plate can be provided to seal the end of the cylinder 51 facing away from the evaporator 1.

[0027] like Figure 1 As shown, the steam pipe specifically includes a steam riser section 4 and a connecting pipe section. One end of the steam riser section 4 is connected to the evaporator 1, and the other end is connected to the condenser 2 via the connecting pipe section. The support 5 and the rotor 31 are located inside the steam riser section 4, which can more effectively utilize the upward kinetic energy of the steam. Preferably, the steam riser section 4 is made of an insulating material, such as ceramic, to avoid affecting the normal power generation operation of the generator 3, improve the safety and reliability of the system, and prevent electrical faults.

[0028] In one embodiment of this utility model, the rotor part 31 is a coil, and the stator part 32 is a magnet. In this embodiment, the generator 3 is a DC generator, and the power generation principle is the same as that of the prior art. Its commutator and brush are also arranged inside the cylinder 51 and located at the end of the cylinder 51 away from the evaporator 1. The wires connecting the brushes extend to the outside through the pipe wall of the steam riser section 4.

[0029] In another embodiment of this invention, the rotor portion 31 is a magnet, and the stator portion 32 is a coil. In this embodiment, the generator 3 is an AC motor, and the power generation principle is the same as that of the prior art.

[0030] Based on the two embodiments of the DC generator and the AC generator described above, the magnet can be a common magnet with a fixed magnetic field strength. However, to improve the controllability of the system operation and ensure the effectiveness of the heat transfer function of the split heat pipe itself, the magnet is preferably an electromagnet. By changing the strength of the current passing through the electromagnet, the magnetic field strength of the electromagnet is changed, thereby changing the rotational resistance of the blades 34 and thus changing the pressure loss of steam passing through the area where the rotor section 31 is located. For example, when the magnetic field strength decreases, the rotational resistance of the blades 34 is smaller, which can reduce the pressure loss of steam passing through the area where the rotor section 31 is located.

[0031] In the embodiment where the generator 3 is an AC generator and the magnet is an electromagnet, the slip ring structure connected to it is also set inside the cylinder 51 and located at the end of the cylinder 51 away from the evaporator 1. The wires connecting the slip ring structure extend to the outside through the pipe wall of the steam riser section 4.

[0032] The outlet of the evaporator 1 is equipped with a pressure detection module 6 and a temperature detection module 7. Pressure detection module 6 detects the steam pressure at the outlet of evaporator 1, which is considered the outlet pressure of evaporator 1. Temperature detection module 7 detects the steam temperature at the outlet of evaporator 1, which is considered the outlet temperature of evaporator 1. A pressure detection module 8 is installed at the end of the steam riser section 4 located away from the rotor section 31, to detect the steam pressure after passing through the area of ​​rotor section 31; this pressure is considered the outlet pressure of generator 3. A temperature detection module 9 is installed at the outlet of the condenser 2 to detect the temperature of the liquid working fluid at the outlet of condenser 2; this temperature is considered the outlet temperature of condenser 2. The actual measured values ​​of the aforementioned pressure and temperature reflect the operating status of the system.

[0033] Among them, pressure detection module 6 and pressure detection module 8 can be pressure sensors or other detection modules. Temperature detection module 7 and temperature detection module 9 can be temperature sensors or other detection modules.

[0034] like Figure 1 As shown by the dotted lines, generator 3, pressure detection module 1 6, pressure detection module 2 8, temperature detection module 1 7, and temperature detection module 2 9 are all electrically connected to the control host 10. Based on this, the parameters of generator 3 can be adjusted according to different operating conditions to ensure the system operates at its optimal state, thereby improving power generation efficiency and guaranteeing heat transfer performance.

[0035] For example, in the operation mode where the generator 3 generates electricity, if the actual difference between the outlet pressure of the evaporator 1 and the outlet pressure of the generator 3 is different from the set difference between the outlet pressure of the evaporator 1 and the outlet pressure of the generator 3, and / or if the actual difference between the outlet temperature of the evaporator 1 and the outlet temperature of the condenser 2 is different from the set difference between the outlet temperature of the evaporator 1 and the outlet temperature of the condenser 2, the user can actively operate or control the host 10 to operate according to the preset content, adjust the magnetic field strength of the electromagnet, and change the pressure loss when the steam passes through the area where the rotor 31 is located, so that the current operation mode is the optimal operating state.

[0036] When generator 3 is a DC generator, based on the reversible principle of DC generators, in some application scenarios, this invention can not only operate by generating electricity through generator 3, but also actively output mechanical energy through generator 3 to enhance the heat transfer performance of the separate heat pipes. This enriches the system's functionality, improves its flexibility, and meets different user needs. In this enhanced heat transfer performance operation mode, generator 3 operates actively after being supplied with the corresponding DC power. The rotor 31 drives the blades 34 to rotate, and the generator 3 as a whole acts as a fan to accelerate the circulation in the heat pipes, enhancing heat transfer and improving heat transfer performance with small temperature differences. Furthermore, the rotational resistance of blades 34 can be changed by adjusting the magnetic field strength of the electromagnet, thereby changing the rotational speed of blades 34 and adjusting the heat transfer performance.

[0037] In other implementations, measurements of the current and voltage of generator 3 and the wall temperatures of the steam pipe and return pipe can also be used to reflect the system's operating status.

[0038] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0039] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A split heat pipe power generation and thermal control system, characterized by, The device includes an evaporator (1), a condenser (2), and a generator (3). The evaporator (1) is connected to the condenser (2) via a steam pipe, and the condenser (2) is connected to the evaporator (1) via a return pipe. The generator (3) includes a rotor (31) and a stator (32). The rotor (31) is rotatably disposed inside the steam pipe via a bracket (5). A space for steam flow is provided between the side of the rotor (31) and the inner wall of the steam pipe and / or on the bracket (5). A blade (34) is provided at one end of the rotor (31) facing the direction of the evaporator (1). The stator (32) is disposed outside the steam pipe and corresponds to the position of the rotor (31).

2. The split heat pipe power and thermal control system of claim 1, wherein, The support (5) includes a cylinder (51) and several support plates (52). The several support plates (52) are circumferentially spaced on the inner wall of the steam pipe. The cylinder (51) is arranged between the several support plates (52) and coaxially with the steam pipe. The rotor (31) is rotatably arranged inside the cylinder (51).

3. The split heat pipe power generation and thermal control system as described in claim 2, characterized in that, The end of the cylinder (51) facing the evaporator (1) is closed by a baffle (53). The rotor (31) facing the evaporator (1) is provided with a rotating shaft (33). The rotating shaft (33) passes through the baffle (53) and rotates with the baffle (53). The blade (34) is provided at the end of the rotating shaft (33) located outside the cylinder (51).

4. The split heat pipe power generation and thermal control system as described in any one of claims 1-3, characterized in that, The steam pipe includes a steam riser section (4) and a connecting pipe section. One end of the steam riser section (4) is connected to the evaporator (1), and the other end is connected to the condenser (2) through the connecting pipe section. The support (5) and the rotor (31) are located inside the steam riser section (4).

5. The split heat pipe power generation and thermal control system as described in claim 4, characterized in that, The rotor part (31) is a coil, and the stator part (32) is a magnet.

6. The split heat pipe power generation and thermal control system as described in claim 4, characterized in that, The rotor part (31) is a magnet, and the stator part (32) is a coil.

7. The split heat pipe power generation and thermal control system as described in claim 5 or 6, characterized in that, The steam riser section (4) is made of insulating material.

8. The split heat pipe power generation and thermal control system as described in claim 5 or 6, characterized in that, The magnet is an electromagnet.

9. The split heat pipe power generation and thermal control system as described in claim 8, characterized in that, The outlet of the evaporator (1) is equipped with a pressure detection module one (6), and the steam riser pipe section (4) is equipped with a pressure detection module two (8) at the end of the rotor section (31) away from the evaporator (1).

10. The split heat pipe power generation and thermal control system as described in claim 9, characterized in that, The outlet of the evaporator (1) is also equipped with a temperature detection module one (7), and the outlet of the condenser (2) is equipped with a temperature detection module two (9).

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