Heat pipe collector with turbine device

Abstract

The utility model provides a heat pipe heat collector with a turbine device, which comprises a double-layer vacuum glass pipe, a heat pipe penetrating through the center of the vacuum glass pipe, a heat conducting fin arranged inside the vacuum glass pipe and a header pipe connected with one end of the vacuum glass pipe and one end of the heat pipe, and the heat conducting fin is arranged between the outer side of the heat pipe and the inner wall of the vacuum glass pipe. A sealing ring is arranged at the joint of the vacuum glass tube and the header tube, the vacuum glass tube and the header tube are connected in a sealed mode, a heat conduction block is arranged at the joint of the heat tube and the header tube, and a turbine device is arranged on the outer side of the heat conduction block in a sleeved mode. According to the heat pipe heat collector with the turbine device, the turbine device is additionally arranged on the heat conduction block, the convection heat exchange effect is improved, and therefore the heat exchange efficiency is improved, in addition, the turbine is in the rotating state, the scaling phenomenon can be weakened, and the problems that in the prior art, a heat pipe heat collector is prone to scaling, and the heat exchange efficiency is not high are effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of collectors, and specifically relates to a heat pipe collector with a turbine device. Background Art

[0002] At present, the commonly used solar heat pipe collecting devices in China mainly include three types: all-glass vacuum heat pipes, glass tube-U-shaped tubes, and glass tube-metal heat pipes. A glass tube-metal heat pipe collector generally consists of a double-layer glass vacuum tube, an absorption coating, heat conduction fins (aluminum wings), a heat pipe, a heat conduction block, a header pipe, a heat preservation box, a sealing ring, etc. Its basic working principle is as follows: sunlight passes through the vacuum glass tube and irradiates on the selective absorption film on the inner tube of the vacuum glass tube. The film layer converts solar energy into heat energy, and the heat energy is transmitted to the built-in heat pipe through the aluminum wings, quickly heating and vaporizing the working medium in the evaporation end of the heat pipe. The vaporized working medium rises to the condensation end of the heat pipe, causing the condensation end to quickly heat up, and the energy is conducted and collected to the medium (such as water, ethylene glycol, etc.) in the header pipe through the heat conduction block. After the heat pipe working medium releases the latent heat of vaporization, it condenses into a liquid and flows back to the evaporation end of the heat pipe under the action of gravity. After receiving heat, it vaporizes and rises again, and condenses and flows back again, working in a cycle. The heat pipe collector continuously absorbs solar radiation energy through the vapor-liquid phase change cycle process of the working medium in the heat pipe to provide heat energy for the system. Since the condensation end of the heat pipe transfers heat to the working medium in the header pipe through the heat conduction block, the diameter of the header pipe is small, the internal working medium flows slowly, the heat transfer efficiency is not high, and scale is easily formed (when the working medium is water), which affects the service life and heat exchange efficiency of the heat pipe collector and increases the maintenance cost.

[0003] In the prior art, anti-freeze can be used for indirect heating to reduce scale formation, but the anti-freeze is corrosive and affects the service life; the heat exchange efficiency can also be improved by adding a turbulence generator at the inlet of the header pipe, but at the same time, the use cost is increased and the pressure drop loss at the inlet and outlet is increased. The Chinese utility model patent with the publication number CN221005523U proposes a large-diameter glass super heat pipe collector, which improves the heat transfer efficiency and reduces scale formation by increasing the diameter of the header pipe. However, after the large diameter, the temperature rise of the working medium is small and the glass super heat pipe is prone to bursting, and the maintenance cost is relatively high. The Chinese utility model patent with the publication number CN201436509U discloses a vacuum heat pipe collector. This solution sets a horizontal super heat pipe, a vertical superconducting large heat pipe, and a heat exchange rod. After the horizontal super heat pipe absorbs solar energy, its condensation end is connected to the heat exchange rod, and the evaporation end of the vertical superconducting large heat pipe is connected to the heat exchange rod, and the condensation end is directly connected to the water tank. The heat transfer efficiency is improved and scale formation is reduced by the series connection of two heat pipes, namely the horizontal super heat pipe and the vertical superconducting large heat pipe. However, the structure is complex and the cost is relatively high.

[0004] Therefore, this solution proposes a heat pipe collector with a turbine device to solve the technical problems that the existing heat pipe collector is prone to scaling and has low heat transfer efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a heat pipe collector with a turbine device, which effectively solves the technical problems that the existing heat pipe collector is prone to scaling and has low heat transfer efficiency. By adding a turbine device to the heat conduction block, on the one hand, driven by the flow pressure of the working medium, the turbine rotates spontaneously, changing the flow field of the surrounding fluid and forming a turbulent effect, which can increase the convective heat transfer effect and thus improve the heat transfer efficiency. On the other hand, as long as the working medium is circulating, the turbine can be in a rotating state, which can weaken the formation of scaling.

[0006] A heat pipe collector with a turbine device includes a double-layer vacuum glass tube, a heat pipe passing through the center of the vacuum glass tube, heat conduction fins arranged inside the vacuum glass tube, and a header pipe connected to one end of the vacuum glass tube and the heat pipe. The heat conduction fins are arranged between the outside of the heat pipe and the inner wall of the vacuum glass tube;

[0007] A sealing ring is arranged at the connection between the vacuum glass tube and the header pipe and they are sealed and connected to each other. A heat conduction block is arranged at the connection between the heat pipe and the header pipe, and a turbine device is arranged on the outside of the heat conduction block.

[0008] The turbine device includes a turbine tube shaft and turbine blades. The inner diameter of the turbine tube shaft is slightly larger than that of the heat conduction block, and the overall outer diameter of the turbine device is smaller than the diameter of the header pipe.

[0009] The turbine device is sleeved on the outer end of the heat conduction block and is inside the header pipe, and the working medium in the header pipe flows through the turbine device.

[0010] The turbine device is rotationally connected to the heat conduction block by ball bearings, so that the turbine device can rotate freely under the flow impact of the working medium in the header pipe.

[0011] The turbine blades are connected to the turbine tube shaft, and one end of the turbine blade is connected to the outside of the turbine tube shaft at an inclined angle. The number of turbine blades is 8 - 20.

[0012] The outer glass tube of the vacuum glass tube is transparent glass, and the inner glass surface is coated with a selective absorption coating.

[0013] The heat pipe includes a condensation end at the upper end, an adiabatic section in the middle, and an evaporation end at the lower end.

[0014] A heat preservation box is arranged on the outside of the header pipe to form a header tank.

[0015] The utility model achieves the following remarkable effects:

[0016] In this solution, a turbine device is arranged outside the heat conduction block. The turbine device is located inside the header pipe. A ball connection is adopted between the turbine device and the heat conduction block, so that the turbine device can rotate freely around the central axis of the heat conduction block. While the working medium in the header pipe is flowing, it can drive the turbine device to rotate, thereby changing the flow form of the surrounding fluid working medium, generating a turbulence effect, increasing the convective heat transfer coefficient, and improving the heat transfer efficiency. At the same time, the turbine device is always in a rotating state, which can weaken the scaling phenomenon when water is used as the working medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front view of the heat pipe collector in the embodiment of the utility model;

[0018] Figure 2 is the three-dimensional device of the heat pipe collector in the embodiment of the utility model Figure 1 ;

[0019] Figure 3 is the three-dimensional device of the heat pipe collector in the embodiment of the utility model Figure 2 ;

[0020] Figure 4 is the schematic diagram of the turbine device in the embodiment of the utility model;

[0021] Figure 5 is the top plan view of the turbine device in the embodiment of the utility model.

[0022] Among them, the reference numerals are: 1, heat pipe; 2, header pipe; 3, heat conduction block; 4, turbine device; 5, vacuum glass tube; 6, heat conduction fin; 7, turbine blade; 8, turbine tube shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to more clearly illustrate the technical features of this solution, the following describes this solution through specific embodiments.

[0024] See Figures 1 - 5 , a heat pipe collector with a turbine device, including a double-layer vacuum glass tube 5, a heat pipe 1 passing through the center of the vacuum glass tube 5, a heat conduction fin 6 arranged inside the vacuum glass tube 5, and a header pipe 2 connected to one end of the vacuum glass tube 5 and the heat pipe 1. The heat conduction fin 6 is arranged between the outside of the heat pipe 1 and the inner wall of the vacuum glass tube 5;

[0025] A sealing ring is arranged at the connection between the vacuum glass tube 5 and the header pipe 2 and they are hermetically connected to each other. A heat conduction block 3 is arranged at the connection between the heat pipe 1 and the header pipe 2, and a turbine device 4 is arranged outside the heat conduction block 3.

[0026] The working principles of the vacuum glass tube 5, heat pipe 1, heat conducting fins 6, and header 2 are prior arts in the field. For specific references, please refer to the description of the background art and will not be elaborated here.

[0027] The turbine device 4 includes a turbine tube shaft 8 and turbine blades 7. The inner diameter of the turbine tube shaft 8 is slightly larger than that of the heat conducting block 3, and the overall outer diameter of the turbine device 4 is smaller than the diameter of the header 2.

[0028] The turbine device 4 is sleeved on the outer end of the heat conducting block 3 and is located inside the header 2. The working medium inside the header 2 flows through the turbine device 4.

[0029] The turbine device 4 is rotationally connected to the heat conducting block 3 by ball bearings, preferably by ball bearings, so that the turbine device 4 can rotate freely under the flow impact of the working medium inside the header 2.

[0030] The turbine blades 7 are connected to the turbine tube shaft 8. One end of the turbine blade 7 is connected to the outside of the turbine tube shaft 8 at an inclined angle, and the number of turbine blades 7 is 8 - 20.

[0031] The outer glass tube of the vacuum glass tube 5 is a transparent glass, and the inner glass surface is coated with a selective absorption coating.

[0032] The heat pipe 1 includes a condensation end at the upper end, a heat insulation section in the middle, and an evaporation end at the lower end.

[0033] A heat preservation box is arranged on the outside of the header 2 to form a header tank.

[0034] The working principle of the present utility model: Since the fluid working medium at the position of the heat conducting block inside the header is generally in a laminar flow state, the heat transfer efficiency here is relatively low, and when the working medium is water, scale is likely to form. This solution does not require large-scale modification of the existing heat pipe collector. Only a turbine device needs to be installed on the heat conducting block inside the header. The turbine device will rotate spontaneously under the impact of the flowing working medium, thereby changing the flow field structure at this place, so as to improve the heat transfer efficiency and reduce scale formation.

[0035] The technical features not described in the present utility model can be realized by or adopt prior arts and will not be elaborated here. Of course, the above description is not a limitation to the present utility model, and the present utility model is not limited to the above examples. Changes, modifications, additions, or substitutions made by those of ordinary skill in the art within the essence scope of the present utility model should also belong to the protection scope of the present utility model.

Claims

1. A heat pipe collector with a turbine device, characterized in that: It comprises a double-layer vacuum glass tube, a heat pipe passing through the center of the vacuum glass tube, a heat-conducting fin arranged inside the vacuum glass tube, and a header connected to the vacuum glass tube and one end of the heat pipe, wherein the heat-conducting fin is arranged between the outer side of the heat pipe and the inner wall of the vacuum glass tube; A sealing ring is provided at the connection between the vacuum glass tube and the connecting pipe, and the two are sealed and connected to each other. A heat conduction block is provided at the connection between the heat pipe and the connecting pipe, and a turbine device is provided on the outside of the heat conduction block.

2. The heat pipe collector with turbine device according to claim 1, characterized in that: The turbine device comprises a turbine shaft and turbine blades. The inner diameter of the turbine shaft is larger than the heat conducting block. The overall outer diameter of the turbine device is smaller than the diameter of the header pipe.

3. The heat pipe collector with turbine device according to claim 1, characterized in that: The turbine device is sleeved on the outer end of the heat conducting block and is located in the connecting pipe. The working medium in the connecting pipe flows through the turbine device.

4. The heat pipe collector with turbine device according to claim 1, characterized in that: The turbine device is rotatably connected to the heat conducting block by means of balls, so that the turbine device can rotate freely under the flow impact of the working medium in the header.

5. The heat pipe collector with turbine device according to claim 2, characterized in that: The turbine blades are connected to the turbine tube shaft, one end of the turbine blades is connected to the outer side of the turbine tube shaft at an inclined angle, and the number of the turbine blades is 8-20.

6. The heat pipe collector with turbine device according to claim 1, characterized in that: The outer glass tube of the vacuum glass tube is transparent glass, and the surface of the inner glass is coated with a selective absorption coating.

7. The heat pipe collector with turbine device according to claim 1, characterized in that: The heat pipe comprises a condensation end at the upper end, a heat insulation section in the middle and an evaporation end at the lower end.

8. The heat pipe collector with turbine device according to claim 1, characterized in that: A heat preservation box is arranged on the outer side of the connecting pipe to form a connecting box.

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