CN113310226A

CN113310226A - Dish type solar concentrator focusing heating cavity

Info

Publication number: CN113310226A
Application number: CN202110440737.5A
Authority: CN
Inventors: 冯伟伟
Original assignee: Binzhou University
Current assignee: Binzhou University
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2021-08-27

Abstract

The invention provides a focusing heating cavity of a disc type solar concentrator, and mainly relates to the field of solar energy utilization. The utility model provides a dish formula solar concentrator focus heating chamber, includes arc support and shell, set up feed liquor pipe and drain pipe on the arc support, the shell is spindle form, the shell both sides set up inlet and liquid outlet respectively, the shell internal rotation sets up the impeller, the axis of feed liquor pipe and drain pipe perpendicular to impeller, the shell bottom sets up the heating surface, the shell outside sets up the heat preservation shell, the heat preservation shell does not cover the heating surface. The invention has the beneficial effects that: the invention increases the disturbance mechanism in the heating cavity, improves the medium circulation rate in the heating cavity, and improves the heat circulation capacity, thereby improving the overall energy conversion efficiency of the disc type solar condenser.

Description

Dish type solar concentrator focusing heating cavity

Technical Field

The invention mainly relates to the field of solar energy utilization, in particular to a focusing heating cavity of a disc type solar concentrator.

Background

The dish type solar condenser is a solar photo-thermal utilization device, and can collect solar rays, so that the sunlight is focused to heat a heating cavity, and the solar energy is converted into heat energy. Wherein, the focusing heating cavity is filled with a circulating medium, and the circulating medium transmits heat to the collecting device through a circulating pipeline for heat exchange.

In the current products, the solar focusing heating chamber is only a thickened delivery conduit, which only functions to slow the flow rate of the medium therein to achieve the requirement of absorbing heat energy. However, in the heating process, due to the change of the volume of the heating cavity, the fluidity of the heated medium at the bottom is poor, and heat cannot be well transferred to the top, which causes the overall energy conversion efficiency of the disc-type solar concentrator to be affected.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides the focusing heating cavity of the disc type solar concentrator, which is additionally provided with a disturbance mechanism in the heating cavity, improves the medium circulation rate in the heating cavity, and improves the heat circulation capacity, thereby improving the integral energy conversion efficiency of the disc type solar concentrator.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the utility model provides a dish formula solar concentrator focus heating chamber, includes arc support and shell, set up feed liquor pipe and drain pipe on the arc support, the shell is spindle form, the shell both sides set up inlet and liquid outlet respectively, the feed liquor pipe is connected with the inlet, the drain pipe is connected with the liquid outlet, the shell internal rotation sets up the impeller, the axis of feed liquor pipe and drain pipe perpendicular to impeller, the shell bottom sets up the heating surface, the shell outside sets up the heat preservation shell, the heat preservation shell does not cover the heating surface.

Arc grooves are formed in two sides of the arc support, heat preservation layers are filled in the arc grooves, the liquid inlet pipe and the liquid outlet pipe are located in the two arc grooves respectively, and the heat preservation layers wrap the liquid inlet pipe and the liquid outlet pipe.

The bottom surface of the cylinder shell is provided with a ring wall, and the ring wall surrounds the edge of the heating surface.

The heating surface is arranged in the cylinder shell, and a plurality of raised heat dissipation plates are arranged on one surface of the heating surface, and the heat dissipation plates do not interfere with the impeller.

The liquid inlet and the liquid outlet are different in height, the liquid inlet is higher than the liquid outlet, and the impeller is located between the liquid inlet and the liquid outlet.

The impeller is in a spindle shape consistent with the shape of the cylinder shell.

The liquid inlet pipe and the liquid outlet pipe are brass pipes.

The heating surface is a frosted surface.

Compared with the prior art, the invention has the beneficial effects that:

the cylinder shell is connected to a bracket of the disc type solar condenser through an arc bracket, and the cylinder shell is arranged at a focusing point of the disc type solar condenser. The impeller is rotatably installed in the cylinder shell, a liquid inlet pipe and a liquid outlet pipe are connected to two ends of the cylinder shell, the liquid inlet pipe and the liquid outlet pipe are respectively responsible for leading-in and leading-out of a medium, and the impeller can rotate in the cylinder shell under the pushing of the medium. Along with the rotation of impeller, can stir the medium in the shell, the medium that makes bottom heated portion in the shell can be faster mixes with the top medium to accelerate the heat transfer of medium, improve the holistic energy conversion efficiency of dish formula solar concentrator.

Drawings

FIG. 1 is a reference diagram illustrating the use of the present invention;

FIG. 2 is a schematic structural diagram of the present invention in a top view;

FIG. 3 is a schematic structural view of the cartridge housing of the present invention in a bottom view;

fig. 4 is a schematic structural view of a cross-sectional view of a cartridge housing according to the present invention.

Reference numerals shown in the drawings: 1. an arc-shaped bracket; 2. a cartridge housing; 3. a dish-type solar concentrator; 11. a liquid inlet pipe; 12. a liquid outlet pipe; 13. an arc groove; 14. a heat-insulating layer; 21. an impeller; 22. heating the surface; 23. a heat preservation shell; 24. an annular wall; 25. a heat sink.

Detailed Description

The invention is further described with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.

As shown in fig. 1 to 4, the focusing heating cavity of a disc-type solar concentrator according to the present invention includes an arc-shaped support 1 and a cylindrical shell 2, wherein the arc-shaped support 1 extends to the back of the disc-type solar concentrator and is connected to the frame body of the disc-type solar concentrator, and the cylindrical shell 2 is installed at the end of the arc-shaped support 1, such that the bottom of the cylindrical shell 2 is located at the focusing position of the disc-type solar concentrator. Arc support 1 goes up to paste and sets up feed liquor pipe 11 and drain pipe 12, feed liquor pipe 11, drain pipe 12 are the brass pipe. The other ends of the liquid inlet pipe 11 and the liquid outlet pipe 12 are connected to the heat exchanger, wherein the liquid inlet pipe 11 and the liquid outlet pipe 12 are made of brass pipes, and the outside of the pipes is wrapped with a heat insulation layer. The barrel casing 2 is spindle-shaped, and a liquid inlet and a liquid outlet are respectively arranged on two sides of the barrel casing 2. The liquid inlet and the liquid outlet are respectively arranged at two sides of the spindle-shaped cylinder shell 2, and the spindle-shaped shape can greatly expand the volume of the cylinder shell 2, so that the medium entering the cylinder shell is decelerated and fully heated. Meanwhile, the spindle-shaped barrel shell 2 can allow a disturbance mechanism to be installed, so that media in the mechanism are mixed by external force, and the heat exchange capacity between the media is improved.

The liquid inlet pipe 11 is connected with a liquid inlet, the liquid outlet pipe 12 is connected with a liquid outlet, an impeller 21 is rotatably mounted in the cylinder shell 2, and the impeller 21 serves as a disturbance mechanism. Specifically, the liquid inlet pipe 11 and the liquid outlet pipe 12 are perpendicular to the axis of the impeller 21, the liquid inlet is not at the same height as the liquid outlet, the liquid inlet is higher than the liquid outlet, and the impeller 21 is located between the liquid inlet and the liquid outlet. The cartridge housing 2 has a heating surface 22 at the bottom. Through the difference in height setting mode between inlet and the liquid outlet for the medium need flow in the shell 2 oblique below, in-process medium that flows will drive impeller 21 and rotate, will disturb the medium in the shell 2 along with impeller 21's rotation, make the bottom by the medium of heating part and the medium at top carry out intensive mixing, thereby reduce the average temperature of bottom medium, improve the difference in temperature between bottom medium and the heating surface, make the energy-absorbing effect of medium better. Thereby accelerating the heat transfer of the medium and improving the heat conversion efficiency of the device.

Specifically, the impeller 21 is in a spindle shape conforming to the shape of the cartridge case 2, so that the impeller 21 can conform to the shape of the inner cavity of the cartridge case 2, thereby sufficiently stirring the medium in the cartridge case 2.

Specifically, in order to ensure the heat preservation performance of the cartridge housing 2, the exterior of the cartridge housing 2 is tightly attached to an asbestos heat preservation housing 23, and the heat preservation housing 23 does not cover the heating surface 22. The heating surface is a circular plane and is prepared by a frosted process, so that the heating surface is not reflective. The heating surface 22 is a focusing surface of a dish solar concentrator, and the medium in the cylindrical case 2 can be heat-exchanged by heating the heating surface 22 by focusing sunlight on the heating surface 22.

Further, arc grooves 13 are integrally formed in two sides of the arc support 1, heat insulation layers 14 are filled in the arc grooves 13, the liquid inlet pipe 11 and the liquid outlet pipe 12 are respectively located in the two arc grooves 13, and the heat insulation layers 14 wrap the liquid inlet pipe 11 and the liquid outlet pipe 12. Through the heat preservation setting to feed liquor pipe 11 and drain pipe 12 for the medium in it can reduce calorific loss, thereby improves the thermal efficiency of this device. Furthermore, the heating surface 22 is positioned in the cylinder shell 2, and a plurality of convex heat dissipation plates 25 can be welded or integrally formed on one surface of the heating surface, wherein the heat dissipation plates 25 do not interfere with the impeller 21. The heat dissipation plate 25 increases the interaction area with the medium, thereby improving the heating efficiency of the device to the medium.

Further, the bottom surface of the cartridge shell 2 is welded with a ring wall 24, and the ring wall 24 surrounds the outer edge of the heating surface 22. The annular wall 24 serves as a protection for the periphery of the heating surface 22, so that the heat flow at the heating surface 22 can be prevented from being taken away by wind force, and the effect of reducing heat loss is achieved.

Claims

1. The utility model provides a dish formula solar concentrator focus heating chamber, includes arc support (1) and cartridge case (2), its characterized in that: set up feed liquor pipe (11) and drain pipe (12) on arc support (1), cartridge shell (2) are the spindle form, cartridge shell (2) both sides set up inlet and liquid outlet respectively, feed liquor pipe (11) are connected with the inlet, drain pipe (12) are connected with the liquid outlet, cartridge shell (2) internal rotation sets up impeller (21), the axis of feed liquor pipe (11) and drain pipe (12) perpendicular to impeller (21), cartridge shell (2) bottom sets up heating surface (22), cartridge shell (2) outside sets up heat preservation shell (23), heat preservation shell (23) do not cover heating surface (22).

2. The dish solar concentrator focusing heating chamber of claim 1, wherein: arc grooves (13) are formed in two sides of the arc-shaped support (1), heat-insulating layers (14) are filled in the arc grooves (13), the liquid inlet pipe (11) and the liquid outlet pipe (12) are respectively located in the two arc grooves (13), and the liquid inlet pipe (11) and the liquid outlet pipe (12) are wrapped by the heat-insulating layers (14).

3. The dish solar concentrator focusing heating chamber of claim 1, wherein: the bottom surface of the cylinder shell (2) is provided with a ring wall (24), and the ring wall (24) is surrounded at the outer edge of the heating surface (22).

4. The dish solar concentrator focusing heating chamber of claim 1, wherein: the heating surface (22) is positioned in the cylinder shell (2), one surface of the heating surface is provided with a plurality of convex heat dissipation plates (25), and the heat dissipation plates (25) do not interfere with the impeller (21).

5. The dish solar concentrator focusing heating chamber of claim 1, wherein: the liquid inlet and the liquid outlet are different in height, the liquid inlet is higher than the liquid outlet, and the impeller (21) is located between the liquid inlet and the liquid outlet.

6. The dish solar concentrator focusing heating chamber of claim 1, wherein: the impeller (21) is in a spindle shape consistent with the shape of the cylinder shell (2).

7. The dish solar concentrator focusing heating chamber of claim 1, wherein: the liquid inlet pipe (11) and the liquid outlet pipe (12) are brass pipes.

8. The dish solar concentrator focusing heating chamber of claim 1, wherein: the heating surface (22) is a frosted surface.