CN115823755A

CN115823755A - Cavity type particle heat absorber

Info

Publication number: CN115823755A
Application number: CN202111647423.9A
Authority: CN
Inventors: 俞明锋; 章晓敏; 宓霄凌; 王伊娜; 周楷; 朱晓林
Original assignee: Zhejiang Cosin Solar CSP Technology Research Institute Co Ltd
Current assignee: Zhejiang Cosin Solar CSP Technology Research Institute Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2023-03-21

Abstract

The application provides a cavate particle heat absorber, including: the heat absorber comprises a heat absorption cavity surrounded by a heat absorber shell, and a particle channel for particles to pass through is arranged in the heat absorption cavity; and a light-transmitting inclined plate inclined in the same direction is arranged on one side of the particle channel. The cavity type particle heat absorber provided by the invention enables particles to be in a stacking flow state, and reduces the influence of external wind or air convection in a heat absorption cavity on the heat absorption of the particles while ensuring the controllability of the heat absorption process of the particles.

Description

Cavity type particle heat absorber

Technical Field

The invention belongs to the technical field of solar thermal power generation, and particularly relates to a cavity type particle heat absorber.

Background

The free-falling heat absorber is one of the mainstream particle heat absorbers at present, and the main principle is that particles fall freely to form a particle curtain, and sunlight is directly focused on the particle curtain.

However, the free-falling particles are in a free-falling state in the heat absorption cavity, the heat absorption process is uncontrollable, and the particles are very easily influenced by external wind, so that the particles are easily blown out by wind or the shape of the curtain is deformed, and the heat absorption effect is influenced.

Disclosure of Invention

Based on the problems, the invention provides a cavity type particle heat absorber, which can reduce the influence of external wind on the heat absorption of particles while ensuring the controllability of the heat absorption process of the particles.

In order to achieve the above object, the present application provides a cavity type particle heat absorber, which includes a heat absorption cavity surrounded by a heat absorber housing, wherein a particle channel for passing particles is arranged in the heat absorption cavity;

and a light-transmitting inclined plate inclined in the same direction is arranged on one side of the particle channel.

In one possible implementation manner, a region partition board for dividing the particle channel into a plurality of regions is arranged in the particle channel, and the light-transmitting inclined board is arranged on the region partition board.

In one possible implementation, the heat sink comprises two heat absorption ports, and the two heat absorption ports are arranged on opposite sides of the heat sink.

In one possible implementation manner, the heat absorber further includes a particle regulating valve, and the particle regulating valve is fixedly arranged at a particle outlet of the heat absorbing cavity.

In one possible embodiment, a particle control valve is provided for each of the regions into which the region divider is divided.

In one possible implementation manner, a heat absorber partition is arranged in the heat absorption cavity, and the heat absorption ports are respectively located on two sides of the heat absorber partition.

In one possible implementation, a particle collection device is arranged at the particle outlet of the heat absorption cavity.

Due to the application of the technical scheme, compared with the prior art, the invention has the following beneficial effects:

1. the application provides a cavate granule heat absorber, owing to set up the printing opacity swash plate in the heat absorption chamber for the granule becomes in the free fall process and piles up the flow, and the printing opacity swash plate has also played the effect of deep bead simultaneously, has reduced the influence that external wind and heat absorption intracavity air convection produced to the granule flows, reduces the influence to the heat absorption process.

2. The existence of the light-transmitting inclined plate also strengthens disturbance in the falling process of the particles and enhances the integral heat absorption capacity of the particles. Meanwhile, the heat absorber can reach higher heat absorption temperature, and can also ensure that the temperature of the particles is relatively uniform, so that the heat absorption process of the particles is stable and controllable.

3. The heat absorption area is divided by the area partition plate, and each outlet is provided with a particle regulating valve, so that the falling speed of each divided area particle can be independently controlled, and the particles can reach the heat absorption temperature when the energy flow density distribution is uneven, and the temperature is even.

4. Set up a plurality of heat absorption mouths, can receive bigger scale mirror field reflection energy, the heat absorption region that every heat absorption mouth corresponds simultaneously adopts the heat absorber baffle to cut apart, and the granule of baffle both sides can the interconversion at the in-process that falls, has further guaranteed the homogeneity of granule temperature.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of a cavity type particle heat absorber in an embodiment of the invention;

fig. 2 is a schematic cross-sectional view of a heat absorption cavity of a cavity type particle heat absorber according to an embodiment of the present invention.

Reference numbers:

1-a heat absorber housing; 2-a heat absorption port; 3-a heat absorber separator; 4-a light-transmitting sloping plate; 5-a zone separator; 6-granules; 7-a particle collection device; 8-particle regulating valve; 9-particle inlet.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will aid those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any manner. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the invention.

The application provides a cavate particle heat absorber, the heat absorber includes: the heat absorber comprises a heat absorption cavity defined by a heat absorber shell, and a particle channel for particles to pass through is arranged in the heat absorption cavity; and a light-transmitting inclined plate inclined in the same direction is arranged on one side of the particle channel.

The application provides a cavate granule heat absorber, owing to set up the printing opacity swash plate in the heat absorption chamber for the granule becomes in the free fall process and piles up the flow, and the printing opacity swash plate has also played the effect of deep bead simultaneously, has reduced the influence that external wind and heat absorption intracavity air convection produced to the granule flows, reduces the influence to the heat absorption process.

As shown in fig. 1 and fig. 2, the present invention provides a cavity type particle heat absorber, which includes a heat absorber casing 1, a heat absorption cavity is arranged inside the heat absorber casing, and a heat absorber partition 3 for dividing the heat absorption cavity is arranged in the heat absorption cavity; a particle channel for passing the particles 6 is arranged in the heat absorption cavity, a light-transmitting inclined plate 4 inclined along the same direction is arranged on one side of the particle channel, and the light-transmitting inclined plate 4 is used for generating a stacking effect on the particles 6 flowing through.

The particle channel is provided with a regional partition plate 5 for dividing the particle channel into a plurality of regions, and the light-transmitting inclined plate 4 is arranged on the regional partition plate 5.

The zone partition plates 5 divide the heat absorption zone of the particles into a plurality of zones and respectively correspond to the particle regulating valves 8, so that the zone control of heat absorption of the particles 6 is realized, and the temperature unevenness caused by uneven solar radiation energy flux density is prevented. The falling speed of the particles 6 in the central area with high energy flow density is high, and the falling speed of the particles 6 in the two side areas with low energy flow density is low, so that the temperature of the hot particles at the outlet of the heat absorber is ensured to be uniform.

The particles 6 enter the heat absorber from the particle inlet 9, the light-transmitting inclined plate 4 prevents the particles 6 from disordered movement, and the particles 6 are enabled to present accumulation flow in the falling process by the light-transmitting inclined plate, so that the heat absorbing process is relatively controllable.

The accumulated flow can effectively reduce the influence of external wind on the flowing of the particles 6, and the light-transmitting inclined plate 4 can also play a role of a wind shield to prevent the influence of air vortex or external wind generated in the heat absorption cavity on the flowing of the particles 6.

The light-transmitting sloping plate 4 has high light transmittance, and the particles 6 directly absorb the solar energy transmitted from the light-transmitting sloping plate 4, thereby absorbing heat and raising the temperature. In addition, the existence of the light-transmitting inclined plate can also effectively enhance the disturbance in the falling process of the particles 6, and the heat absorption capacity and the uniformity of the heat absorption temperature of the particles 6 are enhanced.

The heat absorber is also provided with a heat absorber clapboard 3 used for dividing the heat absorption cavity, and the heat absorber clapboard 3 is fixedly connected with the area clapboard 5. The heat absorber baffle 3 can divide into two heat absorption chambeies with the heat absorber, and every heat absorption chamber corresponds one heat absorption mouth 2 respectively, and two heat absorption mouths set up the different sides at the heat absorber. The absorber baffle 3 prevents cross-ventilation from forming in the absorber chamber, which affects the motion trajectory of the particles 6.

Because the solar radiation energy that every heat absorption mouth 2 corresponds is different, for guaranteeing that the temperature of all granules 6 of heat absorber export 2 is even, except adopting the velocity of flow of governing valve control each regional granule 6, the granule of heat absorber baffle 3 both sides also can be through the indirect heat transfer of heat absorber baffle 3 in the whereabouts in-process, guarantees the homogeneity of the temperature of granule 6.

The inventive concept is explained in detail herein using specific examples, which are given only to aid in understanding the core concepts of the invention. It should be understood that any obvious modifications, equivalents and other improvements made by those skilled in the art without departing from the spirit of the present invention are included in the scope of the present invention.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

It should be understood that reference to "a plurality" herein means two or more. "and/or" describes the association relationship of the associated object, indicating that there may be three relationships, for example, a and/or B, which may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cavity type particle heat absorber is characterized by comprising a heat absorption cavity defined by a heat absorber shell, wherein a particle channel for particles to pass through is arranged in the heat absorption cavity;

2. The cavity type particle heat absorber as claimed in claim 1, wherein the particle channel is provided with a region partition board for dividing the particle channel into a plurality of regions, and the light-transmitting inclined plate is arranged on the region partition board.

3. The particulate heat sink of claim 1 wherein the heat sink includes two heat absorption ports disposed on opposite sides of the heat sink.

4. The chambered particle heat sink of claim 1, further comprising a particle regulating valve fixedly disposed at a particle outlet of the heat sink chamber.

5. The particulate heat sink of claim 2 wherein each zone into which the zone divider is divided is provided with a particulate conditioning valve.

6. The cavity type particle heat absorber as claimed in claim 2, wherein the heat absorbing cavity is provided with a heat absorber partition, and the heat absorbing ports are respectively located on two sides of the heat absorber partition.

7. A particulate heat absorber as claimed in any one of claims 1 to 4 wherein a particulate collection means is provided at the particulate outlet of the heat absorber chamber.