CN210512198U - Fixed non-rotating slot type light-gathering and heat-collecting device with heat absorption tubes - Google Patents

Abstract

The utility model relates to the technical field of solar power generation, and discloses a fixed and non-rotating groove type light-gathering and heat-collecting device of a heat-absorbing pipe, which comprises the heat-absorbing pipe, a main light-gathering component, an afterglow reflection component and a gear transmission system, wherein the main light-gathering component, the afterglow reflection component and the gear transmission system are matched with the heat-absorbing pipe for gathering and heating; the heat absorption pipe of the utility model does not need to rotate during working, and a rotary joint is not needed between the heat absorption pipe and the heat transfer working medium pipeline, so that on one hand, the equipment cost can be reduced, and on the other hand, the risk of leakage caused by untight sealing of the rotary joint is avoided; the change value of the rotating angle of the reflector is small, the torque of the driving motor is reduced, and the control precision is obviously improved; the utility model discloses the opening size of speculum is bigger, and the spotlight multiple is higher, and the absorption heat energy of thermal-collecting tube is more, and is also more reliable when using the fused salt as heat transfer working medium, and the space between different focus parabolas can effectively reduce the windage moreover, improves the anti-wind ability of system.

Description

Fixed non-rotating slot type light-gathering and heat-collecting device with heat absorption tubes

Technical Field

The utility model relates to a solar energy power generation technical field specifically is a fixed not pivoted slot type spotlight heat collection device of heat-absorbing pipe.

Background

At present, the solar thermal power generation technology in China is developed rapidly, and various technical routes are promoted simultaneously. The trough type solar thermal power generation system is mature in technology, and the trough type solar thermal power generation stations established internationally are the most. The trough type solar thermal power generation system is developing towards a large-opening light-gathering heat-collecting trough, high working temperature and molten salt heat-conducting working medium. According to the light-gathering and heat-collecting device of the conventional groove type solar thermal power generation system, a heat-absorbing pipe and a reflector bracket are fixed together, and when the system works, the heat-absorbing pipe rotates along with the reflector bracket under the driving of a rotating shaft, so that a rotary joint must be installed between the heat-absorbing pipe and a hot working medium transmission main pipe, the rotary joint is very expensive, and the leakage risk exists after the system is used for a period of time. In addition, as the opening of the light-gathering and heat-collecting slot is larger and larger, the power requirement for driving the light-gathering and heat-collecting device is higher and higher, thereby limiting the size of the opening of the heat-collecting slot from further expanding.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to above-mentioned background art, the utility model provides a fixed not pivoted slot type spotlight heat collection device of heat-absorbing pipe possesses advantages such as need not rotary joint, driving motor torque and reduces and spotlight heat-collecting groove's opening size can further enlarge, has solved the problem that above-mentioned background art provided.

The utility model provides a following technical scheme: a groove-type light-gathering heat-collecting device with fixed and non-rotating heat-absorbing tubes,

comprises a heat absorption pipe and a pipeline for heating and conveying heat transfer medium;

the main light condensation component is used for carrying out primary condensation on the direct solar radiation light and reflecting the direct solar radiation light to the heat absorption pipe;

the residual light reflection assembly is used for carrying out secondary collection and reflection on the solar radiation reflected to the outside of the heat absorption pipe to the heat absorption pipe;

the gear transmission system mechanically drives the main light-gathering component according to the change of the solar altitude angle, so that the light-gathering reflection efficiency is maximized;

the main light-gathering component, the residual light reflection component and the gear transmission system are matched together to perform light-gathering heating on the heat absorption pipe.

Preferably, the main light gathering assembly comprises a reflector I and a reflector bracket, the reflector I is fixed on the reflector bracket, the reflector bracket is movably mounted on the guide rail and can move relative to the guide rail, and the reflector bracket and the guide rail are driven by a gear transmission system.

Preferably, the residual light reflection assembly is composed of reflectors II fixed on the heat absorption tubes, the reflectors II are installed above the heat absorption tubes in an inclined mode, the number, the width and the positions of the reflectors II can be correspondingly arranged according to the models of the reflectors I, two ends of each heat absorption tube are communicated with heat transfer working medium pipelines, and the heat transfer working medium pipelines are erected on two heat absorption tube supporting columns fixed on the ground.

Preferably, the gear transmission system comprises a driving gear installed on the reflector bracket and a rack installed on a guide rail, the guide rail is fixed on the guide rail bracket, the track surface of the guide rail is arc-shaped, and the circle center of the arc-shaped track surface is on the central line of the heat absorption pipe.

Preferably, the reflector I is composed of two or more paraboloids with different focal lengths, and the focal line collection points of all the paraboloids are positioned on the heat absorption pipe.

The utility model discloses possess following beneficial effect:

the utility model discloses the heat absorption pipe is separated with the speculum, and the heat absorption pipe need not to rotate during operation, no longer needs the rotary joint between heat absorption pipe and the heat transfer working medium pipeline, can reduce equipment cost on the one hand, has avoided the rotary joint to lead to the risk of leaking because of sealed not tight on the other hand too; the gear transmission system of the utility model has the advantages that when the motor rotates to drive the driving gear to rotate for one circle, the change value of the rotating angle of the reflecting mirror is smaller, the torque of the driving motor is reduced, and the control precision is obviously improved; the utility model discloses the speculum adopts two or more different focal length paraboloids to splice and forms, and the opening size of speculum is bigger, and the spotlight multiple is higher, and the heat collecting tube absorbs heat energy more, also more reliable when using the fused salt as heat transfer working medium, and the space between the different focal length paraboloids can effectively reduce the windage, improves system's anti-wind ability; the utility model discloses simple structure, it is with low costs, be fit for extensive popularization and application.

Drawings

Fig. 1 is a side view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a partial schematic view of the engagement between the driving gear and the rack of the present invention;

fig. 4 is an enlarged view of a portion a of fig. 1 according to the present invention.

In the figure: 1. a reflector I; 2. a mirror support; 3. a guide rail; 4. a rail bracket; 5. a heat absorbing tube; 6. a heat absorbing pipe support; 7. a mirror II; 8. a heat transfer working medium conduit; 9. a drive gear; 10. a rack rail.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a trough-type light-gathering and heat-collecting device with a fixed and non-rotatable heat-absorbing tube,

comprises a heat absorption pipe 5, a pipeline for heating and conveying heat transfer working medium;

the main light condensation component is used for carrying out primary condensation on the direct solar radiation light and reflecting the direct solar radiation light to the heat absorption pipe 5;

the residual light reflection assembly is used for carrying out secondary collection and reflection on the solar radiation reflected to the outside of the heat absorption pipe 5 to the heat absorption pipe 5;

the gear transmission system mechanically drives the main light-gathering component according to the change of the solar altitude angle, so that the light-gathering reflection efficiency is maximized;

the main light-gathering component, the residual light reflection component and the gear transmission system are matched together to perform light-gathering heating on the heat absorption pipe 5.

The main light-gathering component comprises a reflector I1 and a reflector bracket 2, wherein the reflector I1 is fixed on the reflector bracket 2, the reflector bracket 2 is movably arranged on the guide rail 3 and can move relative to the guide rail 3, and the reflector bracket 2 and the guide rail 3 are driven by a gear transmission system;

the waste light reflection assembly consists of a reflector II7 fixed on a heat absorption tube 5, a reflector II7 is installed above the heat absorption tube 5 in an inclined mode and is back to the incident direction of sunlight and used for reflecting part of solar radiation reflected outside the heat absorption tube 5 to the heat absorption tube 5 again, the reflector II7 is used for fully utilizing the solar radiation with reflection loss again, the heating effect of the heat absorption tube 5 is improved, the number, the width and the position of the reflectors II7 can be correspondingly arranged according to the model of the reflector I1, two ends of the heat absorption tube 5 are communicated with heat transfer working medium pipelines 8, the heat transfer working medium pipelines 8 are erected on two heat absorption tube supports 6 fixed on the ground, low-temperature heat transfer working media flow in from the heat transfer working medium pipeline 8 at one end, and flow out from the heat transfer working medium pipeline 8 at the other end after heat energy is absorbed in the heat absorption tube 5;

the gear transmission system comprises a driving gear 9 arranged on the reflector bracket 2 and a toothed rail 10 arranged on the guide rail 3, wherein the driving gear 9 is driven by a stepping motor or a linear direct current motor to rotate, the reflector I1 and the reflector bracket 2 move relative to the guide rail 3 through the gear transmission system, the light-gathering reflection angle of the reflector I1 is adjusted, the guide rail 3 is fixed on the guide rail bracket 4, the track surface of the guide rail 3 is arc-shaped, the circle center of the arc-shaped track surface is positioned on the central line of the heat absorption tube 5, and when the reflector I1 moves relative to the guide rail 3, the position of the parabolic focal line of the reflector I1 on the central line of the heat absorption tube 5 is ensured to be unchanged;

the reflector I1 is composed of two or more paraboloids with different focal lengths, and focal line collection points of all the paraboloids are positioned on the heat absorption pipe 5 to heat the heat transfer working medium on the heat absorption pipe 5.

The groove type light-gathering and heat-collecting device is arranged in the east-west direction, the mirror surface of the reflector I1 faces south, and when the heat-absorbing pipe 5 is positioned above the south side of the reflector I1 in a northern hemisphere.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a fixed not pivoted slot type spotlight heat collection device of heat-absorbing pipe which characterized in that:

comprises a heat absorption pipe (5) and a pipeline for heating and conveying heat transfer medium;

the main light condensation component is used for carrying out primary condensation on the direct solar radiation light and reflecting the direct solar radiation light to the heat absorption pipe (5);

the residual light reflection assembly is used for carrying out secondary collection and reflection on the solar radiation reflected to the outside of the heat absorption pipe (5) to the heat absorption pipe (5);

the gear transmission system mechanically drives the main light-gathering component according to the change of the solar altitude angle, so that the light-gathering reflection efficiency is maximized;

the main light-gathering component, the residual light reflection component and the gear transmission system are matched together to perform light-gathering heating on the heat-absorbing pipe (5).

2. The trough type light-concentrating and heat-collecting device with fixed and non-rotating heat absorbing pipes as claimed in claim 1, wherein: the main light condensation assembly comprises a reflector I (1) and a reflector support (2), the reflector I (1) is fixed on the reflector support (2), the reflector support (2) is movably mounted on the guide rail (3) and can move relative to the guide rail (3), and the reflector support (2) and the guide rail (3) are driven through a gear transmission system.

3. The trough type light-concentrating and heat-collecting device with fixed and non-rotating heat absorbing pipes as claimed in claim 1, wherein: the waste light reflection assembly is composed of reflectors II (7) fixed on a heat absorption pipe (5), the reflectors II (7) are installed above the heat absorption pipe (5) in an inclined mode, the number, the width and the positions of the reflectors II (7) can be correspondingly arranged according to the model of a reflector I (1), two ends of the heat absorption pipe (5) are communicated with heat transfer working medium pipelines (8), and the heat transfer working medium pipelines (8) are erected on two heat absorption pipe supporting columns (6) fixed on the ground.

4. The trough type light-concentrating and heat-collecting device with fixed and non-rotating heat absorbing pipes as claimed in claim 1, wherein: the gear transmission system comprises a driving gear (9) arranged on the reflector bracket (2) and a gear track (10) arranged on the guide rail (3), the guide rail (3) is fixed on the guide rail bracket (4), the track surface of the guide rail (3) is arc-shaped, and the circle center of the arc-shaped track surface is positioned on the central line of the heat absorption pipe (5).

5. The trough type light-concentrating and heat-collecting device with fixed and non-rotating heat absorbing pipes as claimed in claim 2, wherein: the reflector I (1) is composed of two or more paraboloids with different focal lengths, and focal line collection points of all the paraboloids are positioned on the heat absorption pipe (5).

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