CN210351066U

CN210351066U - Sunlight tracking device of trough type solar power generation system

Info

Publication number: CN210351066U
Application number: CN201921648514.2U
Authority: CN
Inventors: 何开浩
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-04-17
Anticipated expiration: 2029-09-29

Abstract

The utility model relates to a slot type solar electric system's sunlight tracking means, including the slot type spotlight ware, the thermal-collecting tube, the sunlight tracker includes transparent glass board and the first reflector layer that is parallel to each other, the second reflector layer, first reflector layer is located on the last wall of transparent glass board and is arranged down, the second reflector layer is located on the lower wall of transparent glass board and is arranged up, it has the hole that can supply the light to pass to open on the first reflector layer, the pivot axis is β with the plane at thermal-collecting tube axis place, the transparent glass board, first reflector layer, the equal perpendicular plane β of second reflector layer arranges, as long as plane α that the light of multiple reflection constitutes is basically parallel with plane β between first reflector layer and second reflector layer, just can make slot type spotlight ware focus position accuracy, the restriction of installation direction to slot type solar electric system has been cancelled, the installation of being convenient for, and be convenient for adjust in real time the slot type spotlight ware angle and make it keep focusing accurate, be favorable to improving the electricity generation effect.

Description

Sunlight tracking device of trough type solar power generation system

Technical Field

The utility model relates to a solar energy power generation field specifically indicates a slot type solar electric system's sunlight tracking means.

Background

Solar energy is an energy source with low distribution density and intermittent and spatial distribution which change all the time, and is greatly different from the conventional energy sources familiar to people in life, so that higher requirements are put on the collection and utilization of the solar energy. At present, the most widely used solar energy is a solar water heater, but the solar water heater can only meet the daily life requirements of people, has limited water heating degree and cannot meet the industrial requirements of high-temperature hot water and steam. In order to meet the higher requirements of people on solar heat utilization, a solar heat collector is required to absorb solar radiation energy more effectively.

Common solar power generation modes in life include a disc type, a tower type, a groove type and a linear Fresnel mode, and the groove type solar power generation system is most applied. Chinese patent of invention entitled publication No. CN104296396B, solar high temperature heat collecting device (application No. CN201410588479.5), discloses a structure, which includes an upper layer trough type condenser, a lower layer trough type condenser, an upper layer heat collecting tube, a lower layer heat collecting tube, and a double layer heat collecting tube support; the upper layer heat collecting pipe and the lower layer heat collecting pipe are fixedly connected through a double-layer heat collecting pipe support, the upper layer heat collecting pipe is arranged corresponding to the upper layer groove type condenser and is positioned at the focus of the upper layer groove type condenser, and the lower layer heat collecting pipe is arranged corresponding to the lower layer groove type condenser and is positioned at the focus of the lower layer groove type condenser; the upper layer heat collecting pipe and the lower layer heat collecting pipe have the same structure and are composed of at least one vacuum heat collecting pipe, each vacuum heat collecting pipe is provided with a metal straight pipe, a vacuum glass inner pipe is sleeved outside the metal straight pipe, a vacuum glass outer pipe is sleeved outside the vacuum glass inner pipe, a working medium is arranged in the metal straight pipe, and a vacuum layer is arranged between the vacuum glass inner pipe and the vacuum glass outer pipe. The structure is beneficial to high thermal efficiency and long service life. The invention patent of China (application No. CN201510010790.6) with the publication number of CN104567018B discloses a structure, wherein the groove type parabolic solar concentrating collector comprises a heat absorption component, a reflector component and a support device, and the support device comprises a support leg, a long shaft and a parabolic connecting plate; the reflector assembly comprises a paraboloid-shaped support body and a thin steel plate. The structure is convenient to disassemble and assemble.

In the conventional trough-type solar power generation system, in order to adjust the angle of the trough-type condenser at any time, solar energy is reflected by the trough-type condenser and then is emitted to the heating pipe, and the installation mode is limited by the conventional sunlight irradiation angle calculation method, and the installation mode is that the sunlight is installed in a manner that the sunlight is in a north-south axial direction or a east-west axial direction and is parallel to a horizontal plane, so that inconvenience is brought to the installation of the trough-type solar power generation system, the accuracy of focusing and aiming of the trough-type condenser is also influenced, and the power generation effect is further.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, provide a can make slot type solar electric system's installation direction unrestricted, improve spotlight ware focus degree of accuracy and then improve the slot type solar electric system's of electricity generation effect sunlight tracking means.

The utility model provides a technical scheme that above-mentioned technical problem adopted is that a slot type solar electric system's sunlight tracking means, including slot type spotlight ware and thermal-collecting tube, the pivot of extending along length direction is installed to slot type spotlight ware's bottom, the focus department that the thermal-collecting tube located slot type spotlight ware's top and was located slot type spotlight ware, its characterized in that still includes sunlight tracker, and this sunlight tracker includes transparent glass board and first reflector layer, the second reflector layer that is parallel to each other, first reflector layer is located on the last wall of transparent glass board and is arranged down, the second reflector layer is located on the lower wall of transparent glass board and is arranged up, it has the hole that can supply the light to pass to open on the first reflector layer, the plane that pivot axis and thermal-collecting tube axis are located is β, transparent glass board, first reflector layer, second reflector layer all are arranged perpendicular plane β.

Preferably, the transparent glass board takes the shape of rectangular form, in order to pass the hole and follow the straight line that transparent glass board length direction extends as the datum line, the tip of transparent glass board is installed and is close to the sensor module that the datum line arranged and can detect light and jet out the position.

Preferably, the sensor assembly comprises a first sensor and a second sensor, the first sensor is arranged on the end face of the transparent glass plate, and the second sensors are two groups and are respectively arranged on the side walls of the transparent glass plate, which are arranged oppositely. The first sensor and the second sensor are formed by arraying photosensitive devices on a transparent glass plate. The structure is favorable for increasing accurate judgment on the position of the reflecting surface, provides a more accurate control range for the angle adjustment of the groove type condenser, and further improves the focusing accuracy.

In each of the above solutions, the sunlight tracking apparatus of the trough-type solar power generation system further includes a driving mechanism capable of driving the rotating shaft to swing back and forth around its own axis, and the driving mechanism and the sensor assembly are controlled by the same control system. The assembly mode of the driving mechanism and the rotating shaft is the conventional technology, and is not described herein; the driving mechanism and the sensor assembly are controlled by the same control system, so that the angle of the groove type condenser can be conveniently adjusted in real time through the driving mechanism according to the signal detected by the sensor assembly.

Preferably, the number of the sunlight trackers is at least two, one set of the sunlight trackers is arranged near the first end of the trough concentrator, and the other set of the sunlight trackers is arranged near the second end of the trough concentrator. Considering that in a day, when the light rays incident into the hole are possibly parallel to the normal line along with the change of the angle of the sunlight, the sensor assembly cannot accurately detect light ray signals; by adopting the structure, because the position deviation exists between the two groups of sunlight trackers, the light ray reflection signals can be ensured to be detected all the time, and the sunlight trackers can be ensured to be normally used.

Preferably, the first reflective layer and the second reflective layer are metal reflective films coated on the transparent glass plate.

Compared with the prior art, the utility model has the advantages that the utility model discloses set up the sunlight tracker, as long as the plane α that the light of multiple reflection constitutes between first reflector layer and second reflector layer is parallel basically with plane β, just can make the focus position of slot type spotlight ware accurate to make the tracking of sunlight not rely on current calculation mode, cancelled the restriction of installation direction to slot type solar electric system, not only be convenient for install, and be convenient for adjust the slot type spotlight ware angle in real time and make it keep the focus accurate, be favorable to improving the generating effect.

Drawings

Fig. 1 is a partial schematic structural diagram (not including a driving mechanism) of an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 from another angle;

fig. 3 is a schematic structural diagram of a sunlight tracker in an embodiment of the present invention;

fig. 4 is a schematic diagram of a reflection state of sunlight in the solar tracker according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 4, the sunlight tracking device of the trough-type solar power generation system of the present embodiment includes a trough-type condenser 1, a heat collecting tube 2, and a sunlight tracker 3, where the trough-type condenser 1 has a reflective surface with a parabolic cross section, and the detailed structure of the trough-type condenser 1 is the conventional technology, and therefore, the detailed description thereof is omitted here. The bottom of the trough concentrator 1 is installed with a rotating shaft 11 extending along the length direction, a driving mechanism can drive the rotating shaft 11 to swing back and forth around its own axis, and the assembly manner of the driving mechanism and the rotating shaft 11 is conventional in the art and will not be described herein. The heat collecting tube 2 is arranged above the groove type condenser 1 through a support 111 extending out of the rotating shaft 11, and the heat collecting tube 2 is located at the focus of the groove type condenser 1.

As shown in fig. 3, the sunlight tracker 3 of the present embodiment includes a transparent glass plate 31, and a first reflective layer 32 and a second reflective layer 33 that are parallel to each other, where the first reflective layer 32 is disposed on an upper wall surface of the transparent glass plate 31, and the reflective surface is disposed downward, the second reflective layer 33 is disposed on a lower wall surface of the transparent glass plate 31, and the reflective surface is disposed upward, a hole 321 through which light can pass is formed in the first reflective layer 32, a plane where an axis of the rotating shaft 11 and an axis of the heat collecting tube 2 are located is β, the transparent glass plate 31, the first reflective layer 32, and the second reflective layer 33 are disposed perpendicular to the plane β, and the first reflective layer 32 and the second reflective layer 33 are metal reflective films coated on the transparent glass plate 31, and may be, for example, mercury films.

The transparent glass plate 31 of the present embodiment is formed in an elongated shape, a straight line passing through the hole 321 and extending along the length direction of the transparent glass plate 31 is used as a reference line 322, a sensor assembly 4 disposed near the reference line 322 and capable of detecting the light emitting position is mounted at the end of the transparent glass plate 31, the sensor assembly 4 and the driving mechanism are controlled by the same control system, so as to adjust the angle of the groove type condenser 1 in real time through the driving mechanism according to the signal detected by the sensor assembly 4, the shape of the transparent glass plate 31 is not limited, but in order to save materials, facilitate installation, and the like, the present embodiment is designed in an elongated shape, the sensor assembly 4 is configured to intelligently detect the light emitting angle, so as to determine the position of the reflecting surface α formed by multiple reflections of sunlight emitted between the first reflecting layer 32 and the second reflecting layer 33 from the hole 321, and further determine whether the reflecting surface α is parallel to the plane β, and if the reflecting surface α is parallel to the plane β, the focusing of the.

The sensor assembly 4 comprises a first sensor 41 and a second sensor 42, the first sensor 41 is arranged on the end face of the transparent glass plate 31, and the second sensors 42 are two groups and are respectively arranged on the side walls of the transparent glass plate 31 which are oppositely arranged.

The solar trackers 3 of this embodiment are two sets, one set of solar trackers 3 being arranged near the first end of the trough concentrator 1, the other set of solar trackers 3 being arranged near the second end of the trough concentrator 1. Considering that the light incident into the hole 321 may be parallel to the normal line along with the change of the sunlight angle during the day, the sensor assembly 4 cannot accurately detect the light signal; by adopting the structure, because the position deviation exists between the two groups of the sunlight trackers 3, the light reflection signals can be ensured to be detected all the time, and the sunlight trackers 3 can be ensured to be normally used.

The tracking method of the sunlight tracking device of the trough type solar power generation system in the embodiment comprises the following steps:

(1) sunlight is emitted between the first reflecting layer 32 and the second reflecting layer 33 from the hole 321 and is reflected for multiple times, and if the first sensor 41 detects a light emitting signal and the second sensor 42 does not detect the light emitting signal, the focusing position of the groove type condenser 1 is accurate without adjusting the direction;

(2) if the light emitting signal is not detected at the reference line end point of the first sensor 41, the light emitting signal is not detected by the second sensor 42 on the first side of the transparent glass plate 31, and the light emitting signal is detected by the second sensor 42 on the second side of the transparent glass plate 31, the driving mechanism drives the rotating shaft 11 to rotate, so that the groove type condenser 1 and the sunlight tracker 3 synchronously swing towards the second side of the transparent glass plate 41 until the light emitting signal is detected at the reference line end point of the first sensor 41 and the light emitting signal is not detected by the second sensor 42;

(3) if the first sensor 41 does not detect the light emitting signal, the second sensor 42 on the first side of the transparent glass plate 31 does not detect the light emitting signal, and the second sensor 42 on the second side of the transparent glass plate 31 does not detect the light emitting signal, the driving mechanism drives the rotating shaft 11 to rotate, so that the groove type condenser 1 and the sunlight tracker 3 synchronously swing towards the first side of the transparent glass plate 41 until the reference line end point of the first sensor 41 detects the light emitting signal and the second sensor 42 does not detect the light emitting signal.

Claims

1. The sunlight tracking device of the groove type solar power generation system comprises a groove type condenser (1) and a heat collecting pipe (2), wherein a rotating shaft (11) extending along the length direction is installed at the bottom of the groove type condenser (1), the heat collecting pipe (2) is arranged above the groove type condenser (1) and located at the focus of the groove type condenser (1), the sunlight tracking device is characterized by further comprising a sunlight tracker (3), the sunlight tracker (3) comprises a transparent glass plate (31), a first reflecting layer (32) and a second reflecting layer (33) which are parallel to each other, the first reflecting layer (32) is arranged on the upper wall surface of the transparent glass plate (31) and arranged downwards, the second reflecting layer (33) is arranged on the lower wall surface of the transparent glass plate (31) and arranged upwards, a hole (321) through which a light can pass is formed in the first reflecting layer (32), the axis of the rotating shaft (11) and the plane where the axis of the heat collecting pipe (2) is located are β, and the first reflecting layer (31) and the second reflecting layer (33) are arranged vertically and the plane (β).

2. The solar tracking apparatus of a trough solar power system according to claim 1, wherein: the transparent glass plate (31) is formed into a long strip shape, a straight line which penetrates through the hole (321) and extends along the length direction of the transparent glass plate (31) is used as a reference line (322), and a sensor assembly (4) which is arranged close to the reference line (322) and can detect the light emitting position is installed at the end part of the transparent glass plate (31).

3. The solar tracking apparatus of a trough solar power system according to claim 2, wherein: the sensor assembly (4) comprises a first sensor (41) and a second sensor (42), the first sensor (41) is arranged on the end face of the transparent glass plate (31), and the second sensors (42) are two groups and are respectively arranged on the side walls of the transparent glass plate (31) which are arranged oppositely.

4. The solar tracking apparatus of a trough solar power system according to claim 2, wherein: the device also comprises a driving mechanism which can drive the rotating shaft (11) to swing around the axis of the rotating shaft in a reciprocating mode, and the driving mechanism and the sensor assembly (4) are controlled by the same control system.

5. The solar tracking apparatus for a trough solar power system according to any of claims 1-4, further comprising: the solar light trackers (3) are at least two groups, one group of solar light trackers (3) are close to the first end of the groove type condenser (1) to be arranged, and the other group of solar light trackers (3) are close to the second end of the groove type condenser (1) to be arranged.

6. The solar tracking apparatus for a trough solar power system according to any of claims 1-4, further comprising: the first reflecting layer (32) and the second reflecting layer (33) are metal reflecting films coated on the transparent glass plate (31).