CN111043775A

CN111043775A - Solar energy slot type solar-thermal power generation heat collection structure

Info

Publication number: CN111043775A
Application number: CN201911390177.6A
Authority: CN
Inventors: 赵慧娟; 解欢; 张仲玺; 赵松; 魏忠斌
Original assignee: Xijing University
Current assignee: Xijing University
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-04-21

Abstract

A solar trough type photo-thermal power generation and heat collection structure comprises two cement piers, wherein support frames are connected to the cement piers, the upper ends of the support frames on two sides are respectively connected with a rotating shaft, the outer side of the rotating shaft on one side is connected with a driver, the inner sides of the rotating shafts on two sides are respectively connected with a connecting plate, a torque tube is connected between the connecting plates on two sides, an integral type reflector bracket and a heat collection tube bracket are installed on the torque tube, a heat collection tube is connected to the top of the heat collection tube; controlling the driver to rotate the rotating shaft, so that the solar rays directly irradiate the parabolic reflector, introducing a heat-conducting medium into the heat collecting tube, and reflecting the solar rays by the parabolic reflector to heat the medium in the heat collecting tube, thereby realizing the collection of the solar rays; the invention has the advantages of simple structure, low cost, high precision and high efficiency.

Description

Solar energy slot type solar-thermal power generation heat collection structure

Technical Field

The invention relates to the technical field of solar power generation, in particular to a solar trough type photo-thermal power generation heat collection structure.

Background

The most main utilization mode of solar energy is solar energy power generation, including solar photo-thermal power generation and solar photovoltaic power generation, the manufacturing process of a solar photovoltaic panel can cause certain environmental pollution, zero emission of the whole process can be really realized through the solar photo-thermal power generation, high-quality electricity which is stable for a long time can be obtained, and the solar photovoltaic panel is one of the most promising solar energy utilization modes in the future.

The groove type solar photo-thermal power generation is a structural form of solar photo-thermal power generation, has the most application at present due to simple structure and relatively low cost, and is a structural form with the most development prospect in the future. At present, the groove type photo-thermal power generation has three common structural forms, namely a torque tube type, a torque box type and a whole plate stretching type, and the advantages and the disadvantages of the torque tube type, the torque box type and the whole plate stretching type are different from each other in the aspects of precision, production cost, wind resistance, overall weight, light condensation efficiency, transportation, installation and the like. However, they all have the following disadvantages: 1) the existing structure is complex, and the processing difficulty is large (such as: reflector brackets and torque tubes), the processing cost is high; 2) the precision of the light-gathering groove is difficult to ensure, and the light-gathering efficiency is low, so that the power generation efficiency is low; 3) the whole weight is too heavy, the structure is complex, the transportation difficulty is high, and the transportation cost is high; 4) the field installation is not convenient and fast enough, and the installation and debugging difficulty is large.

The above defects lead to the over-high overall cost of the solar photo-thermal power generation equipment and the over-high investment in the early stage of power plant construction, and seriously restrict the development and application prospect of solar photo-thermal power generation.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a solar trough type photo-thermal power generation heat collection structure which is simple in structure and has the advantages of low cost, high precision and high efficiency.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a solar energy slot type solar-thermal power generation thermal-arrest structure, including two cement mounds 3, be connected with support frame 2 on the

cement mound

3, 2 upper ends of both sides support frame are connected with pivot 7 respectively, 7 outsides of one side pivot are connected with

driver

6, 7 inboard of both sides pivot are connected with a connecting plate 4 respectively, be connected with torque tube 9 between the connecting plate 4 of both sides, install integral reflector support 1 and heat collecting tube support 5 on the torque tube 9, heat collecting tube support 5 top is connected with thermal-collecting tube 8, parabolic reflector 10 is installed to integral reflector support 1.

The upper surface of the integral type reflector bracket 1 is provided with a reflector positioning surface 11, a parabolic reflector 10 is arranged on the reflector positioning surface 11, and two transportation positioning holes 12 are arranged on the side surface of the integral type reflector bracket 1.

The torque tube 9 is of a rectangular cross section, a reflector bracket mounting hole 13 is arranged on an upper surface flange of the torque tube 9, and a connecting plate mounting hole 14 is arranged on an end surface flange of the torque tube 9.

The integral reflector bracket 1 is integrally formed by glass fiber reinforced plastic materials, and the cross section of the integral reflector bracket is I-shaped.

The rotating shaft 7 is positioned at the gravity center of the trough type heat collector.

The horizontal heights of the top ends of the support frames 2 at the two sides are consistent, and the rotation centers of the rotating shafts 7 at the two sides are on the same axis.

The invention has the beneficial effects that:

1. the invention adopts the integral reflector bracket, the processing precision is easy to ensure, and the processing cost is low;

2. the integral reflector bracket is integrally formed by adopting glass fiber reinforced plastic materials, is suitable for industrial production, and has the advantages of light weight, convenient transportation, simple field installation, long service life and the like;

3. the torque tube adopts a rectangular section structural form, the integral reflector bracket is arranged on the upper surface of the rectangular tube, the processing difficulty of the installation position is small, the precision is easy to ensure, and the field installation is convenient.

Based on the advantages, the novel solar trough type photo-thermal power generation heat collection structure provided by the invention can greatly reduce the processing cost of parts, reduce the field installation difficulty and reduce the early investment cost of a power plant; the mounting precision of the reflector is improved, the power generation efficiency is further improved, and the power generation cost is reduced.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is a schematic structural view of the integrated mirror support 1 of the present invention.

Fig. 4 is a schematic sectional view taken along line a-a in fig. 3.

Fig. 5 is a schematic cross-sectional view of B-B in fig. 3.

Fig. 6 is a schematic cross-sectional view of C-C in fig. 3.

Fig. 7 is a schematic structural diagram of the torque tube 9 of the present invention.

Fig. 8 is a left side view of fig. 7.

Fig. 9 is a schematic cross-sectional view taken along line D-D of fig. 7.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

referring to fig. 1 and 2, a solar trough type photo-thermal power generation heat collection structure comprises two cement piers 3, wherein a support frame 2 is connected to each cement pier 3, each cement pier 3 is used for reliably fixing the support frame 2 on the ground, each support frame 2 is used for supporting the whole heat collection equipment, the upper ends of the support frames 2 on two sides are respectively connected with a rotating shaft 7, the outer side of each rotating shaft 7 on one side is connected with a driver 6, the inner sides of the rotating shafts 7 on two sides are respectively connected with a connecting plate 4, a torque tube 9 is connected between the connecting plates 4 on two sides, an integral type reflector support 1 and a heat collection tube support 5 are mounted on the torque tube 9, the top of the heat collection tube support 5 is connected with a heat collection tube 8, the; the driver 6 is used for driving the whole heat collector to rotate around the rotating shaft 7; the heat collecting pipe bracket 5 is used for fixing a heat collecting pipe 8;

referring to fig. 3, 4, 5 and 6, a reflector positioning surface 11 is disposed on an upper surface of the integrated reflector holder 1, a parabolic reflector 10 is mounted on the reflector positioning surface 11, the integrated reflector holder 1 is used for fixing the parabolic reflector 10, and the parabolic reflector 10 is used for reflecting solar rays and collecting heat; the side of the integral reflector bracket 1 is provided with two transportation positioning holes 12, so that the transportation is convenient.

Referring to fig. 7, 8 and 9, the torque tube 9 has a rectangular cross section, and the rectangular cross section structure can bear larger bending moment and has higher strength; the upper surface of the integrated reflector bracket 1 is a mounting surface of the integrated reflector bracket 1, a reflector bracket mounting hole 13 is arranged on an upper surface flange of the torque tube 9, the mounting precision of the integrated reflector bracket 1 is only related to the upper surface of the torque tube 9, the mounting precision is easy to guarantee, the processing is simple, and the field mounting is convenient; the flange of the end face of the torque tube 9 is provided with a connecting plate mounting hole 14 for fixing the connecting plate 4.

The integral reflector bracket 1 is integrally formed by glass fiber reinforced plastic, the cross section of the integral reflector bracket is I-shaped, the integral reflector bracket is simple in structure and high in precision, the glass fiber reinforced plastic is light in weight, high in rigidity, easy to industrially produce and transport in long distance and low in cost, and the strength of the reflector bracket can be improved by selecting the I-shaped cross section.

The rotating shaft 7 is positioned at the gravity center of the trough type heat collector, so that the torque required when the heat collector rotates around the rotating shaft 7 is reduced.

The horizontal heights of the top ends of the two side supporting frames 2 are consistent, and the rotation centers of the rotating shafts 7 on the two sides are on the same axis, so that the whole heat collector can conveniently rotate around the rotating shafts 7.

The working principle of the invention is as follows:

firstly, producing an integral reflector bracket 1, a support frame 2, a connecting plate 4, a heat collecting pipe bracket 5, a driver 6, a rotating shaft 7, a heat collecting pipe 8, a torque pipe 9 and a parabolic reflector 10 in a factory, and transporting the reflector to a power plant after ensuring the requirement of processing precision; and pouring the cement pier 3 on the ground site of the power plant according to the size requirement, and debugging and installing parts according to the technical scheme of the invention.

After the adjustment and installation are finished, the driver 6 is controlled to enable the rotating shaft 7 to rotate, so that the solar rays directly irradiate the parabolic reflector 10, the heat-conducting medium is introduced into the heat-collecting tube 8, and the parabolic reflector 10 reflects the solar rays to heat the medium in the heat-collecting tube 8, so that the collection of the solar rays is realized.

Claims

1. The utility model provides a solar energy slot type solar-thermal power generation thermal-arrest structure, includes two cement mounds (3), its characterized in that: be connected with support frame (2) on cement mound (3), both sides support frame (2) upper end is connected with pivot (7) respectively, one side pivot (7) outside is connected with driver (6), both sides pivot (7) inboard is connected with a connecting plate (4) respectively, be connected with torque tube (9) between both sides connecting plate (4), integral reflector support (1) of installation and heat collecting tube support (5) are gone up in torque tube (9), heat collecting tube (8) are connected with at heat collecting tube support (5) top, parabolic reflector (10) are installed to integral reflector support (1).

2. The solar trough photo-thermal power generation and heat collection structure of claim 1, wherein: the upper surface of the integral reflector bracket (1) is provided with a reflector positioning surface (11), a parabolic reflector (10) is arranged on the reflector positioning surface (11), and two transportation positioning holes (12) are arranged on the side surface of the integral reflector bracket (1).

3. The solar trough photo-thermal power generation and heat collection structure of claim 1, wherein: the torque tube (9) is of a rectangular cross section, a reflector bracket mounting hole (13) is formed in an upper surface flange of the torque tube (9), and a connecting plate mounting hole (14) is formed in an end surface flange of the torque tube (9).

4. The solar trough photo-thermal power generation and heat collection structure of claim 1, wherein: the integral reflector bracket (1) is integrally formed by glass fiber reinforced plastic materials, and the cross section of the integral reflector bracket is I-shaped.

5. The solar trough photo-thermal power generation and heat collection structure of claim 1, wherein: the rotating shaft (7) is positioned at the gravity center of the trough type heat collector.

6. The solar trough photo-thermal power generation and heat collection structure of claim 1, wherein: the horizontal heights of the top ends of the supporting frames (2) at the two sides are consistent, and the rotation centers of the rotating shafts (7) at the two sides are on the same axis.