CN201535585U

CN201535585U - Straight-through solar energy vacuum heat collecting tube

Info

Publication number: CN201535585U
Application number: CN200920145160XU
Authority: CN
Inventors: 罗鸣
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-10
Filing date: 2009-03-10
Publication date: 2010-07-28
Anticipated expiration: 2019-03-10

Abstract

The utility model relates to a straight-through solar energy vacuum heat collecting tube, which consists of a glass tube, metal end covers and a metal flow passage tube, wherein the metal end covers are sealed and connected at both ends of the glass tube, the metal flow passage tube is arranged in the glass tube and is provided with or is not provided with metal fins, tube interfaces at both ends of the metal flow passage tube extend outside the metal end covers arranged at both ends of the glass tube, and solar spectrum selective absorption coatings are coated on the upper surface of the metal fins or the outer surface of the metal flow passage tube. The utility model is characterized in that the metal flow passage tube arranged in the glass tube is provided with bended and communicated metal flow passage tube compensators, and because the bended and communicated metal flow passage tube compensators are arranged in the glass tube by the utility model, different swelling capacities of metal and glass can be absorbed and digested in the sealed glass tube. Thereby, a complicated compensation sealing device arranged outside the glass tube is omitted. The utility model has the advantages of simple structure, good integrality, low manufacture cost, good use effect and convenient installation and conveying, and can be widely used in various straight-through vacuum heat collecting tube solar energy water heating systems.

Description

Straight-through type solar energy vacuum heat collecting tube

Technical field

The utility model relates to a kind of solar energy heat collector, particularly relates to a kind of straight-through type solar energy vacuum heat collecting tube.

Background technology

Solar energy is inexhaustible, nexhaustible, unusual Jie Jing green energy resource, continuous increase along with the global energy cost, the application of solar energy more and more widely, particularly aspect the hot-water heating system of people's bathing, the hot-water heating system of applied solar energy vacuum heat collection pipe is installed in the public and civil buildings more and more, existing solar vacuum heat-collecting pipe is divided into the glassy metal vacuum tube two big classes of the all-glass vacuum tube and the metal absorber of glass absorber, wherein the glassy metal vacuum tube generally comprises the glass outer tube, by the metal end of metal-glass sealing at glass outer tube two ends, be arranged on the metal flow deferent in the glass outer tube, and the metal flow deferent mouth of pipe that passes metal end, on the metal flow deferent, add and be with or without metal fin, there is solar spectral to select absorber coatings at the metal flow passage tube outer surface or at metal fin upper surface coated, some also is provided with optically focused reflection thermal-arrest plate below the metal flow deferent of band metal fin, yet, because the coefficient of expansion of glass and metal is different, therefore generally between the outside of metal end and the metal flow deferent mouth of pipe, be provided with the parts such as bellows that compensate usefulness, but bellows that can stretch and the sealing between the end cap have caused the design of a series of labyrinths again, and have also increased many troubles when transportation and installation.

Summary of the invention

The purpose of this utility model is at the problems referred to above, provides a kind of shipment convenient, can be at the inner straight-through type solar energy vacuum heat collecting tube that solves the expansion absorption compensation problem of glass tube.

The utility model for achieving the above object, take following technical scheme: a kind of straight-through type solar energy vacuum heat collecting tube, it is by glass tube, sealing-in is at the metal end at glass tube two ends, be arranged on the metal flow deferent in the glass tube and be connected with or do not connect metal fin, and the metal flow passage interface tube that extends in described glass tube two metal ends outside connection metal flow deferent, on metal fin, coating for selective absorption of sunlight spectrum is arranged, it is characterized in that in described glass tube, being provided with the compensator of the crooked described metal flow deferent of connection with metal flow passage tube outer surface coated.

The shape of described compensator is tubulose in the shape of a spiral, and the two ends of described helix tube connect described metal flow deferent;

The shape of described compensator is arc tubulose, and the two ends of described arc pipe connect described metal flow deferent;

The shape of described compensator is snakelike tubulose, and the two ends of described coiled pipe connect described metal flow deferent.

Described compensator is arranged on the middle part of described glass tube;

Described compensator is arranged on an end of described glass tube;

Described compensator fills the total length that reaches described glass tube inner chamber.

Below described metal flow deferent, be provided with optically focused reflection thermal-arrest plate.

The utility model is owing to take above technical scheme, and it has advantage:

1. the utility model is because the metal flow deferent that leads directly in the glass tube is provided with crooked compensator, therefore can the swell increment that metal is different with glass digest and assimilate at the sealed glass pipe, thereby saved compensation sealing device complicated outside glass tube, make solar vacuum heat-collecting pipe good integrity of the present utility model, install and convenient transportation.

2. therefore the utility model can adopt various curved shape as required, and be arranged on different positions because compensator is arranged in the glass tube, designs and make very convenient; The utility model is simple in structure, and cost of manufacture is low, and result of use is good, installs and convenient transportation, and it can be widely used in the various straight-through vacuum heat collecting tube solar water heating systems.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is the utility model helical form tubulose compensator structure partial schematic diagram.

Fig. 3 is the arc tubulose compensator structure of a utility model partial schematic diagram.

Fig. 4 is the snakelike tubulose compensator structure of a utility model partial schematic diagram.

Fig. 5 is the utility model cylindrical metal flow-path tube structural representation.

Fig. 6 is that the utility model metal flow deferent is provided with the metal fin structural representation.

Fig. 7 is that the utility model compensator is arranged on an end structure schematic diagram in the glass tube.

Fig. 8 is that the utility model compensator fills and reaches whole glass tube inner chamber total length structural representation.

Fig. 9 be among Fig. 1 along A-A hatching line cutaway view, below the metal flow deferent, be provided with optically focused reflection thermal-arrest plate among the figure.

The specific embodiment

As shown in Figure 1, the utility model is a kind of straight-through type solar energy vacuum heat collecting tube, it is by glass tube 1, sealing-in is at the metal end 2 at glass tube 1 two ends, be arranged on metal flow deferent 3 or cylindrical metal flow-path tube 3A in the glass tube 1, as Fig. 5, above metal flow deferent 3, be connected with or do not connect fin 4, the below of metal flow deferent 3 is provided with light gathering baffle-board 8, as Fig. 9, above main parts size is formed, at fin 4 upper surfaces or at metal flow deferent 3 or its outer surface coated of cylindrical metal flow-path tube 3A not coating for selective absorption of sunlight spectrum is arranged with fin 4, metal flow deferent 3 or cylindrical metal flow-path tube 3A two ends interface tube 5 extend in glass tube 1 two ends metal end 2 outsides, it is characterized in that being arranged on metal flow deferent 3 or cylindrical metal flow-path tube 3A in the glass tube 1, be provided with curved shape and be communicated with metal flow deferent 3 or its compensator 6 that expands with heat and contract with cold of cylindrical metal flow-path tube 3A.

This straight-through type solar energy vacuum heat collecting tube, the curved shape of its compensator 6 is tubulose 6A in the shape of a spiral; As Fig. 2, or the curved shape of compensator 6 is snakelike tubulose 6B; As Fig. 4, or the curved shape of compensator 6 is arc tubulose 6C, as Fig. 3.

This straight-through type solar energy vacuum heat collecting tube, its in the shape of a spiral tubulose compensator 6A, be snakelike tubulose compensator 6B or be arc tubulose compensator 6C and be arranged in the glass tube 1, between the middle part of metal flow deferent 3; As shown in Figure 1, or between the middle part of cylindrical metal flow-path tube 3A; As shown in Figure 5, or in the shape of a spiral tubulose compensator 6A, be snakelike tubulose compensator 6B or be arc tubulose compensator 6C and be arranged on an end of the metal flow deferent 3 in the glass tube 1 or the end of cylindrical metal flow-path tube 3A, described compensator (6A, 6B, a port 5 6C) extends in the outside of the metal end 2 of glass tube 1, as shown in Figure 7.

This straight-through type solar energy vacuum heat collecting tube, it is characterized in that in the shape of a spiral tubulose compensator 6A, being snakelike tubulose compensator 6B or being arc tubulose compensator 6C itself is exactly a metal flow deferent 3 of making described curved shape, and fill the total length that reaches glass tube 1 inner chamber, its two ends interface tube 5 extends in the outside of the two ends metal end 2 of glass tube 1, as shown in Figure 8.

Claims

1. straight-through type solar energy vacuum heat collecting tube, it is by glass tube (1), sealing-in is at the metal end (2) at glass tube (1) two ends, be arranged on metal flow deferent (3) or cylindrical metal flow-path tube (3A) in the glass tube (1), be connected with in the top of metal flow deferent (3) or do not connect fin (4), the below of metal flow deferent (3) is provided with light gathering baffle-board (8), above main parts size is formed, at fin (4) upper surface or coating for selective absorption of sunlight spectrum is not being arranged with the metal flow deferent (3) of fin (4) or the outer surface coated of cylindrical metal flow-path tube (3A), the two ends interface tube (5) of metal flow deferent (3) or cylindrical metal flow-path tube (3A) extends in the outside of glass tube (1) two ends metal ends (2), it is characterized in that being arranged on that metal flow deferent (3) in the glass tube (1) or cylindrical metal flow-path tube (3A) are provided with curved shape and is communicated with metal flow deferent (3) or its compensator that expands with heat and contract with cold (6) of cylindrical metal flow-path tube (3A).

2. straight-through type solar energy vacuum heat collecting tube according to claim 1, the curved shape that it is characterized in that compensator (6) is tubulose (6A) in the shape of a spiral; Or the curved shape of compensator (6) is snakelike tubulose (6B); Or the curved shape of compensator (6) is arc tubulose (6C).

3. straight-through type solar energy vacuum heat collecting tube according to claim 2, it is characterized in that described compensator (6A, 6B, 6C) any compensator in is arranged in the glass tube (1), between the middle part of metal flow deferent (3) or between the middle part of cylindrical metal flow-path tube (3A); Or described compensator (6A, 6B, any compensator 6C) is arranged on an end of the interior metal flow deferent of glass tube (1) (3) or an end of cylindrical metal flow-path tube (3A), and described compensation (6A, 6B, 6C) in the port (5) of any compensator extend in the outside of an end metal end (2) of glass tube (1).

4. straight-through type solar energy vacuum heat collecting tube according to claim 2, it is characterized in that described compensator (6A, 6B, any compensator 6C) itself is exactly a metal flow deferent (3) of making described curved shape, and fill the total length that reaches glass tube (1) inner chamber, its two ends interface tube (5) extends in the outside of the two ends metal end (2) of glass tube (1).