CN202494237U

CN202494237U - Solar heat collection pipe

Info

Publication number: CN202494237U
Application number: CN 201220012320
Authority: CN
Inventors: 冯方军
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-01-01
Filing date: 2012-01-01
Publication date: 2012-10-17
Anticipated expiration: 2022-01-01

Abstract

The utility model discloses a solar heat collection pipe, which comprises a glass outer pipe (1) and a glass inner pipe (2), wherein the glass inner pipe (2) is placed in the glass outer pipe (1); the periphery of the glass inner pipe (2) is provided with a light condensing layer (21); the glass inner pipe (2) is a U-shaped pipe of which one end is provided with a water inlet and the other end is provided with a water outlet; and a vacuum annular cavity (3) is sealed between the glass outer pipe (1) and the glass inner pipe (2) through fusion. The solar heat collection pipe has the advantages that both the inner pipe and the outer pipe are made of glass and can be fused together by melting the inner glass pipe and the outer glass pipe through heating to form the vacuum annular cavity without a seal ring, so that the requirement of high vacuum is met, the structure is simple, the manufacturing is convenient, the heat loss of water flow during heat collection can be obviously reduced, the heat collection effect is effectively improved, the fusion between the inner glass pipe and the outer glass pipe is also extremely convenient, and the glass pipe is adopted as the inner pipe and has no rusting problem, so that the service life of the heat collection pipe is longer.

Description

A kind of solar energy heat collection pipe

Technical field

The utility model relates to a kind of luminous energy heater manufacture technology field, especially relates to a kind of solar energy heat collection pipe.

Background technology

Existing a kind of application number discloses a kind of structure for the Chinese utility model patent that the CN201120018551.2 name is called " solar energy " finned U-shaped " thermal-collecting tube "; Its structure mainly comprises " U " shape copper pipe, sail shape fin, single seal cover, transparent insulating tube, retroreflective sheeting etc.; Because the vacuum seal of adopting single seal cover and single-layer and transparent insulating tube to combine is incubated measure, realized directly having changed thermal-arrest, the heat transfer type of prior art by the fin of " U " shape copper pipe thermal-arrest scheme as the solar irradiation face; And cancelled the middle heat transfer link of unnecessary poor efficiency; Simplify the structure, in the heat transfer medium in the emittance of collecting fins is directly delivered to " U " shape copper pipe, obviously reduced the surface temperature of irradiation face; Improved heat transfer rate; Improved hot effect, and made the multinomial technical measures that can obviously improve effective collector area and thermal-arrest usefulness such as sail shape fin, heat absorption conduit, reflection heat build-up, inferior light black matrix obtain utilization, reached radiation absorptance α and reach 96%; Phase specific heat is imitated and has been improved nearly 40%; And the technique effect that cost reduces, thus have reasonable in design, cost reduces, heat is imitated raising characteristics, and thermal diffusion lose little, heat transfer rate is high, reliability, technology are simple, easy for installation, be easy to advantage such as production in enormous quantities.But its shortcoming is, this thermal-collecting tube, and one, pipe adopts copper pipe in it, and outer tube adopts glass tube; Can not directly be welded together between interior pipe and the outer tube, and will seal through envelope confidential paper, its sealing effectiveness is not good, does not reach the requirement of high vacuum; And the time is easy to gas leakage once long, thereby reduces vacuum, and until there not being vacuum state, thermal losses was big when water was flowed in interior pipe; Two, form because of interior pipe adopts copper, cost of manufacture is high, and more serious is that copper is easy to occur patina as interior pipe; Reduce the service life of pipe greatly in making, and three, the shared outer tube bore of interior pipe space is few, and complex design is installed and the equal trouble very of assembling; Four, because of interior Guan Yitong is a material, its cost of manufacture is high, and manufacture craft is also complicated.Therefore its structure awaits to improve.

Summary of the invention

The utility model technical problem to be solved be to above-mentioned prior art present situation and provide a kind of simple in structure, the current thermal losses is few and cost of manufacture is low, a kind of solar energy heat collection pipe of long service life.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: this solar energy heat collection pipe; Include glass outer tube and glass inner tube; Said glass inner tube places the glass outer tube inner; The periphery of said glass inner tube is provided with light collecting layer, it is characterized in that: said glass inner tube is that an end is provided with the U-shaped pipe that the water inlet other end is provided with delivery port, becomes the annular chamber of vacuum between said glass outer tube and the glass inner tube through frit seal.

As improvement, said light collecting layer may be selected to be the silver-colored light powder coating or the condensing film that can absorb sunshine.

Improve again, also can be provided with in the annular chamber between said glass outer tube and the glass inner tube can with glass inner tube not with the contacted support member of glass outer tube wall; Said support member can preferably be arranged on the bottom of glass outer tube away from water inlet and delivery port one end.

Improve again, also can be provided with the absorbent that can absorb the bulk of gas in the annular chamber on the said support member.

Compared with prior art, the advantage of the utility model is that it is that an end is provided with the U-shaped pipe that the water inlet other end is provided with delivery port that this thermal-collecting tube adopts glass inner tube, between glass outer tube and glass inner tube, becomes the annular chamber of vacuum through frit seal.This structure has: interior pipe and outer tube are made by glass, and the outer glass pipe fusing also is welded together each other in can making through heating between interior pipe and the outer tube, forms the annular chamber of vacuum; And no longer need sealing ring, thus reach requirement to high vacuum, not only simple in structure; Easy to make; And the thermal loss of water flows can significantly reduce thermal-arrest the time, the Heat-collecting effect that improves effectively, and the welding between the interior pipe glass tube is also very convenient; Also have, pipe adopts glass tube not have the problem of getting rusty in this, and institute is so that the thermal-collecting tube longer service life; Also have, pipe adopts glass to be made in this, and its cost of manufacture is lower, and manufacture craft is also simpler, saves production cost effectively; There is interior Guan Weiyi end to be provided with the U-shaped pipe that the water inlet other end is provided with delivery port again; Water gets in the pipe from the water inlet of U-shaped pipe; Pipe in flowing out from delivery port through heating back, so this device can couple together use with a plurality of thermal-collecting tubes, thus improved the efficiency of light energy utilization of thermal-collecting tube; Therefore firing rate is faster, and heats is better.

Description of drawings

Fig. 1 is the structural perspective of the utility model embodiment;

Fig. 2 is along the profile of K-K line among Fig. 1;

Fig. 3 is the structural perspective of interior pipe among Fig. 1;

Fig. 4 is the structural perspective of Fig. 1 middle external tube.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Extremely shown in Figure 4 like Fig. 1; This solar energy heat collection pipe includes glass outer tube 1 and glass inner tube 2, and said glass inner tube 2 places glass outer tube 1 inside; The periphery of said glass inner tube 2 is provided with light collecting layer 21, and this light collecting layer 21 is for absorbing the silver-colored light powder coating or the condensing film of sunshine.Said glass inner tube 2 is that an end is provided with the U-shaped pipe that the water inlet other end is provided with delivery port, becomes the annular chamber 3 of vacuum between said glass outer tube 1 and the glass inner tube 2 through frit seal.Be provided with in the annular chamber 3 between glass outer tube 1 and glass inner tube 2 can with glass inner tube 2 not with the contacted support member 4 of glass outer tube 1 inwall; This support member 4 is arranged on the bottom of glass outer tube 1 away from water inlet and delivery port one end, and support member 4 is provided with the absorbent that can absorb the bulk of gas in the annular chamber 3.

Claims

1. solar energy heat collection pipe; Include glass outer tube (1) and glass inner tube (2); Said glass inner tube (2) places glass outer tube (1) inside; The periphery of said glass inner tube (2) is provided with light collecting layer (21), it is characterized in that: said glass inner tube (2) is that an end is provided with the U-shaped pipe that the water inlet other end is provided with delivery port, becomes the annular chamber (3) of vacuum between said glass outer tube (1) and the glass inner tube (2) through frit seal.

2. solar energy heat collection pipe according to claim 1 is characterized in that: said light collecting layer (21) is for absorbing the silver-colored light powder coating or the condensing film of sunshine.

3. according to the described solar energy heat collection pipe of each claim in the claim 1 to 2, it is characterized in that: be provided with in the annular chamber (3) between said glass outer tube (1) and the glass inner tube (2) can with glass inner tube (2) not with the contacted support member of glass outer tube (1) inwall (4).

4. solar energy heat collection pipe according to claim 3 is characterized in that: said support member (4) is arranged on the bottom of glass outer tube (1) away from water inlet and delivery port one end.

5. solar energy heat collection pipe according to claim 3 is characterized in that: said support member (4) is provided with the absorbent that can absorb the bulk of gas in the annular chamber (3).