CN201476343U

CN201476343U - Water vapor double I-shaped solar energy circulating system

Info

Publication number: CN201476343U
Application number: CN2009201719492U
Authority: CN
Inventors: 盛道林; 吴建刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-05-08
Filing date: 2009-05-08
Publication date: 2010-05-19
Anticipated expiration: 2019-05-08

Abstract

The utility model discloses a water vapor double I-shaped solar energy circulating system and a solar energy collector tube adopted in the system, wherein the system is formed by connecting a plurality of solar thermal collectors, a pump and a water storage tank in series; the solar thermal collectors adopt the novel solar energy collector tube which comprises a double-layer glass pipe, a metal pipe and the like; the collector tube is slantwise arranged on a bracket; the upper end of the collector tube is communicated with a heat collecting tank and the lower end thereof is communicated with a circulating pipe or a water pipe; and when the collector tube is used, cold fluid enters from the lower end of the metal pipe and absorbs the heat, and then hot fluid flows toward the upper end and enters into the heat collecting tank, the cold fluid enters from the lower end of the metal pipe again, thus forming a big circulation in the whole system, causing the circulating speed to speed up and the heat efficiency to accelerate. As the fluid flows in the metal pipe and does not flow in the glass pipe, the whole pipe can bear higher pressure and has good safety. The fluid in the metal pipe can be water, air or oil.

Description

Aqueous vapor duplex type solar energy circulating system

Technical field:

The utility model relates to a kind of aqueous vapor duplex type solar energy circulating system and is applied to solar energy heat collection pipe in this circulatory system, belongs to the solar thermal collector technical field.

Background technology:

Because the energy of solar thermal collector is from the sun, its non-environmental-pollution, no potential safety hazard, the energy can infinitely use, and its long service life, and the critical piece vacuum tube is about 15 years service life, realized the least cost hot-water supply, therefore, solar thermal collector is widely used.The thermal-collecting tube of existing solar thermal collector is exactly a vacuum tube, structure is the same with traditional glass liner for vacuum flask structure, it is the caecum formula structure of an end opening, other end sealing, the vacuum tube of this structure, cold water enters from the upper end of vacuum tube, after the heat absorption again the upper end from vacuum tube return, the shared runner of hot water or cold water, cause being easy to generate the phenomenon that the hot water or cold water mixes near the mouth of pipe, circulation rate is slow, and the thermal efficiency is low; In addition, for the big solar thermal collection system of consumption demand, whole system is difficult to form systemic circulation, and collecting efficiency is low.

Summary of the invention:

For overcoming the defective of prior art, the purpose of this utility model is to provide a kind of solar energy circulating system, hot fluid and cold fluid are co-flow in the employed thermal-collecting tube in this system, in whole system, form a systemic circulation, the cold fluid and hot fluid that prior art exists frequently mixes to overcome, cycle-index is few, the problem that the efficiency of heating surface is low.

The utility model technical solution problem adopts following technical scheme:

Aqueous vapor duplex type solar energy circulating system, described system comprises:

A plurality of heat collectors of series connection successively, each heat collector is made of the thermal-collecting tube that heat-collecting box, support and a plurality of upper end that is arranged side by side are communicated with heat-collecting box, in being provided with of adjacent two heat collectors, a plurality of thermal-collecting tubes of the heat-collecting box of last heat collector and next heat collector pass through cross current;

In the heat collector of a plurality of series connection successively, the heat-collecting box that wherein is in the heat collector of tail end is communicated with storage tank top, and a plurality of thermal-collecting tubes lower end that is in the heat collector of head end is communicated with the circulation pipe that is communicated in the storage tank bottom;

Described circulation pipe is provided with the circulating pump that is communicated with water supply network.

Design feature of the present utility model also is:

Circulation pipe between circulating pump and the storage tank is provided with first control valve, is provided with second control valve in the porch of circulating pump.

Described thermal-collecting tube is by as the metal tube of inner bag be in the outer field double-layer glass tube of metal tube and constitute, and the outer surface of described metal tube is coated with selective absorbing film.

The cross section of described thermal-collecting tube or be circular or for oval.

A kind of solar energy heat collection pipe, it is characterized in that constituting by the metal tube of both ends open and the double-layer glass tube that is socketed in outside the metal tube, form vacuum between the double glazing, described double-layer glass tube is formed by being socketed in the outer a plurality of connectors series connection of metal tube by many root units pipe, is coated with selective absorbing film at the outer surface of described metal tube.

The inner surface of half that faces south at the double-layer glass tube inner layer glass is coated with the reflecting layer that silver or aluminium form minute surface.

Compared with the prior art, the beneficial effects of the utility model are embodied in:

1, solar energy circulating system of the present utility model, employed thermal-collecting tube operation logic is completely different with the all-glass vacuum tube of an existing end opening.During use, cold fluid enters from the lower end of thermal-collecting tube, heat absorption back hot fluid flows into heat-collecting box from the lower end of thermal-collecting tube to the upper end, circulation enters total storage tank successively, cold fluid enters from the lower end of thermal-collecting tube again, make that hot fluid and cold fluid are co-flow, circulation is accelerated, the thermal efficiency improves;

2, since the outer field double-layer glass tube of thermal-collecting tube be segmented sheathing on metal tube, and fluid is to flow in metal tube, so whole thermal-collecting tube can bear higher pressure;

3, selective absorbing film is plated in the metal tube outer surface, because metal heat-conducting is good, so thermal efficiency ratio glass-vacuum tube height;

4, on glass-vacuum tube, its outer tube make progress half be transparent, silver-plated or aluminium formation minute surface reflection on half its inwall on the sunny side, make and enter the sunlight that shines behind the transparent outer tube on the reflecting layer and all reflex in the shade of metal tube, metal tube is subjected to light on four sides, has improved collecting efficiency thereby strengthened light-receiving area.

Description of drawings:

Fig. 1 is the schematic diagram of the utility model circulatory system; Fig. 2 is the structural representation of single heat collector among Fig. 1; Fig. 3 is the structural representation of the first embodiment thermal-collecting tube; Fig. 4 is the structural representation of single heat collector among second embodiment; Fig. 5 is the structural representation of thermal-collecting tube among Fig. 4; Fig. 6,7 is the radial section figure of thermal-collecting tube among second embodiment; Fig. 8 is the radial section figure that is provided with the thermal-collecting tube in reflecting layer among second embodiment.

Number in the figure: 1 is heat collector, 11 heat-collecting boxes, 12 supports, 13 thermal-collecting tubes, 131,131 ' metal tube, 132,132 ' double-layer glass tube, 133 selective absorbing films, 2 water pipes, 3 storage tanks, 31 temperature sensors, 32 level sensors, 4 circulation pipes, 5 circulating pumps, 6 first control valves, 7 second control valves, 8 connectors, 9 reflecting layer.

Below pass through the specific embodiment, and the utility model is described in further detail in conjunction with the accompanying drawings.

The specific embodiment, non-limiting examples is as described below:

Embodiment 1: shown in Figure 1, and aqueous vapor duplex type solar energy circulating system, its system is constructed as follows described:

A plurality of heat collectors 1 of series connection successively, referring to Fig. 2, each heat collector is made of heat-collecting box 11, support 12 and a plurality of thermal-collecting tube that is arranged side by side 13, thermal-collecting tube tilts to be installed on the support 12 and the upper end is communicated with heat-collecting box, on the connected mode of adjacent two heat collectors, the heat-collecting box 1 of last heat collector is communicated with by water pipe 2 with a plurality of thermal-collecting tubes 13 of next heat collector;

In the heat collector of a plurality of series connection successively, the heat-collecting box that wherein is in the heat collector of tail end is communicated with storage tank 3 tops, the a plurality of thermal-collecting tubes lower end that is in the heat collector of head end is communicated with the circulation pipe 4 that is communicated in the storage tank bottom, has promptly formed systemic circulation between the heat collector 1 of a plurality of like this series connection and the storage tank 3.

In order to promote and control the thermal cycle of whole system, circulation pipe is provided with the circulating pump 5 that is communicated with water supply network, and the circulation pipe between circulating pump and the storage tank is provided with first control valve 6, is provided with second control valve 7 in the porch of circulating pump.

Shown in Figure 3, thermal-collecting tube 13 is by as the metal tube 131 of inner bag be in the outer field double-layer glass tube 132 of metal tube and constitute, outer surface at metal tube 131 is coated with selective absorbing film, can improve the heat absorption efficiency of metal tube, in concrete the enforcement, the cross section of thermal-collecting tube or be circular or for oval or be other abnormity.

In the use, start circulating pump 5, first control valve 6 and second control valve 7, water supply network supplies water in heat collector and storage tank, second control valve 7 was closed after water supply was finished, cold water absorbs heat to heat up in thermal-collecting tube and flows in the next heat collector of series connection in the upper end flows into heat-collecting box and successively, the final inflow in the storage tank, the cold water pressurized of storage tank bottom flows in the thermal-collecting tube of the heat collector that is in system's head end once more through the effect of pump, so move in circles, hot and cold water forms systemic circulation in co-flow in whole system, improve cycle rate, improved heat utilization efficiency greatly.Reach when setting value when the temperature sensor in the storage tank 31 detects water temperature, first control valve 6 and circulating pump 5 are closed, otherwise then open.

When the user discharges water when using from storage tank, when level sensor 32 detected water level in the storage tank and is lower than setting value, second control valve 7 and circulating pump 5 were opened, water supply network moisturizing and flowing in the storage tank in each heat collector, until reaching setting value, second control valve 7 and the circulation pump.

In the concrete use, the present embodiment solar energy circulating system is adopted can be that water or gas or oil or other can be used to absorb the fluid media (medium) of solar energy.

Embodiment 2: present embodiment is with embodiment 1, different is, the thermal-collecting tube structure difference that each heat collector adopted shown in Figure 4, shown in Figure 5, the solar energy heat collection pipe of present embodiment, be by the metal tube 131 of both ends open ' and be socketed in the outer double-layer glass tube 132 of metal tube ' constitute, form vacuum between the double glazing, has the gap between inner layer glass and the metal tube, the withstand voltage properties of this kind pipe is stronger, Fig. 5 as can be seen, double-layer glass tube 132 ' connect outward and form by being socketed in metal tube by many root units pipe, glass tube has the structure of bamboo joint type, interconnects by connector 8 between each adjacent cells pipe, equally, metal tube 131 ' outer surface be coated with selective absorbing film 133.

Fig. 6,7 as can be seen, when specifically implementing, thermal-collecting tube can be set to circle or for oval or be other abnormity.

Shown in Figure 8, axis direction from thermal-collecting tube, it can be divided into two halves, promptly be in the part that the concave surface of bottom (faces south) up, with the concave surface that is in top part down, for improving the heat absorption efficiency of metal tube substantially, the inner surface of half that faces south at the double-layer glass tube inner layer glass is coated with silver or aluminium, with the reflecting layer 9 as the formation minute surface, after entering transparent glass tube top, sunlight shines on the reflecting layer 9, the sunlight layer that is reflected all reflexes in the shade of metal tube, can make metal tube be subjected to light on four sides, has improved collecting efficiency thereby strengthened light-receiving area.

Claims

1. aqueous vapor duplex type solar energy circulating system is characterized in that described system comprises:

A plurality of heat collectors (1) of series connection successively, each heat collector is made of the thermal-collecting tube (13) that heat-collecting box (11), support (12) and a plurality of upper end that is arranged side by side are communicated with heat-collecting box, in being provided with of adjacent two heat collectors, the heat-collecting box of last heat collector (11) is communicated with by water pipe (2) with a plurality of thermal-collecting tubes of next heat collector;

In the heat collector of a plurality of series connection successively, the heat-collecting box (11) that wherein is in the heat collector of tail end is communicated with storage tank (3) top, and a plurality of thermal-collecting tubes lower end that is in the heat collector of head end is communicated with the circulation pipe (4) that is communicated in the storage tank bottom;

Described circulation pipe (4) is provided with the circulating pump (5) that is communicated with water supply network.

2. aqueous vapor duplex type solar energy circulating system according to claim 1 is characterized in that the circulation pipe (4) between circulating pump (5) and the storage tank (3) is provided with first control valve (6), is provided with second control valve (7) in the porch of circulating pump.

3. aqueous vapor duplex type solar energy circulating system according to claim 1, it is characterized in that, described thermal-collecting tube (13) is by as the metal tube (131) of inner bag be in the outer field double-layer glass tube of metal tube (132) and constitute, and the outer surface of described metal tube is coated with selective absorbing film (133).

4. aqueous vapor according to claim 3 duplex type solar energy circulating system is characterized in that, the cross section of described thermal-collecting tube (13) or be circular or be ellipse.