CN2804724Y

CN2804724Y - Solar middle-high heat collecting pipe

Info

Publication number: CN2804724Y
Application number: CNU2005200712445U
Authority: CN
Inventors: 刘兆斌; 陈则绍
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-04-28
Filing date: 2005-04-28
Publication date: 2006-08-09
Anticipated expiration: 2015-04-28

Abstract

The utility model relates to a solar middle-high temperature heat collecting pipe. A metal pipe is arranged in a glass pipe. The metal pipe can form a screw shape, or a snake shape, or a straight pipe shape, or a shape of the combination of the straight pipe and a bending pipe, with various shapes. An inlet and an outlet of the metal pipe are positioned on the same end. Then, the inlet and the outlet of the metal pipe penetrate through a sealing cover body which is arranged on the open end of the glass pipe. Vacuum is contained in a glass cavity, and a spectral selectivity absorbing coating layer is covered on the outer wall of the metal pipe. A heat collecting plate can be arranged between the metal pipe and the inner wall of the glass pipe. The utility model can be used alone, and can also be used in the mode of a plurality of connection in parallel and in the connection in series. The utility model has high heat collecting performance, which can improve the temperature of media to above 200 DEG. In addition, the utility model can be widely applied to a plurality of fields and particularly requirements of industrial application can be satisfied by the utility model.

Description

High-temperature heat-collection pipe in the solar energy

Technical field

The utility model relates to technical field of solar energy utilization.Be particularly related to and utilize solar energy to promote the thermal-collecting tube of liquid medium to middle high temperature (more than 220 ℃).

Background technology:

Thermal-collecting tube is a critical component of collecting solar radiation heat energy, for example: the thermal-collecting tube of well-known solar water heater is released into water tank with the solar energy of collecting, and to make cold water become hot water supply civilian, such thermal-collecting tube belong to solar energy the low temperature utilization, be referred to as the low temperature thermal-collecting tube.This be because its existing structures shape its monomer thermal-arrest efficiency ratio lower, a certain amount of only tens degree of the temperature that can medium can reach that are subjected to, be up to 100 spend about.Generally can not satisfy the requirement that is subjected to the energy medium to have higher temperature, particularly can not satisfy the requirement that industrial circle is used.

Summary of the invention:

The utility model has proposed a kind of middle high-temperature heat-collection pipe at the problems referred to above, and purpose is to make it to have higher solar collecting performance, in the hope of satisfying application widely.

Technical solution of the present utility model:

The utility model comprises the glass tube of an end opening and is positioned at wherein the metal tube that is marked with working medium, the glass tube openend has the sealing of sealing lid, the glass tube chamber is a vacuum, and the import and export of metal tube extends outside the canals of stilling with passing the sealing lid, constitutes closed loop.The external topped spectrum selection absorbing coating that has of described metal tube can be provided with the thermal-arrest plate between metal tube and the glass tube inwall.

Beneficial effect

The utility model Heat-collecting effect is good, metal intraductal working medium quick heating reaches the temperature height, can make by conduction to be subjected to the abundant convection current of energy medium, to heat up through test(ing) medium can reach more than 200 ℃, and the utility model adopts metal tube to solve the problem that all-glass vacuum thermal-collecting tube can not pressure-bearing in addition.Thereby the utility model can not only satisfy civilian demand, more can reach the industrial circle application requirements.

Description of drawings:

Accompanying drawing 1 is the structural representation of the utility model basic structure embodiment one;

Accompanying drawing 2 is the structural representation of the utility model embodiment two;

Accompanying drawing 3 is the structural representation of the utility model embodiment three;

Accompanying drawing 4 comprises thermal-arrest plate structure schematic diagram for the utility model;

Accompanying drawing 5 is the structural representation of parallel way for a plurality of the utility model;

Accompanying drawing 6 is the also structural representation of series system for a plurality of the utility model;

The specific embodiment:

Embodiment one: as shown in Figure 1: be provided with metal tube 2 in the glass tube 1, this metal tube can be spirality, snake bend, straight tube or straight, kinking close shape, and the cross section of body can be that circular, oblate, rectangle or other are polygon-shaped, the import and export of metal tube 2 is with the end cap 4 that passes as the sealing lid, this end cap liner sealing gasket 3, internal ring wall are provided with the screw thread (not shown), and this screw thread cooperates for screwing with glass tube 1 mouth of pipe external screw thread.Also be provided with bleeding point 10 on the end cap 4, it communicates with glass tube 1 cavity, when vacuumizing, treat etc. that vacuum reaches about the 10-3 handkerchief in the glass tube, bleeding point 10 seals, and seals with fluid sealant 8 again with glass tube outer wall contact position at the lid mouth of end cap.

Embodiment two: as shown in Figure 2, corresponding toly with a last embodiment be, in glass tube 1, be provided with the identical metal tube of structure 2 equally, different is, be flange plate structure (also adding sealing ring) as the sealing lid, and ring flange 5 is provided with heatproof pad 9 with glass tube 1 mouth of pipe junction, also be provided with bleeding point 10 on the ring flange 5, need equally the cavity of glass tube 1 is vacuumized.

Embodiment three: as shown in Figure 3, present embodiment and embodiment two have more something in common, its sealing lid also is a flange plate structure, and difference is that it is not to be tightly connected with screw, nut shimming 9, but with the metal copper wire with ring flange and glass mouth of pipe hot-press sealing.

Embodiment four: as shown in Figure 5, a plurality of the utility model are done and the connection shape, the output that is about to their metal tube inserts a heated medium container simultaneously, input inserts another heated medium container simultaneously again, realize obtaining the equality of temperature thermal output from several the utility model simultaneously, satisfy the heat request of using of different user.

Embodiment five: as shown in Figure 6, a plurality of the utility model are made the serial connection shapes, the output that is about to the utility model metal tube connects the input of another the utility model metal tube, forms longer closed-loop path with this and conducts heat to and be subjected to the heat energy medium.

The metal tube 2 of above embodiment in glass tube 1 all with metal spring folder 6 fixing and in glass tube, be placed with getter 7, metal tube 2 outer walls are coated with spectral selective absorbing coating 12.And for example shown in Figure 4, when metal tube 2 is provided with thermal-arrest plate 11 between straight tube shape, metal tube 2 and the glass tube, when metal tube is other shape,, all can add the thermal-arrest plate as long as the glass tube cavity space allows.

To sum up, with the utility model monomer or and series connection place and be subjected in the heat energy medium, can inject inhomogeneous working medium with heat request according to different in the metal tube, working medium flows in the metal tube of various forms, in weaving, obtain heat, conduction is given and to be subjected to the heat energy medium in the container, reaches the purpose that promotes medium temperature.The utility model can promote medium temperature through test and reach more than 220 degree, can satisfy the requirement that industrial circle is used, and has reached goal of the invention.

Claims

1, high-temperature heat-collection pipe in a kind of solar energy, it is characterized in that: it comprises the glass tube (1) of an end opening and is positioned at wherein the metal tube that is marked with working medium (2), the glass tube chamber is a vacuum body, the openend of glass tube is provided with the sealing of sealing lid, the import and export of metal tube (2) is external with passing seal cover and extending to glass tube (1), constitutes closed loop.

2, high-temperature heat-collection pipe in the solar energy according to claim 1, the metal body (2) that it is characterized in that it can be that spirality, snake bend, straight tube or straight, kinking close shape, and the cross section of body can be circular, oblate.

3, high-temperature heat-collection pipe in the solar energy according to claim 1, the sealing lid that it is characterized in that it can be the end cap (5) that adds sealing ring (3) and comprise internal thread, and the internal thread of end cap (5) cooperates for screwing with the external screw thread of glass tube, can be that the flange disk body (4) that is added with sealing ring (3) connects with screw, can be with the metal copper wire ring flange to be connected with the hot sealing of the glass mouth of pipe.

4, according to high-temperature heat-collection pipe in claims 1 or the 2 described solar energy, it is characterized in that: the outer topped spectral selective absorbing coating (12) that has of its metal tube (2).

5, according to high-temperature heat-collection pipe in claims 1 or the 2 described solar energy, it is characterized in that: when metal tube (2) is straight tube shape, between metal tube (2) and glass tube (1) inwall, be provided with thermal-arrest plate (11), and in the metal tube, as long as the space allows, all can add the thermal-arrest plate.

6, according to high-temperature heat-collection pipe in claim 1 or the 3 described solar energy, it is characterized in that: after vacuumizing, the lid mouth is equipped with fluid sealant (8) with glass tube outer wall contact position as the end cap (5) that seals lid; Ring flange (4) as the sealing lid is provided with heatproof pad (9) with glass mouth of pipe screw junction.

7, high-temperature heat-collection pipe in the solar energy according to claim 1 is characterized in that: its sealing lid (4,5) is provided with the bleeding point (10) that communicates with glass tube (1) cavity.

8, high-temperature heat-collection pipe in the solar energy according to claim 1 is characterized in that: it can be a plurality of also, application is connected in series.