CN102778057A

CN102778057A - Solar collector tube with concentric metal double inner tube

Info

Publication number: CN102778057A
Application number: CN2012102509943A
Authority: CN
Inventors: 王宝根
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-07-16
Filing date: 2012-07-16
Publication date: 2012-11-14

Abstract

The invention relates to a solar collector tube with a concentric metal double inner tube, composed of an outer glass tube, and an inner tube sleeved in the glass outer tube, wherein the inner tube is a metal tube with a double-layer structure; an outer layer tube has two closed ends; the inner layer tube has openings on two ends; the inner layer tube is inserted into the outer layer tube; an opening on a lower end of the inner layer tube is communicated with interior of an outer layer tube; an end of the inner metal tube extends out of the outer glass tube, and then is inserted into an unite water tank; a water inlet tube and a water outlet pipe are arranged longitudinally in the unite water tank; the opening on an upper end of the inner layer tube is the inlet which is communicated with the water inlet tube; a side of a part of the outer layer tube extending out of the outer glass tube is provided with an outlet, the outlet is communicated with the water outlet tube, so that water or air flows into through the inlet, and flows out from the outlet to be heated circularly. According to the invention, the defects of the existing heat collectors are overcome; a solar collector tube which is provided with the concentric metal double inner tube and which is used for the heat collectors; and the solar collector tube has the advantages of simple manufacturing technology, quick start-up speed, reliability of service, wide heat absorbing area, high efficiency of heat utilization and long service life.

Description

The solar energy heat collection pipes of pipe in concentric metal is two

One, technical field

The present invention relates to a kind of solar energy heat collection pipe, especially a kind of be used for heat collector in have concentric metal two in the solar energy heat collection pipes of pipe.

Two, background technology

At present, solar energy heat collection pipe generally is the sealing of an end opening one end, i.e. blind pipe.The density contrast that the natural recirculating type hot-water heating system of being made up of them often relies on the different generations of water temperature in heat collector and the water storage box carries out temperature difference circulation (thermosyphon circulation), and its water circulating speed is not high, and heat utilization efficiency is not high.

The inner and outer pipes and the junction of the vacuum solar heat-collecting pipe that generally uses at present are glass; Inner and outer pipes is evacuated between the inner and outer pipes for being rigidly connected, and whole pipe is as a glass liner of a thermos flask that ten minutes is elongated; This thermal-collecting tube is because the inner and outer pipes temperature difference and processing technology are easy to generate booster; Need make with the very little heat resistant glass of thermal coefficient of expansion, technology is complicated, and cost is high.

Though be coated with coating to improve the absorptivity to solar radiation at interior tube-surface, pipe is interior not to have reflection, beam condensing unit, and because there is infrared emanation in the interior high-temp liquid of pipe, it is bigger to the extraradial thermal losses of thermal-collecting tube, makes the solar thermal utilization rate not high.

Three, summary of the invention

The objective of the invention is to solve the deficiency of above-mentioned existing heat collector; Provide a kind of be used for heat collector in have concentric metal two in the solar energy heat collection pipes of pipe, make its have manufacturing process simple, start fast, use reliable, endotherm area is wide, heat utilization efficiency is high and characteristics such as long service life.

The objective of the invention is to adopt following scheme to realize: the solar energy heat collection pipe of pipe in a kind of concentric metal is two; Constitute by glass outer tube and the interior pipe that is enclosed within the glass outer tube; Be characterized in: pipe is double-deck metal tube inside and outside having in said; Its outer tube closed at both ends, the inner tube both ends open, inner tube is inserted interior its lower ending opening of outer tube and is communicated with outer tube is interior; Metal inner pipe one end inserts in the couplet header tank after stretching out the glass outer tube; The water inlet pipe and the outlet pipe that are provided with are up and down arranged in the said header tank, and the inner tube open upper end is that import is communicated with water inlet pipe, and the side that outer tube is stretched out the glass outer tube part has outlet; It is communicated with outlet pipe; So that water or air are got into by import, flow out from outlet, realize the circulation heating.

The outer pipe internal surface of above-mentioned glass has the reflectance coating of semicircular arc towards the part of the sun, above-mentioned glass outer tube and the eccentric setting of metal inner pipe, and metal inner pipe is positioned at focusing place of reflectance coating, will shine sunshine reflect focalization on the reflectance coating in metal inner pipe; On the outer tube inwall of above-mentioned metal inner pipe enamel layer is arranged, can prevent effectively that the infra-red radiation in the metal inner pipe from leaking outside; The enamel solar absorbing film is arranged on the outer tube outer wall, can fast and effeciently absorb the solar energy that shines on the metal inner pipe.

Above-mentioned outer tube and inner tube be with to join header tank fixing through being threaded, and the following conical surface with the dress sealing ring of screw thread connects, and makes with the water tank junction seamlessly, prevents the generation of leaking.

The outer tube inwall of above-mentioned metal inner pipe also is provided with the muscle that a circle is evenly arranged around circumference, and the intensity of pipe in it can be strengthened can make the contact area of the water in the outer tube and tube increase again, improves the efficiency of heating surface.

The setting of above-mentioned outer tube outer wall enameling can also make when the glass outer tube is connected fixedly with metal inner pipe, only needs its contact site of high-frequency heating, just can enamel be dissolved in its contact site, makes it airtight seamless; Said enamel can also be glass dust, and glass dust has microwave absorbing material, can absorb microwave, only needs high-frequency heating or its contact site of heating using microwave, just can enamel be dissolved in its contact site, makes it airtight seamless.

The present invention adopts the beneficial effect of such scheme to be: the 1) metal inner pipe of the effective band muscle of this solar energy heating; Can effectively prevent the breakage of metal inner pipe, make it not fragile, long service life; The contact area of the interior water of metal inner pipe and pipe is increased, improve the efficiency of heating surface; 2) setting of pipe internal reflection film, and interior pipe is eccentric to be provided with, and makes solar focusing in interior pipe, improves collecting efficiency; 3) setting of two interior pipes with one heart makes metal inner pipe at same end two openings can be set, and just can circulate in the pipe, makes it can be used for running water circulation heating or air circulation heating.

Four, description of drawings

Fig. 1 is the three-dimensional structure diagram that the solar energy heat collection pipe of the two interior pipes of concentric metal is arranged in the present invention;

Fig. 2 is the A-A cutaway view among Fig. 1;

Fig. 3 is the three-dimensional structure diagram when inner tube is connected with the couplet header tank among the present invention;

Fig. 4 is an ectomesoderm Guan Yulian header tank of the present invention three-dimensional structure diagram when connecting.

Label declaration in each width of cloth accompanying drawing is following:

1-joins header tank; The 1a-water inlet pipe; The 1b-outlet pipe; 1c, 1e-internal thread; 1d, 1f-inner conical surface; 2-glass outer tube; The 3-outer tube; The 3a-import; The 3b-muscle; The 3c-external screw thread; The 3d-sealing ring; The 3e-male cone (strobilus masculinus); The 4-inner tube; The 4a-outlet; The 4a-external screw thread; The 4b-sealing ring; The 4c-male cone (strobilus masculinus); 5-enamel solar absorbing film; The 6-enamel layer; The 7-reflectance coating.

Five, the specific embodiment

Below in conjunction with accompanying drawing the present invention is had in a kind of concentric metal two in the specific embodiment of solar energy heat collection pipes of pipe describe in detail.

As shown in Figure 1, the solar energy heat collection pipe of pipe in a kind of concentric metal is two, it is made up of glass outer tube 2 and the metal inner pipe that is enclosed within the glass outer tube 2.

As shown in Figure 1, metal inner pipe has interior outer double-layer structure, promptly comprises outer tube 3 and the inner tube 4 that is enclosed within the outer tube 3.

As shown in Figure 2, outer tube 3 inwalls also are provided with the muscle 3b that a circle is evenly arranged around circumference, and muscle 3b can strengthen the intensity of outer tube 3, and the contact area of the water in making outer tube 3 again and managing increases, and improves the efficiency of heating surface.

Outer tube 3 closed at both ends, inner tube 4 both ends opens, inner tube 3 is inserted its lower ending opening and 3 interior connections of outer tube in the outer tube 4, and metal inner pipe one end stretches out the 2 back insertions of glass outer tube and joins in the header tank 1.Join water inlet pipe 1a and the outlet pipe 1b that is provided with up and down arranged in the header tank 1; Inner tube 4 open upper end are that import 4a is communicated with water inlet pipe 1a; The side that outer tube 3 is stretched out glass outer tube 2 parts has outlet 3a, and it is communicated with outlet pipe 1b, so that water or air are got into by import 4a; 3a flows out from outlet, realizes the circulation heating.

As shown in Figure 2; Glass outer tube 2 inner surfaces have the reflectance coating 7 of semicircular arc towards the part of the sun; Glass outer tube 1 is provided with metal inner pipe is eccentric, and metal inner pipe is positioned at focusing place of reflectance coating 7, will shine sunshine reflect focalization on the reflectance coating 7 in metal inner pipe.

As shown in Figure 1, on outer tube 3 inwalls of metal inner pipe one deck enamel layer 6 is arranged, can prevent effectively that the infra-red radiation in the metal inner pipe from leaking outside.On the outer wall of outer tube 3, also be provided with enamel solar absorbing film 5; Can fast and effeciently absorb the solar energy that shines on the metal inner pipe; Simultaneously, at glass outer tube 2 with metal inner pipe fixedly the time, its contact site of need high-frequency heating only; Just can enamel material be dissolved in its contact site, make it airtight seamless; Enamel on the outer wall of said outer tube 3 can also be glass dust, and glass dust has microwave absorbing material, can absorb microwave, only needs high-frequency heating or its contact site of heating using microwave, just can enamel be dissolved in its contact site, makes it airtight seamless.

Like Fig. 3, shown in 4, outer tube 3 is fixing through being threaded with couplet header tank 1 with inner tube 4.On water inlet pipe 1a that joins header tank 1 and outlet pipe 1b, be provided with internal thread (1c, 1e), inner conical surface (1d, 1f) be set below the internal thread (1c, 1e).Accordingly, be provided with external screw thread (3c, 4a), male cone (strobilus masculinus) (3e, 4c) be set below the external screw thread (3c, 4a), sealing ring (4b, 3d) is housed on the male cone (strobilus masculinus) (3e, 4c) at outer tube 3 and inner tube 4 upper end ports.

During connection, the internal thread 1c on the water inlet pipe 1a and the external screw thread 4a of inner tube 4 are meshing with each other, and the inner conical surface 1d on the water inlet pipe 1a and the male cone (strobilus masculinus) 4c of inner tube 4 seal through sealing ring 4b each other, make its junction seamless, can prevent the generation of leaking.

In like manner, the internal thread 1f on the outlet pipe 1b and the external screw thread 3c of outer tube 3 are meshing with each other, and the inner conical surface 1f on the outlet pipe 1b and the male cone (strobilus masculinus) 3e of outer tube 3 seal through sealing ring 3d each other, make its junction seamless, can prevent the generation of leaking.

Claims

A concentric metal two in the solar energy heat collection pipes of pipe; Constitute by glass outer tube (2) and the interior pipe that is enclosed within the glass outer tube (2); It is characterized in that: pipe is double-deck metal tube inside and outside having in said; Its outer tube (3) closed at both ends, inner tube (4) both ends open, inner tube (4) is inserted interior its lower ending opening of outer tube (3) and is communicated with outer tube (3) is interior; Metal inner pipe one end stretches out glass outer tube (2) back and inserts in the couplet header tank (1); The water inlet pipe (1a) and the outlet pipe (1b) that are provided with are up and down arranged in the said header tank (1); Inner tube (4) open upper end is that import (3a) is communicated with water inlet pipe (1a); The side that outer tube (3) is stretched out glass outer tube (2) part has outlet (4a), and it is communicated with outlet pipe (1b).
2. the solar energy heat collection pipe of pipe in concentric metal according to claim 1 is two; It is characterized in that: said glass outer tube (2) inner surface has the reflectance coating (7) of semicircular arc towards the part of the sun; Said glass outer tube (2) and metal inner pipe are eccentric to be provided with; Metal inner pipe is positioned at focusing place of reflectance coating (7), will shine sunshine reflect focalization on the reflectance coating (7) in metal inner pipe; On the outer tube of said metal inner pipe (3) inwall enamel layer (6) is arranged, can prevent effectively that the infra-red radiation in the metal inner pipe from leaking outside; On outer tube (3) outer wall, enamel solar absorbing film (5) is arranged, can fast and effeciently absorb the solar energy that shines on the metal inner pipe.
3. the solar energy heat collection pipe of pipe in concentric metal according to claim 1 is two, it is characterized in that: said outer tube (3) and inner tube (4) are fixing through being threaded with couplet header tank (1), and the following conical surface with dress sealing ring (3d) of screw thread connects.
4. the solar energy heat collection pipe of pipe in concentric metal according to claim 1 is two is characterized in that: the outer tube of said metal inner pipe (3) inwall also is provided with the muscle (3b) that a circle is evenly arranged around circumference.