CN205261958U - High -efficient solar energy vacuum tube - Google Patents

Abstract

The utility model belongs to solar energy utilizes the equipment field, relates to the solar energy vacuum tube, especially relates to a high -efficient solar energy vacuum tube and processing technology. Including outer glass pipe and interior glass pipe, the inner glass tube suit outside glass intraductal, it has the fine hair that is used for absorbing the solar radiation ability to bond on the inner glass tube outer wall. Compared with the prior art, the utility model discloses an advantage lies in with positive effect, the utility model discloses a change the structure of traditional solar energy vacuum tube to have the fine hair that absorbs solar radiation ability function and replace traditional spectral selectivity absorbing coating, make the sunlight produce the diffuse reflection between fine hair, solved the most problem that is reflected of traditional sunlight, improved the absorption rate of light energy, simultaneously, through add a certain proportion of metal powder in the gluing agent, further improve its absorption rate, and then solve the problem of the endothermic inefficiency of traditional solar energy vacuum tube.

Description

High-efficiency solar vacuum tube

Technical field

The utility model belongs to field of solar utilizing equipment, relates to solar energy vacuum tube, relates in particular to oneHigh-efficiency solar vacuum tube.

Background technology

Along with non-renewable resources by the mankind constantly, exploit more and more in a large number, its reserves reduce gradually,What have is soon exhausted. Compared with the formation speed of non-renewable resources and the development of human society, its formationVery slow, compared with other resource, its reproduction speed is very slow, or almost can not regenerate. Therefore, the mankindTo the development and utilization of non-renewable resources, only can consume, and can not keep its original reserves or regeneration.Along with the continuous consumption of non-renewable resources, the mankind more and more recognize energy crisis on the horizon, with stoneThe oil energy is example, shows according to national interrelated data, and Petroleum Reserve of China amount only accounts for 2% of the whole world, expertEstimate that global existing oil reserve amount only can maintain the consumption about 100 years, and if existing consumption is pressed by ChinaAmount, less than 50 years domestic crude resources by approach exhaustion. Therefore, tap a new source of energy and become reply energy crisisOnly selection.

Therefore, constantly gush taking solar energy, wind energy, living resources as the mode of utilizing of the regenerative resource of representativeExisting, taking solar energy as example, the products such as existing solar water heater, solar electric vehicle are exactly human useThe crystallization of solar energy, solar energy vacuum tube is the main core component that solar water heater utilization gathers sunshine.Solar energy vacuum tube generally comprises glass outer tube and inner tube, on the outer wall of inner tube, is coated with coating for selective absorption,Between inner and outer pipe interlayer by aspirating into high vacuum state. When sunshine is irradiated to inner tube by outer glass pipeOn absorber coatings, be converted to heat energy, the heat-transfer fluid in heating inner tube. Common existing solar energy vacuum tubeOuter tube be transparent glass material, but the sunshine irradiating on inner pipe by outer tube only has 50% absorptionRate, because always there is on inner pipe the shady face of half not have light to irradiate, in inner tube, coating also can affect in additionTo the absorption of luminous energy, after solar light irradiation, coating can reflect a large amount of sunshines, has reduced thus inner tubeThe ability that absorbs solar radiation, can not be fully played the heat absorption efficiency of solar energy vacuum tube, outstandingIt is northerly winter, and the utilization rate of solar energy is lower, and people can only rely on electrothermal water heater to take a shower.

Utility model content

The utility model, for technical problems such as above-mentioned solar energy vacuum tube heat absorption efficiency are low, proposes one and establishesCount high-efficiency solar vacuum tube and processing thereof reasonable, simple in structure, easy to process and that solar energy utilization ratio is highTechnique.

In order to achieve the above object, the technical solution adopted in the utility model is that it is a kind of high that the utility model providesEfficiency solar vacuum tube, comprises outer glass pipe and inner glass tube, and described inner glass tube is sleeved on outer glass pipeIn, on described inner glass tube outer wall, be bonded with the fine hair for absorbing solar radiant energy.

As preferably, described fine hair gathers uniformly on inner glass tube outer wall.

As preferably, described fine hair is vertically set on inner glass tube outer wall.

As preferably, the material of described fine hair is carbon fiber, black glass fiber or ferrous metal fiber.

As preferably, described fine hair is bonded on inner glass tube outer wall by adhesive.

As preferably, described adhesive is heat conductive silica gel.

As preferably, the length of described fine hair is 1mm～10mm.

Compared with prior art, advantage of the present utility model and good effect be,

1, the utility model is by changing the structure of traditional solar energy vacuum tube, to have absorption solar radiant energyThe fine hair of function substitutes traditional spectral selective absorbing coating, makes sunshine between fine hair, produce diffuse reflection,Solved the problem that traditional sunshine major part is reflected, improved the absorptivity of luminous energy, meanwhile, byIn adhesive, add a certain proportion of metal dust, further improve its absorptivity, and then solve traditional sunCan the inefficient problem of vacuum tube heat absorbing.

Brief description of the drawings

In order to be illustrated more clearly in the technical scheme of the utility model embodiment, in describing embodiment belowThe accompanying drawing of required use is briefly described, and apparently, the accompanying drawing in the following describes is this practicalityNovel some embodiment, for those of ordinary skill in the art, are not paying creative workUnder prerequisite, can also obtain according to these accompanying drawings other accompanying drawing.

The structural representation of the high-efficiency solar vacuum tube that Fig. 1 provides for embodiment 1;

Fig. 2 is for the cutaway view of 1 inner glass tube providing is provided;

Above in each figure, 1, outer glass pipe; 2, inner glass tube; 3, gluing layer; 4, fine hair.

Detailed description of the invention

In order more clearly to understand above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with attachedFigure and embodiment are described further the utility model. It should be noted that, in the situation that not conflicting,Feature in the application's embodiment and embodiment can combine mutually.

Set forth in the following description a lot of details so that fully understand the utility model, still,The utility model can also adopt and be different from other modes described here and implement, therefore, and the utility modelBe not limited to the restriction of the specific embodiment of prospectus below.

Embodiment 1, as shown in Figure 1 and Figure 2, the present embodiment provides a kind of high-efficiency solar vacuum tube, comprisesOuter glass pipe and inner glass tube, inner glass tube is sleeved in outer glass pipe, the shape of solar energy vacuum tube andStructure is consistent with the common solar energy vacuum tube on market, has just removed on traditional inner glass tube outer wallSpectral selective absorbing coating, connects by hermetically-sealed construction between the inwall of outer glass pipe and the outer wall of inner glass tubeConnect, between the inwall of outer glass pipe, the outer wall of inner glass tube and hermetically-sealed construction, form vacuum chamber; Wherein,Outer glass pipe has translucidus, is bonded with the fine hair for absorbing solar radiant energy on the outer wall of inner glass tube.

By above-mentioned setting, on the outer wall of inner glass tube, bonding has the fine hair that absorbs solar radiant energy,Utilize bionics principle, make between fine hair, to form diffuse reflection by the sunshine of outer glass pipe, reduce reflection,And then the absorptivity of raising sunshine.

In order further to improve the absorptivity of solar energy vacuum tube, fine hair is gathered uniformly at interior glassOn pipe outer wall, the distribution of fine hair will keep certain compactness, determines and detects by an unaided eye, and does not see it as far as possibleFine hair shape on the outer wall of inner glass tube.

In order to reduce the reflectivity of fine hair, in the present embodiment, fine hair is vertically set on to inner glass tube outer wallUpper, by above-mentioned setting, between fine hair and fine hair, be arranged in parallel, can guarantee that like this light comes between fine hairBack reflective, and then reduced the reflectivity of fine hair, certainly, in process, can not accomplish all to hang downStraight setting, therefore the utility model is claimed is not only vertical setting.

In order to improve the absorptivity of fine hair, make fine hair can absorb to the full extent solar radiant energy, therefore at thisIn embodiment, the material of fine hair is carbon fiber or black glass fiber or ferrous metal fiber, adopts these three kindsThe fine hair of material can better absorb solar radiant energy, certainly, is specifically adding man-hour, can be these three kindsThe mixing between two of material can be also the mixing of three kinds of materials.

In order to ensure the up rightness of fine hair and to improve its heat conduction efficiency, therefore in the present embodiment, fine hair is logicalCross adhesive and be bonded on inner glass tube outer wall, wherein adhesive is heat conductive silica gel, and adhesive is specificallyHave good heat conductive performance and resistant to elevated temperatures heat conductive silica gel, in particular, adhesive is blending 3% to 50%Aluminium powder or the single powder such as copper powder, silver powder, Graphene or mixed-powder there is good heat conductive performance and resistance toThe heat conductive silica gel of high temperature, the use of adhesive makes it on inner glass tube, forms one deck gluing layer, and fine hair isGather uniformly on gluing layer.

Consider the heat-conducting effect of fine hair, therefore that the length of fine hair is difficult for is long, the inner glass tube outer wall of as far as possible fitting,Therefore, the length of fine hair should be controlled between 1mm～10mm, preferably 5mm.

When concrete production, be first ready to length at 1mm to thering is absorption solar radiant energy between 10mmFine hair, these fine hair can be carbon fiber fine hair, black glass fibre fluff, ferrous metal fibre fluff,Also can be the mixture of above-mentioned these fine hair, then these fine hair are with to electric treatment, specifically make electricity consumptionAgent these fine hair are with to electric treatment, after handling, for subsequent use.

Then, by one end fried mouth of inner glass tube, burn mouthful, annealing, other end sealing is blow molded into semicircle shape,Blunt end wall thickness >=1.2mm, annealing; Inner glass tube is sent into drying baker after cleaning dries, anti-by deionized waterWash again the outer wall of inner glass tube by rubbing with the hands, be respectively charged in inner tube fixture vehicle, then clean with purified rinse water, inAfter glass tube cleaning, sending into drying baker dries.

The outer wall upper surface of the inner glass tube after drying is smeared to upper adhesive uniformly, and adhesive adopts blendingThe single powder such as 3% to 50% aluminium powder or copper powder, silver powder, Graphene or mixed-powder there is good heat conductivePerformance and resistant to elevated temperatures heat conductive silica gel, after having smeared on the outer wall of inner glass tube, by the fine hair of handling wellAs in electrostatic field, fine hair polarizes under electric field action with inner glass tube, forms electric polarity, charged fine hairIn electric field, circle in the air, due to the effect of electric field force, originally disorderly unordered fine hair rotates around direction of an electric field, and finalBe parallel to power line direction, make fine hair do upright orientation motion, rely on electric field force and vertical implantation scribbles binding agentThe outer wall of inner glass tube on, after inner glass tube flocking completes, be placed on one side, stand-by.

By outer glass pipe one end fried mouth, burn mouthful, annealing, welding Ф 10*80 after other end sealing, blowing round endTail pipe, annealing; Repeatedly wash by rubbing with the hands and look for outer glass pipe outer wall with deionized water and cleaning agent, then insert outer glassIn plumber's entrucking, send into drying baker; Stainless with nonevaporable getter agent will be put in outer glass pipe blunt end inwallSteel spring card is stand-by;

Inner glass tube after flocking is completed inserts in outer glass pipe inner chamber, completes the combination of solar energy vacuum tube;Solar energy vacuum tube after combination is carried out to sealing operation, specifically sealing part is carried out after the pre-heat treatment envelopePort part carries out heat treated, and then opening oxygen adjustment heating flame color is navy blue, by graphite cakeMake inner glass tube and outer glass pipe fusion, fusion wall thickness >=2mm, turns off oxygen after being disposed and moves backFire is processed, and this annealing in process temperature is 450-700 DEG C, after annealing, carries out qualitative detection with stress ga(u)ge,Certified products are without obvious yellow, blue stress concentration point.

Solar energy vacuum tube after sealing carries out bubbling operation, to obtain described expansion joint and to anneal,Bubbling method of operating is by heating gradually after the preheating of pipe shaft outer wall, approaches molten condition until pipe shaft glass reddens,Pipe shaft fusing place is slowly heaved with pneumatic equipment, the solar energy vacuum tube after being disposed, exhaust vacuumizesThen burn tail pipe with the high temperature of 800-1000 DEG C, the round end place of burning the solar energy vacuum tube after tail pipe sealsBreak and process and carry out obtaining solar energy vacuum tube finished product after annealing in process, the disconnected processing of envelope is by solar energy vacuum tubeBe placed on the disconnected lathe of envelope, under 800-1200 DEG C of high temperature, at downward 120-180mm place of vacuum tube round end placeEnvelope is disconnected to be processed, and so far, high-efficiency solar vacuum tube machines.

The above, be only preferred embodiment of the present utility model, is not that the utility model is done to itThe restriction of its form, the technology contents that any those skilled in the art may utilize above-mentioned announcement in additionThe equivalent embodiment changing or be modified as equivalent variations is applied to other field, but does not everyly depart from this practicalityNew technique scheme content, that according to technical spirit of the present utility model, above embodiment is done is any simpleAmendment, equivalent variations and remodeling, still belong to the protection domain of technical solutions of the utility model.

Claims (7)

1. a high-efficiency solar vacuum tube, comprises outer glass pipe and inner glass tube, described inner glass tube coverBe contained in outer glass pipe, it is characterized in that, on described inner glass tube outer wall, be bonded with for absorbing solar radiant energyFine hair.

2. high-efficiency solar vacuum tube according to claim 1, is characterized in that, described fine hair is evenGather on inner glass tube outer wall.

3. high-efficiency solar vacuum tube according to claim 2, is characterized in that, described fine hair is verticalBe arranged on inner glass tube outer wall.

4. high-efficiency solar vacuum tube according to claim 3, is characterized in that, the material of described fine hairMatter is carbon fiber, black glass fiber or ferrous metal fiber.

5. according to the high-efficiency solar vacuum tube described in claim 1～4 any one, it is characterized in that, described inFine hair is bonded on inner glass tube outer wall by adhesive.

6. high-efficiency solar vacuum tube according to claim 5, is characterized in that, described adhesive isHeat conductive silica gel.

7. high-efficiency solar vacuum tube according to claim 6, is characterized in that, the length of described fine hairDegree is 1mm～10mm.