CN103591702A

CN103591702A - Disc solar furnace

Info

Publication number: CN103591702A
Application number: CN201310520250.3A
Authority: CN
Inventors: 汪禹
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-28
Filing date: 2013-10-28
Publication date: 2014-02-19

Abstract

The main purpose of the existing solar heat collection technology is to solve the problem that increasing generating heat cycle efficiency to further increase medium parameters causes difficulty in reliable connection between a collector and an external medium system and reduction in cost of unit generating capacity. The invention discloses a disc solar furnace (disc heat collector) mainly comprising a condensing disc, a reflecting cap, a plane mirror, a black cavity, a support arm, an elevation tracking device, a horizontal tracking device, a plane mirror drive mechanism, a support and a base. The center of the condensing disc is provided with a window admitting passage of light. The reflecting cap turns condensed light from the condensing disc into parallel condensed beams and transmits the beams to the plane mirror, and the plane mirror reflects the beams to the black cavity. The plane mirror at the lower end of the support arm is hinged to the support arm. The plane mirror drive mechanism automatically adjusts rotation angle of the plane mirror according to changes in elevation of the condensing disc when the condensing disc tracks the sun, and therefore, the fact that the reflected beams from the plane mirror are aligned with the black cavity is ensured.

Description

Dish formula solar furnace

Technical field

The invention belongs to the solar energy heat utilization technology in new forms of energy or renewable energy source domain, be mainly used in solar light-heat power-generation, heat supply, distributed energy, family expenses or portable type solar energy cooking stove etc.

Background technology

Solar power generation and heat collection technology mainly contains four major types at present: slot type, dish formula, tower and Fresnel, this Four types is all focusing solar collector.Wherein slot type and Fresnel heat collector are line focus, and technology is very ripe at present, and cost is also relatively low, but optically focused is than not high enough, is difficult to realize the HTHP of medium parameter, thereby cannot further improve the efficiency of cycle of generating.Tower-type heat collector is point focusing, can reach very high optically focused ratio, realize the HTHP of medium parameter, but tower-type heat collector optically focused distance is far, and the scattering of light beam easily occurs, and cost is very expensive.Dish formula heat collector is also point focusing, also can reach very high optically focused ratio, realize very high medium temperature, and do not exist optically focused distance that the problem of scattering far occurs, but dish formula heat collector must adopt two-dimensional tracking (or claiming double-axis tracking), and focus, in dynamically, is difficult to reliably be connected with external agency system, therefore be generally used in conjunction with (generating set follow focus together with move) with Stirling engine, unit capacity cost is more high.In addition, consider stability and the quality of power supply of solar electrical energy generation, solar-thermal generating system generally also will adopt heat accumulation and second heat switch thereof, and the economy of solar energy thermal-power-generating is further given a discount.Family expenses or general industry heat utilization technology mainly contain multitube and flat two large types, and cost is more cheap, but efficiency of utilization is lower, is also difficult to realize round-the-clock stable heating.

Technical background reference:

Above background technology can be with reference to current solar energy thermal-power-generating technology, the architectural feature of slot type, dish formula, tower and luxuriant and rich with fragrance Neil formula solar thermal collector and system thereof, family expenses multitube, flat type solar heat collector.

Summary of the invention

Current solar energy heating technology is mainly will solve as the raising generating efficiency of cycle further improves medium parameter to cause heat collector to be difficult to reliable connection with external agency system, and reduces the problem of the cost of unit generate output.

The invention describes a kind of dish formula solar furnace (being a kind of dish formula heat collector), mainly by optically focused dish, reflection cap, plane mirror, black chamber, support arm, elevation angle tracking means, horizontal tracking means, level crossing transmission mechanism, bearing and base, formed.Optically focused dish and reflection cap are the paraboloid of revolution, and concave surface is speculum.The effect of optically focused dish is that parallel sunray (SL) is gathered to reflection cap.Optically focused dish center has window, and the upper end of the support arm of arranging in Yu Yan axis, the edge of window is fixed.The horizontal tracking means on support arm and bearing top is hinged, and its hinge member is with elevation angle tracking means.Reflection cap is positioned on the axis of optically focused dish, the outside of focus, and the opening of the two in opposite directions, focus overlaps, and by rod-shaped scaffold, is fixed on optically focused dish.The effect of reflection cap is that in the future the focused beam (SLF) of autohemagglutination laser disc becomes parallel gathering light beam (SLF) and reflexes on plane mirror.Plane mirror is positioned at the lower end of support arm hinged with it, between this hinge member and the hinge member with elevation angle tracking means, is provided with level crossing transmission mechanism.The effect of plane mirror is that the light beam (SLF) of self-reflection cap in the future reflexes in black chamber.Optically focused dish is followed the tracks of the solar time, does respectively that level is followed the tracks of and follow the tracks of at the elevation angle by horizontal tracking means and elevation angle tracking means.Under the promotion of elevation angle tracking means, the elevation angle of condenser changes, at this moment by level crossing transmission mechanism, according to the elevation angle of optically focused dish, change the corner of adjustment plane mirror automatically and (according to angle of reflection, equal the principle of incidence angle, the corner variable quantity of plane mirror should equal half of elevation angle variable quantity of optically focused dish), to guarantee that the folded light beam (SLF) of plane mirror aims at black chamber.

Optically focused dish can be made into fixed, also can be made into foldable portable together with other parts.General photo-thermal power generation unit, unit and homestead needs are large and medium-sized, use fixed reliable, convenience, and the small articles used of travelling needs foldable portable.

Black chamber can be arranged in bearing, also can separate independent setting.Can the various forms of suction/heat accumulation of adapted element on Nei Huo top, black chamber, using and be applicable to air, conduction oil, fused salt, water and steam or other any material as suction/heat-storage medium.Suction/heat-storage medium by bearing with Hei chamber, import/export in heated.For the form of bearing and black chamber one, owing to being fixed, be convenient to realize and being reliably connected with external agency system, therefore to the not restriction of the temperature and pressure of suction/heat-storage medium.

For family expenses or portable, black chamber and bearing separate independent setting, and can window in the top in black chamber, configure various cooking pot tools, realize burn, bake, fry, explode, boil, the various cooking methods such as steaming.But they still can be arranged on same base.For simplified structure, reduce volume, weight reduction, follow the tracks of the sun and can adopt manual adjustment, level is followed the tracks of and can be carried out together with base.Not the used time, the shell folding using optically focused dish as a casing is got up, and black chamber is passed from optically focused Die center window, in the middle of being placed on, realizes one case dress to the greatest extent.

Such heat collector has following advantage at least: the one, can realize very high optically focused ratio, and for obtaining high-temperature medium, created condition; The 2nd, be conducive to heat collector and be reliably connected with external agency system, for further improving medium temperature and pressure, created condition; The 3rd, for adopting solid heat accumulation element to create condition in black chamber; The 4th, for directly use Gas-steam Combined Cycle technical scheme in solar heat power generation system, increase substantially the generating thermal efficiency and created condition; The 5th, for domestic solar cooking stove provides the technical scheme of safe and efficient practicality.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of black chamber and support integral dish formula solar furnace, the schematic diagram of Fig. 2 dish formula solar furnace that to be black chamber separate with bearing.In figure (the label symbol implication of two figure is identical): 1-optically focused dish, 2-reflection cap, 3-plane mirror, the black chamber of 4-, 5-support arm, 6-elevation angle tracking means, the horizontal tracking means of 7-, 8-level crossing transmission mechanism, 9-bearing, 10-base, SL-sunray, SLF-light beam.

The specific embodiment

According to the dish formula solar furnace structural requirement shown in Fig. 1 and Fig. 2, make respectively optically focused dish (1), reflection cap (2), plane mirror (3), black chamber (4), support arm (5), elevation angle tracking means (6), horizontal angle tracking means (7), level crossing transmission mechanism (8), bearing (9) and base (10), then carry out Assembling.

1, optically focused dish (1) is a kind of paraboloid of revolution, and the pass between its depth H, diameter D and focal length F three is D ²=16FH.Dish center windowing.Can adopt the structure of laying parabola substrate on skeleton, concave surface can be made into mirror surface by specular aluminium.Optically focused dish (1) also can be made into foldable form according to the folding principle of umbrella, and folding becomes less volume so that tourism is carried together with other parts.

2, reflection cap (2) is also a kind of paraboloid of revolution, and size is less.Pass between its degree of depth h, diameter d and focal distance f three is d ²=16fh.Adopt disposable forging forming paraboloid structure, concave surface can be made into mirror surface by specular aluminium.Reflection cap (2) is installed on the axis of optically focused dish (1), focus outside, and the opening of two mirrors in opposite directions, focus overlaps, and by 3-4 root rod-shaped scaffold, is fixed on optically focused dish.

3, plane mirror (3) is positioned at the lower end of support arm (5) hinged with lower end, can rotate around trunnion axis.Plane mirror (3) can adopt glass mirror, pad pasting or specular aluminium.

4, black chamber (4) are the heat absorption chambers that a kind of blackness is very large, and middle and upper part is hermetically sealed, and the bottom that receives illumination can opening, also available heat resistant glass sealing.Can adopt heating resisting metal or heat-stable ceramic or other fire-resistant pressure-resistant material to make, there is heat-insulation layer outside.Configurable various forms of suction/heat accumulation element.Element appearance all scribbles infrared ray selective coating, to absorb heat energy, reduces secondary radiation.

5, support arm (5) is the parts of supporting optically focused dish (1) and plane mirror (3), and the window edge of upper end and optically focused dish (1) is fixed, and its central axis keeps overlapping with the central axis of optically focused dish (1).It is board-like that support arm (5) can be made into biplate, and cross section is rectangular, and hollow vertically allows unobstructed the passing through of light beam of self-reflection cap (2).Support arm (5) is with two hinges, the hinge of lower end is in order to mounting plane speculum (3), the hinge of middle and upper part is in order to be arranged on the hinge of horizontal tracking means (7) on bearing (9) top, make it both can follow horizontal tracking means (7) and do together to horizontally rotate, also can under the effect of elevation angle tracking means (6), do elevating movement.

6, elevation angle tracking means (6) is followed the sun and is made optically focused dish (1) do elevating movement under the effect of control device and drive unit, regulates the elevation angle centered by hinge.Seasonal motion.

7, horizontal tracking means (7) is followed the sun and is made optically focused dish (1) do to horizontally rotate under the effect of control device and drive unit, regulates azimuth centered by rotating shaft.Constantly move daytime.

8, level crossing transmission mechanism (8) can be sprocket wheel link chain mechanism, can be also bevel type gear drive shaft mechanism, according to the elevation angle of optically focused dish (1), changes and automatically adjusts corner, guarantees that the direction of folded light beam is accurate.According to angle of reflection, equal the principle of incidence angle, this mechanism can be according to the gearratio setting of 2:1, be 2 ° of the every variations in the elevation angle of support arm (5), the corner of plane mirror (3) changes 1 °, as long as set the initial angle of plane mirror (3) when installation and debugging.This mechanism and level are followed the tracks of to rotate and are had nothing to do.

9, bearing (9) is column.When black chamber (4) are arranged on wherein, position, black chamber is outstanding, and windowing, so that light beam enters.Near position, black chamber, have medium import/export, facilitate cold medium to enter with thermal medium and export.When black chamber (4) separately independently arrange, position, window and medium import/export are given prominence in black chamber not to have been needed.Bearing (9) top is provided with elevation angle tracking means (6) and horizontal tracking means (7), and bottom is seated on base (10).

10, base (10) is plate-like, and in order to support all parts and the weight of dish formula solar furnace, its size can keep that bearing (9) is stable to be established to fall down.Can fix with screw element with concrete foundation or combine together.

Claims

1. dish formula solar furnace, mainly by optically focused dish (1), reflection cap (2), plane mirror (3), black chamber (4), support arm (5), elevation angle tracking means (6), horizontal tracking means (7), level crossing transmission mechanism (8), bearing (9) and base (10) form, it is characterized in that: optically focused dish (1) center has window and wherein fixes the upper end of the support arm of axis arranged (5) with edge in the edge of window, support arm (5) is hinged with the horizontal tracking means (7) on bearing (9) top, its hinge member is with elevation angle tracking means (6), reflection cap (2) is positioned on the axis of optically focused dish (1), the outside of focus, the opening of the two in opposite directions, focus overlaps, so that the focused beam (SLF) of autohemagglutination laser disc in future (1) becomes parallel focused beam (S LF) and reflexes on plane mirror (3), plane mirror (3) is positioned at the lower end of support arm (5) hinged with it, and change and automatically adjust corner according to the elevation angle of optically focused dish (1) by level crossing transmission mechanism (8), to guarantee that the light beam (SLF) of self-reflection cap (2) reflexes in black chamber (4) in the future.

2. dish formula solar furnace according to claim 1, is characterized in that: optically focused dish (1) can be made into fixed, also can be made into foldable portable together with other parts.

3. dish formula solar furnace according to claim 1, it is characterized in that: black chamber (4) can be arranged in bearing (9), also can separate independent setting, in black chamber (4) or top can the various forms of suction/heat accumulation of adapted element, using and be applicable to air, conduction oil, fused salt, water and steam or other any material as suction/heat-storage medium.