CN201274018Y - Thermal type solar light tracking apparatus - Google Patents

Abstract

The utility model discloses a temperature-difference type sunshine tracking device. The east side and the west side of the back surface of a beam condensing unit (like a convex lens, and a Fresnel lens, and the like) are respectively provided with a metal pipe; the pipe is provided with a working substance which can be gasified by heating and is communicated with a C-shaped pipe on a rotating shaft. When the sun deviates for a certain distance, the metal pipe at one side can be heated by focus illumination, and the working substance in the pipe is heated and gasified to generate a pressure to drive a closed section of weight counterbalance liquid in the C-shaped pipe to move, thereby leading the gravity center of the C-shaped pipe to deviate and rotate, and driving the beam condensing unit to rotate synchronously to achieve the goal of tracking the sunshine. The utility model can use the self heat of the sunshine to drive the beam condensing unit to automatically track the orientation of the sun, and does not consume power; moreover, a heat drive system is lower in cost than an optoelectronic system, and saves energies and cost.

Description

Temperature difference solar tracking device

Technical field

The utility model relates to a sunlight tracking device, which belongs to the technical field of solar energy application.

Background technique

At present, the known solar tracking devices mainly use photoelectric elements to sense the orientation of sunlight and then control motors to drive concentrating devices such as parabolic reflectors and Fresnel lenses to achieve the purpose of tracking. This method is expensive and consumes a certain amount of electric energy. , so that the concentrating solar system cannot be widely used.

Contents of the invention

In order to overcome the disadvantages of high cost and power consumption of the existing solar tracking devices, the utility model provides a temperature difference solar tracking device, which has a lower cost than the current photoelectric solar tracking device. And do not need to consume electricity.

The technical solution adopted by the utility model to solve the technical problem is: one metal tube is respectively arranged in the east-west direction below the light-gathering device (such as convex lens and Fresnel lens, etc.), and when the light-gathering device is facing the direction of the sun, two The metal tubes are all in a state of shading. When the position of the sun shifts by a certain distance, one of the metal tubes will move to the focus and be heated. The working fluid in the tube is heated and vaporized to generate pressure to drive a C-shaped (or separated ring) tube. A section of the counterweight liquid closed in the middle moves, so that the center of gravity of the C-shaped tube is shifted and rotated. The center of the C-shaped tube is coaxial with the rotation center of the light concentrating device, so that the C-shaped tube will drive the light concentrating device to rotate synchronously to achieve The purpose of tracking sunlight. The central axis of rotation of the light concentrating device passes through the center of gravity of the system itself, so that the C-shaped tube drives the light concentrating device to rotate synchronously, which saves effort.

The beneficial effect of the utility model is that the heat of the sunlight itself can be used to drive the concentrating device to automatically track the sun's position without consuming electric energy, and the cost of the heat-driven system is lower than that of the photoelectric drive system, thereby saving energy and cost.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Accompanying drawing is the sectional structure figure of the utility model.

Among the figure 1. light concentrating device, 2. trachea, 3. metal pipe, 4. transparent insulation cover, 5. sponge body, 6. C-shaped pipe, 7. rotating shaft, 8. metal pipe, 9. trachea.

Detailed ways

In the figure, a metal pipe (3) and a metal pipe (8) closed at both ends are respectively arranged in the east-west direction below the concentrating device (1), and the upper part of the metal pipe (3) has a gas pipe (2) connected to a C-shaped pipe One end of (6), the upper part of metal pipe (8) has air pipe (9) to communicate with the other end of C-shaped pipe (6), metal pipe (3), metal pipe (8), air pipe (2), air pipe (9) , C-shaped pipe (6) inside all vacuumizes. There is a transparent insulation cover (4) outside the metal tube (3), and there is a sponge body (5) inside the tube. The sponge body (5) is adsorbed with a binary working fluid that can generate gas and increase the pressure inside the tube when heated, such as ammonia water or lithium bromide aqueous solution (At this time, the counterweight liquid can be used as engine oil, etc., and it is required that it cannot react or dissolve with the gas generated by the working medium). The inner and outer structures of the metal pipe (8) and the metal pipe (3) are exactly the same, and the installation position is symmetrical to that of the metal pipe (3).

When the concentrating device (1) is facing the sun, its focus falls on the gap between the metal tube (8) and the metal tube (3). It will fall on the metal tube (3) or metal tube (8), so that the working medium in the tube is heated and vaporized to generate pressure to push the counterweight liquid in the C-shaped tube (6), thereby driving the entire system to rotate around the center of gravity of the system Axle (7) rotates, reaches the purpose of tracking sunlight. The transparent heat preservation cover (4) outside the metal pipe (3) has heat preservation and heat storage effect on the metal pipe (3), and can also ensure that enough heat is stored to vaporize the working medium in the pipe when the light is weak.

The sun tracking device is divided into one-way tracking (that is, it only rotates east and west, and the south and north directions only change by plus or minus 23.5 degrees throughout the year, so it is only necessary to manually adjust the angle of the bracket on a regular basis, also known as single-axis tracking) and two-way tracking. (East, west and south, north all rotate, also claim biaxial tracking), above embodiment is one-way tracking, also can be used on two-way tracking in like manner.

Claims (4)

1. A temperature difference type sunlight tracking device, comprising a light concentrating device, is characterized in that: the east and west sides below the light concentrating device are respectively provided with metal tubes, and a C-shaped tube is connected on the system rotation axis. 2. A temperature difference solar tracking device according to claim 1, characterized in that there is a transparent insulation cover outside the metal tube, there is a sponge body inside the metal tube, and a binary working fluid is adsorbed on the sponge body, and the upper part of the tube is connected to the The C-shaped pipes communicate. 3. A temperature difference solar tracking device according to claim 1, characterized in that the rotation axis of the C-shaped tube coincides with the center of gravity of the entire solar tracking device. 4. A temperature difference solar tracking device according to claim 1, characterized in that there is a counterweight liquid in the C-shaped tube.

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