阅读说明：本技术 一种用于光热发电的集热装置 (Heat collection device for photo-thermal power generation ) 是由 不公告发明人 于 2020-05-15 设计创作，主要内容包括：本发明属于光热发电技术领域,具体公开了一种用于光热发电的集热装置,包括集热机构、用于集热机构遮挡雨雪的遮挡机构和PLC控制器,遮挡机构包括第一转轴、第二转轴、雨滴传感器、用于支撑第一转轴的第一支撑单元和用于支撑第二转轴的第二支撑单元,第一转轴的两端设有缠绕轮,第二转轴缠绕有遮雨布,两个缠绕轮上均缠绕有绳索,每个绳索的自由端均与遮雨布的自由端连接,第一转轴上连接有第一电机,雨滴传感器设于第二支撑单元上,雨滴传感器和第一电机均与PLC控制器电性连接。本发明可以在有雨雪天气时,利用遮挡机构遮挡集热机构,避免雨雪滴落在集热机构上腐蚀内部元件,导致集热机构的使用寿命缩短。(The invention belongs to the technical field of photo-thermal power generation, and particularly discloses a heat collecting device for photo-thermal power generation, which comprises a heat collecting mechanism, a shielding mechanism and a P L C controller, wherein the shielding mechanism is used for shielding rain and snow by the heat collecting mechanism, and comprises a first rotating shaft, a second rotating shaft, a raindrop sensor, a first supporting unit and a second supporting unit, the first supporting unit is used for supporting the first rotating shaft, the second supporting unit is used for supporting the second rotating shaft, two ends of the first rotating shaft are provided with winding wheels, the second rotating shaft is wound with a piece of rain shielding cloth, the two winding wheels are respectively wound with ropes, the free end of each rope is connected with the free end of the rain shielding cloth, the first rotating shaft is connected with a first motor, the raindrop sensor is arranged on the second supporting unit, and the raindrop sensor and the first motor are electrically connected with the P L C controller.)

1. The utility model provides a heat collecting device for solar-thermal power generation, a serial communication port, including the thermal-arrest mechanism that is used for absorbing solar energy, be used for thermal-arrest mechanism to shelter from the mechanism of sleet, be used for supporting base and the P L C controller of thermal-arrest mechanism, shelter from the mechanism including first pivot, second pivot, raindrop sensor, be used for supporting the first supporting element of first pivot and be used for supporting the second supporting element of second pivot, first supporting element and second supporting element all locate on the base, and are located the both sides of thermal-arrest mechanism, the both ends of first pivot are equipped with the winding wheel, the cover is equipped with the scroll spring in the second pivot, the one end and the second pivot fixed connection of scroll spring, the other end of scroll spring bonds and has the cloth of hiding rain, wrap up the cloth winding in the second pivot, two it has the rope, every all to twine on the winding wheel the free end of rope all is connected with the free end of cloth, be connected with first motor in the first pivot, the raindrop sensor is located on the second supporting element, raindrop sensor and the equal P L electric connection of first motor.

2. The heat collecting device for solar-thermal power generation according to claim 1, wherein the first supporting unit includes two first electric push rods, the second supporting unit includes two second electric rods, the two first electric push rods and the two second electric push rods are both fixedly connected to the base, two ends of the first rotating shaft are respectively rotatably connected to the two first electric push rods, two ends of the second rotating shaft are respectively rotatably connected to the two second electric push rods, and the first electric push rods and the second electric push rods are both electrically connected to the P L C controller.

3. The heat collecting device for solar-thermal power generation according to claim 2, wherein the heat collecting mechanism comprises a first supporting plate and a second supporting plate, the top end of the first supporting plate is provided with a supporting rod, the top end of the supporting rod is fixedly connected with a molten salt pipe, both sides of the top end of the first supporting plate are fixedly connected with light collecting plates, the light collecting plates are symmetrical about the axis of the molten salt pipe, the bottom end of the second supporting plate is fixedly connected with the top end of the base, and the top end of the second supporting plate is connected with the bottom end of the first supporting plate.

4. A heat collecting device for solar-thermal power generation according to claim 3, wherein the distance between the first rotating shaft and the base is greater than the distance between the second rotating shaft and the base.

5. A heat collecting device for solar thermal power generation according to any one of claims 2 to 4, it is characterized by also comprising an angle adjusting mechanism for adjusting the illumination angle of the light collecting plate, wherein the angle adjusting mechanism comprises a solar tracker for monitoring the illumination intensity, a screw rod, a connecting rod and a second motor, the bottom end of the first supporting plate is hinged with the top end of the second supporting plate, the solar tracker is arranged on the light-gathering plate, the bottom end of the screw rod is rotationally connected with the top end of the base, the second motor is fixed at the top end of the base, the output shaft of the second motor is in transmission connection with the top end of the screw rod through a belt, the screw rod is in threaded connection with a slide block, one end of the connecting rod is hinged to one side of the first supporting plate, the other end of the connecting rod is hinged to the sliding block, and the second motor and the solar tracker are both electrically connected with the PIC controller.

6. The heat collecting device for solar-thermal power generation as claimed in claim 5, wherein a plurality of telescopic rods are hinged to both sides of the bottom end of the first supporting plate, and each of the telescopic rods has a free end hinged to the second supporting plate.

7. A heat collecting device for solar-thermal power generation according to claim 6, wherein the molten salt pipe is filled with a mixture of sodium nitrate and potassium nitrate.

Technical Field

The invention relates to the technical field of photo-thermal power generation, in particular to a heat collection device for photo-thermal power generation.

Background

The solar photo-thermal power generation is realized by collecting solar heat energy by utilizing a large-scale array parabolic or dish-shaped mirror surface, providing steam through a heat exchange device and combining the process of driving a motor by traditional turbo-generation. The solar photo-thermal power generation technology is adopted, so that an expensive silicon crystal photoelectric conversion process is avoided, and the cost of solar power generation can be greatly reduced; moreover, the solar energy utilization in the form has incomparable advantages compared with other forms of solar energy conversion, namely that water heated by solar energy can be stored in a huge container, and a turbine can still be driven to generate electricity for several hours after the sun lands, namely the time of energy conversion is prolonged, and the generating efficiency is improved. However, in the conventional photo-thermal power generation system, the heat collecting device is a core component of the whole photo-thermal power generation system, but the heat collecting device is exposed to the external environment to collect solar energy, so that rain and snow corrode each element of the heat collecting device in rainy and snowy weather, thereby shortening the service life of the heat collecting device.

Disclosure of Invention

The invention aims to provide a heat collecting device for photo-thermal power generation, which aims to solve the problem that the service life of the conventional heat collecting device for photo-thermal power generation is shortened due to the fact that the conventional heat collecting device is easily corroded by rain and snow in rainy and snowy weather.

In order to achieve the purpose, the invention provides a heat collecting device for photo-thermal power generation, which comprises a heat collecting mechanism for absorbing solar energy, a shielding mechanism for shielding rain and snow by the heat collecting mechanism, a base for supporting the heat collecting mechanism and a P L C controller, wherein the shielding mechanism comprises a first rotating shaft, a second rotating shaft, a raindrop sensor, a first supporting unit for supporting the first rotating shaft and a second supporting unit for supporting the second rotating shaft, the first supporting unit and the second supporting unit are arranged on the base and positioned on two sides of the heat collecting mechanism, two ends of the first rotating shaft are provided with winding wheels, a volute spring is sleeved on the second rotating shaft, one end of the volute spring is fixedly connected with the second rotating shaft, a rainshelter cloth is bonded on the other end of the volute spring, the rainshelter cloth is wound on the second rotating shaft, two winding wheels are respectively provided with a winding rope, the free end of each rope is connected with the free end of the rainshelter cloth, the first rotating shaft is connected with a first motor, the raindrop sensor is arranged on the second supporting unit, and the raindrop sensor and the P L C controller are electrically connected with the first motor.

The principle and the beneficial effects of the invention are that when a rain sensor monitors rain and snow, the P L C controller controls the first motor to rotate, the first motor rotates to drive the first rotating shaft to rotate, then the first rotating shaft drives the winding wheel to wind the rope, the rope pulls and unfolds the rain shielding cloth from the second rotating shaft while the winding wheel winds the rope, the volute spring deforms at the same time, and then the rain shielding cloth shields the upper part of the heat collecting mechanism, so that the purpose of shielding the rain and snow is realized, when weather is clear, the P L C controller controls the first motor to rotate in the reverse direction, the first motor rotates to drive the first rotating shaft to rotate, then the rain shielding cloth gradually winds on the second rotating shaft under the action of the volute spring deformation, and simultaneously the rope is unfolded from the first rotating shaft, so that the heat collecting mechanism is exposed to absorb solar energy under sunlight.

Scheme two, this is the preferred of basic scheme, first supporting element includes two first electric putter, second supporting element includes two second electric putter, two first electric putter and two second electric putter all with base fixed connection, the both ends of first pivot rotate with two first electric putter respectively and are connected, the both ends of second pivot rotate with two second electric putter respectively and are connected, first electric putter and second electric putter all with P L C controller electric connection.

When the weather is clear, the P L C controller controls and starts the first motor to reversely rotate at first, so that the rain shielding cloth is wound on the second rotating shaft under the action of deformation of the volute spring, then the P L C controller controls the first electric push rod and the second electric push rod to drive the first rotating shaft and the second rotating shaft to downwards move.

Scheme three, this is the preferred of scheme two, thermal-arrest mechanism includes first backup pad and second backup pad, the top of first backup pad is equipped with the bracing piece, the top fixedly connected with fused salt pipe of bracing piece, the equal fixedly connected with solar panel in top both sides of first backup pad, solar panel is symmetrical about the axis of fused salt pipe, the top fixed connection of second backup pad bottom and base, the top of second backup pad is connected with the bottom of first backup pad.

Preferably, in the third aspect, a distance between the first rotating shaft and the base is greater than a distance between the second rotating shaft and the base. Set up the distance between first pivot and the base and be greater than the distance between second pivot and the base, can make the waterproof cloth by the pulling expansion back, the top of waterproof cloth forms domaticly, and the waterproof cloth of being convenient for is when sheltering from sleet, and sleet can be followed and is slided fast on the waterproof cloth, and when the sleet was piled up on the top of avoiding the waterproof cloth, the pressure that the waterproof cloth bore was too big, leads to the junction disconnection of waterproof cloth and rope.

Scheme five, this is the preferred of scheme two to four, still including the angle adjustment mechanism who is used for adjusting the solar panel illumination angle, angle adjustment mechanism is including the solar energy tracker, lead screw, connecting rod, the second motor that are used for monitoring illumination intensity, the bottom of first backup pad is connected with the top of second backup pad is articulated, solar energy tracker is located on the solar panel, the bottom of lead screw is rotated with the top of base and is connected, the second motor is fixed on the base top, the output shaft of second motor and the top of lead screw are passed through belt transmission and are connected, threaded connection has the slider on the lead screw, the one end of connecting rod is connected with one side of first backup pad is articulated, the other end and the slider of connecting rod are articulated to be connected, second motor and solar energy tracker all with PIC controller electric connection.

When solar energy tracker monitors illumination intensity weak, the second motor of P L C controller control rotates, the motor drives the lead screw and rotates after that, it reciprocates to drive the slider when the lead screw rotates, when the slider reciprocates, the slider promotes first backup pad through the connecting rod and deflects along the hinged end of first backup pad and second backup pad, at the in-process of first backup pad deflection, if solar energy tracker monitors illumination intensity when strong, the second motor of P L C controller control is closed, thereby realize the regulation of solar panel angle, and then improve the effect that the fused salt pipe absorbed solar energy.

Scheme six, this is the preferred of scheme five, the bottom both sides of first backup pad all articulate and are connected with a plurality of telescopic link, every the free end of telescopic link all articulates with the second backup pad and is connected. The telescopic rod can ensure that the first supporting plate can keep stable when deflecting or standing still.

And a seventh scheme, which is preferable to the sixth scheme, wherein a mixture of sodium nitrate and potassium nitrate is filled in the molten salt pipe. The mixture of sodium nitrate and potassium nitrate is adopted to absorb solar energy, and the effect is better.

Drawings

FIG. 1 is a front view of a heat collecting device for photo-thermal power generation according to the present invention, in which a waterproof cloth covers a heat collecting mechanism;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a front view of a heat collecting device for photo-thermal power generation according to the present invention, wherein the heat collecting device is not covered by a waterproof cloth;

FIG. 4 is a left side view of a heat collecting device for photo-thermal power generation according to the present invention, wherein the heat collecting device is covered with a waterproof cloth;

FIG. 5 is a right side view of a heat collecting device for photo-thermal power generation according to the present invention, wherein the heat collecting device is covered with a waterproof cloth;

FIG. 6 is an enlarged view at B in FIG. 2;

FIG. 7 is a control flow chart of a shielding mechanism of a heat collecting device for photo-thermal power generation according to the present invention;

fig. 8 is a control flowchart of an angle adjusting mechanism of a heat collecting device for photo-thermal power generation according to the present invention.

Detailed Description

The present invention will be described in further detail below by way of specific embodiments:

reference numerals in the drawings of the specification include: the solar energy rain-proof device comprises a base 1, a first electric push rod 2, a winding wheel 3, a first rotating shaft 4, a rope 5, rain shielding cloth 6, a light gathering plate 7, a molten salt pipe 8, a supporting rod 9, a solar tracker 10, a first supporting plate 11, a telescopic rod 12, a second supporting plate 13, a connecting rod 14, a screw rod 15, a sliding block 16, a second motor 17, a second electric push rod 18, a first motor 19, a second rotating shaft 20, a volute spiral spring 21 and a raindrop sensor 22.