CN102146856B - Low-temperature efficient stirling power generation device - Google Patents

Abstract

The invention relates to a Stirling low-temperature high-efficiency power generation device, which belongs to a thermoelectric power generation device. It includes air distribution piston cylinder (1), air duct (2), power piston cylinder (3), cylinder groove (4), air distribution piston chamber cover (5), rubber ring (6), large air distribution piston (8 ), generator (15), energy storage capacitor (16). By heating the gas in the cavity, the gas distribution piston reciprocates up and down, and the pressure change causes the power piston to reciprocate horizontally in the power piston cylinder, thereby driving the flywheel to rotate through the rocker, and synchronizing with the driving wheel fixedly connected to the flywheel through the rotating shaft It moves and drives the driven wheel to rotate through the transmission belt, so that the generator generates electricity, stores the electric energy in the capacitor and outputs the electric energy. The invention can generate electricity efficiently at low temperature, which is in line with the contemporary concept of "energy saving and emission reduction". In addition, the device is equipped with storage capacitors, which can collect very small currents, improve the energy utilization rate of existing devices, and have high integration.

Description

Stirling low-temperature high-efficiency power generation device

Technical field

The present invention is a Stirling low-temperature high-efficiency power generation device, which belongs to the technical field of thermoelectric power generation devices. the

Background technique

The Stirling engine is an external combustion, closed cycle reciprocating piston heat engine. As long as there is a temperature difference between the hot end and the cold end, it will work. It is suitable for all kinds of energy, whether it is liquid, gaseous or solid fuel, as long as it is heated at the hot end, it can generate power, and the engine itself does not need to make any changes except the heater, and it can also be used normally on plateaus . At present, in order to improve the efficiency and power of the engine, the internal working medium generally uses high-pressure helium. We start from the working medium to improve it and select normal-pressure air and low-boiling point phase-change working medium. to increase its efficiency and power. In the middle of the last century, when researchers used composite working fluids, they could not guarantee the uniform distribution of the two components in the cylinder. In addition, the condensed liquid droplets may cause large fluctuations when they are vaporized, which also makes composite working fluids unusable in engineering. root cause. The invention has an improved structure and is positioned for use at low temperatures, which can well solve the problem of pressure fluctuations. the

Contents of the invention

The purpose of the present invention is to provide a Stirling low-temperature high-efficiency power generation device. the

A Stirling low-temperature high-efficiency power generation device, which is composed of a Stirling engine and a power generation and energy storage device. The gas distribution piston cylinder is composed of a cylinder groove, a gas distribution piston chamber cover installed on the cylinder groove, a rubber ring installed in the cylinder groove, a spring, and a large gas distribution piston; the rubber ring is installed under the gas distribution piston chamber cover, and the The large gas piston is installed under the rubber ring through a spring; the space formed between the gas distribution piston cavity cover, the rubber ring and the gas distribution large piston is the gas distribution piston cavity; the above gas distribution piston cavity cover is cone or slope type; It includes a small power piston installed in the power piston cylinder; the above-mentioned power generation and energy storage device includes a rotating shaft fixing part, a rotating shaft mounted on the rotating shaft fixing part through a bearing, a flywheel and a driving wheel coaxially fixed on the rotating shaft, and a belt And the driven wheel, and the generator and energy storage capacitor connected to the driven wheel in turn; the flywheel is connected with the small power piston through the connecting rod; the gas distribution piston cavity has liquid working fluid and air with a boiling point of 60-90 degrees Celsius. the

The above-mentioned Stirling low-temperature high-efficiency power generation device is characterized in that it also includes a solar energy collection device connected to the above-mentioned power generation and energy storage device. the

The above-mentioned Stirling low-temperature high-efficiency power generation device is characterized in that: the above-mentioned solar energy collection device is composed of a bracket, a left hemispherical solar reflector, and a right hemispherical solar reflector; wherein the Stirling engine and the power generation and energy storage device are installed on the above-mentioned support , the left hemispherical solar reflector and the right hemispherical solar reflector are respectively installed on the left and right sides of the bracket through the rotating shaft, when the left hemispheric solar reflector and the right hemispheric solar reflector are closed, the whole is spherical. the

Principle Description

During the use of the above device, the air distribution piston cylinder is heated, and the flywheel is driven to rotate by using the Stirling cycle; the flywheel drives the generator to work through the belt pulley, and stores energy through the energy storage capacitor.

Among them, the purpose of adding low-boiling-point liquid working medium into the gas distribution piston chamber is to use it to participate in the Stirling cycle. Because it becomes gaseous after being heated, it becomes liquid when it is cooled at the gas distribution piston cover and flows back to the bottom of the gas distribution piston cylinder. Increase the boost ratio in the gas distribution piston cavity to further increase the power. The above gas distribution piston cavity cover adopts a cone shape or a slope type to facilitate the flow of liquid back to the bottom of the gas distribution piston cylinder. the

The invention improves the Stirling generator to realize the purpose of low-temperature and high-efficiency power generation, especially the high-efficiency power generation under relatively low temperature difference. the

Description of drawings

Figure 1 is a schematic diagram of the overall layout of the core part of the device of the present invention;

Fig. 2 is a schematic top view of the core components of the device;

Figure 3 is a schematic diagram of the front view of the device;

The names of the labels in the figure: 1 is the gas distribution piston cylinder, 2 is the air guide pipe, 3 is the power piston cylinder, 4 is the cylinder groove, 5 is the gas distribution piston chamber cover, 6 is the rubber ring, 7 is the spring, 8 is the gas distribution valve Piston, 9 is a small power piston, 10 is a shaft fixing part, 11 is a shaft, 12 is a flywheel, 13 is a driving wheel, 14 is a driven wheel, 15 is a generator, 16 is an energy storage capacitor, 17 is a connecting rod, 18 is a Belt, 19 is a support, 20 is a left hemispherical solar reflector, 21 is a right hemispherical solar reflector, and 22 is a support rotating shaft.

Detailed ways

In Figures 1 to 2, the outer bottom of the square shell is heated to increase the temperature of the compound working fluid (air + low-boiling point liquid) inside the gas distribution piston cavity, so that the pressure inside the gas distribution piston cavity increases, and the spring 7 and the pressure Under the combined action of the gas distribution piston 8, the large gas distribution piston 8 starts to do simple harmonic vibration, so that the gas in the gas distribution piston cavity flows on the upper and lower surfaces of the gas distribution piston. The gas distribution piston chamber cover 5 is the cold end, and the air enters through the ventilation holes to take away the heat of the cone top. When the air flow reaches the top of the cone, the air in the composite working fluid is compressed when it is cold and the low boiling point working fluid is condensed when it is condensed, so that the pressure in the chamber decreases, so that the power piston generates a pressure difference between front and back to drive the flywheel 12 to rotate. And drive the driven wheel 14 to rotate through the driving wheel 13 to drive the generator 15 to generate electricity and store it in the capacitor 16. the

In Fig. 3, the heat at the outer bottom of the square shell comes from the sunlight reflected by the left hemispherical solar reflector 20 and the right hemispherical solar reflector 21 and the solid fuel in the solid combustion chamber when sunlight is insufficient. The left hemispherical solar reflector 20 and the right hemispherical solar reflector 21 can be manually adjusted with the angle of the sun, and they rotate around the left hemispheric solar reflector and the right hemispheric solar reflector respectively to achieve the best reflection Location. the

In the figure, the square shell is fixed on the support 19, and after the support 19 is closed, the right hemispherical solar reflector 21 can receive it in the abdomen. the

Claims (3)

1. a low-temperature efficient stirling power generation device, be comprised of Stirling engine and generating and energy storage device, it is characterized in that:

Above-mentioned Stirling engine comprises gas distribution piston cylinder (1), the power piston cylinder (3) be communicated with the gas distribution piston cylinder by air pipe (2);

Wherein the gas distribution piston cylinder by cylinder groove (4), be installed on gas distribution piston chamber on cylinder groove cover (5), the rubber ring (6), spring (7) and the large piston of distribution (8) that are installed in the cylinder groove form; Wherein rubber ring (6) be installed on gas distribution piston chamber cover (5) below, the large piston of distribution (8) by spring fitting in rubber ring (6) below; The space wherein formed between gas distribution piston chamber cover, rubber ring (6), the large piston of distribution (8) is the gas distribution piston chamber; Above-mentioned gas distribution piston chamber cover (5) is tapered or ramp type;

Also comprise the power small piston (9) be installed in power piston cylinder (3);

Above-mentioned generating and energy storage device comprises rotating shaft fixed block (10), by bearing, is installed on rotating shaft (11) on the rotating shaft fixed block, also comprises and also comprise belt (18) and follower (14) and the generator (15) be connected with follower successively and storage capacitor (16) by flywheel (12) and the driving wheel (13) coaxially be fixed in rotating shaft;

Above-mentioned flywheel is connected with power small piston (9) by connecting rod (17);

There is boiling point in above-mentioned gas distribution piston chamber at liquid refrigerant and the air of 60-90 degree centigrade.

2. low-temperature efficient stirling power generation device according to claim 1, is characterized in that: also comprise the solar collecting device be connected with above-mentioned generating and energy storage device.

3. low-temperature efficient stirling power generation device according to claim 2, it is characterized in that: above-mentioned solar collecting device is comprised of support (19), left hemisphere type solar energy reflection mirror (20), right hemisphere type solar energy reflection mirror (21); Wherein Stirling engine and generating and energy storage device are installed on above-mentioned support (19), left hemisphere type solar energy reflection mirror (20) and right hemisphere type solar energy reflection mirror (21) are installed on the support left and right sides by rack shaft (22) respectively, and when left hemisphere type solar energy reflection mirror (20) and right hemisphere type solar energy reflection mirror (21) closure, integral body is ball-type.

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