CN201991579U - air power generation device - Google Patents

Abstract

A new energy air energy power generation device mainly comprises an evaporator, an expansion engine, a generator, an internal heat exchanger, a compressor, a working medium pump, a pipeline, an accessory and a detection and control device, wherein the pipeline, the accessory and the detection and control device are connected with the working medium pump, and working media are arranged in a closed system. The working medium absorbs heat through the evaporator to be high-pressure gaseous working medium, and the high-pressure gaseous working medium enters the expansion engine to expand, do work, cool and reduce pressure so as to drive the generator to generate electricity; the expansion engine outlet pressure is determined by the compressor inlet pressure; the low-temperature and low-pressure working medium absorbs heat through the internal heat exchanger, is compressed by the compressor, is heated and pressurized, then flows to the internal heat exchanger to release heat and condense, and is pressed into the evaporator to absorb heat and evaporate through the working medium pump, so that a closed circulating system is formed. It needs no external cold source, and has high heat efficiency, simple structure, low investment and low cost.

Description

air power generation device

technical field

The utility model relates to a new energy generating device, in particular to an air energy generating device.

Background technique

The vast majority of electric energy comes from the sun, no matter wind energy, water energy, biomass energy or fossil energy - coal, oil, natural gas, combustible ice. In today's increasingly tense energy environment, new renewable, green and clean electric energy utilization technologies are gaining more and more attention. Now, among new energy sources, solar power generation technologies such as hydropower and wind power, and direct utilization technologies of solar power generation—photovoltaic cells and mirror surface concentrating power generation technologies are quite mature; the development potential of hydropower generation is not great; and wind power and sunlight are too scattered. The direct use of wind power and solar power generation occupies a large area and requires a very high one-time investment. The earth's atmosphere absorbs and emits the energy of solar radiation repeatedly every day, and the ambient fluid that absorbs solar heat energy—the solar heat energy in the air is renewed every day, which is almost inexhaustible. Thereby people are stepping up research on the thermal power generation technology in the air of the environmental fluid of new indirect utilization of solar thermal energy-air. Among them, low-temperature solar thermal power generation technology is the most promising high-tech. At present, known heat pump low-temperature air power generation devices use a heat pump system to enrich low-temperature solar heat in the air and then use a Rankine cycle system to generate electricity. The heat pump system mainly includes compressors, condensers, throttles, and evaporators; the Rankine cycle power generation system mainly includes condensers, circulating pumps, evaporators, and expansion generator sets. The heat pump low-temperature solar thermal power generation technology not only consumes energy for the operation of the heat pump, but also a large amount of heat consumed by the condenser of the Rankine cycle power generation system will flow out of the power generation system and be not effectively utilized. It has complex structure, high investment, and especially low thermal efficiency.

Contents of the invention

In order to overcome the disadvantages of the existing heat pump type air energy generating device, such as complex structure, high investment, and low thermal efficiency, the utility model provides an air energy generating device, which does not need an external cold source, has high thermal efficiency and simple structure , Low investment and low cost.

The technical scheme adopted by the utility model to solve the technical problem is: the air energy generating device mainly includes an evaporator, an expansion engine, a generator, an internal heat exchanger, a compressor, and a working medium pump; Pipelines, accessories, detection and control devices, and working fluid in the closed system; the generator is connected with the expansion engine. The evaporator can absorb the low-temperature ambient fluid—the heat energy in the air to heat the liquid working medium to become a high-pressure gaseous working medium, and then the high-pressure gaseous working medium enters the expansion engine to expand and do work, driving the generator to generate electricity; the outlet of the expansion engine is a low-temperature and low-pressure working medium, and the low-temperature and low-pressure working medium The medium flows to the compressor after absorbing heat through the internal heat exchanger, and the outlet pressure of the expansion engine is determined by the inlet pressure of the compressor; the higher-pressure working medium compressed by the compressor flows to the internal heat exchanger to release heat and condense, and then is pressed into the compressor by the working medium pump. The evaporator absorbs the heat energy in the low-temperature ambient fluid—the air, heats the liquid working medium to become a high-pressure gaseous working medium, and then enters the expansion engine to expand and do work, driving the generator to generate electricity, thus forming a closed cycle system. The compressor of the air energy generating device may also be a multi-stage compressor unit. The main shaft of the expansion engine and the main shaft of the compressor of the air energy generating device can also be connected. A high-efficiency heat pipe heat exchanger can also be added between the internal heat exchanger and the compressor of the air energy power generation device to supplement and absorb heat energy in the air. The air energy generating device can also be installed on vehicles, ships and other mechanical equipment as a direct power device or a charging device. The air energy generating device by-produces cold air.

The beneficial effect of the utility model is that the air energy generating device does not need an external cooling source, has high thermal efficiency, simple structure, low investment and low cost.

Description of drawings

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

Accompanying drawing is the working flow schematic diagram of the utility model embodiment.

In the figure 1. Evaporator 2. Expansion engine 3. Generator 4. Internal heat exchanger 5. Compressor 6. Working medium pump.

Detailed ways

In the embodiment shown in the drawings, the air energy power generation device mainly includes an evaporator (1), an expansion engine (2), a generator (3), an internal heat exchanger (4), a compressor (5), and a working medium The pump (6); it also includes connected pipes, accessories and detection and control devices in the system, and there is a working medium in the closed system; the generator (3) is connected with the expansion engine (2). The evaporator (1) can absorb the low-temperature ambient fluid—the heat energy in the air to heat the liquid working medium to become a high-pressure gaseous working medium, and then the high-pressure gaseous working medium enters the expansion engine (2) to expand and do work, driving the generator (3) to generate electricity; the expansion engine ( 2) The outlet is a low-temperature and low-pressure working fluid, which flows to the compressor (5) after absorbing heat through the internal heat exchanger (4); the outlet pressure of the expansion engine (2) is determined by the inlet pressure of the compressor (5); The high-pressure working fluid compressed by the compressor (5) flows to the internal heat exchanger (4) to release heat and condense, and then is pressed into the evaporator (1) through the working fluid pump (6) to absorb the heat energy in the low-temperature ambient fluid—air to heat the liquid The working medium becomes a high-pressure gaseous working medium, and then enters the expansion engine (2) to expand and do work, driving the generator (3) to generate electricity; thus forming a closed cycle system. The main shaft of the expansion engine (2) and the main shaft of the compressor (5) of the air energy generating device may also be connected.

Claims (3)

1. an air energy power-generating device mainly comprises vaporizer, expansion motor, generator, internal exchanger, compressor, working medium pump, it also comprises pipeline, annex and detection and the control gear that is connected in the system, working medium is arranged in the closed system, it is characterized in that: vaporizer, expansion motor, generator, internal exchanger, compressor, working medium pump are connected successively, form the circulatory system.

2. air energy power-generating device according to claim 1 is characterized in that: the compressor of this air energy power-generating device is a multistage compressor.

3. air energy power-generating device according to claim 1 is characterized in that: be connected between this air energy power-generating device expansion engine spindle and the compressor bank main shaft.