CN212508675U

CN212508675U - Organic Rankine cycle power generation device

Info

Publication number: CN212508675U
Application number: CN202021475091.1U
Authority: CN
Inventors: 李炫曈
Original assignee: Guangxi University
Current assignee: Guangxi University
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-02-09
Anticipated expiration: 2030-07-23

Abstract

The utility model discloses an organic Rankine cycle power generation device, which comprises a shell-and-tube heat exchanger, a steam turbine, a condenser, a heat regenerator and a solar heat collector; the system comprises a shell-and-tube heat exchanger, a steam turbine, a condenser, a heat regenerator and a first medium pump, wherein the shell-and-tube heat exchanger, the steam turbine, the condenser, the heat regenerator and the first medium pump form a first medium circulation loop; the shell-and-tube heat exchanger, the solar heat collector and the second medium pump form a second medium circulation loop; the condenser, the compressor and the heat regenerator form a third medium circulation loop; the steam turbine is connected with a generator; the second medium circulation loop heats the first medium in the shell-and-tube heat exchanger, so that the first medium forms steam, and the third medium circulation loop heats the first medium after doing work. The utility model has the advantages of simple structure, it is with low costs, its heat utilization rate and thermoelectric conversion rate can obtain very big improvement.

Description

Organic Rankine cycle power generation device

Technical Field

The utility model relates to a rankine cycle power generation system field especially relates to an organic rankine cycle power generation facility.

Background

For the current social development, many enterprises face the problem of exhaust emission, the exhaust emission not only pollutes the environment, but also causes waste of low-temperature heat energy, the low-temperature heat energy refers to heat energy with relatively low grade, the temperature is generally lower than 200 ℃, the energy sources are various, and the renewable energy sources comprise solar heat energy, various industrial waste heat, geothermal heat, ocean temperature difference and the like, if the renewable energy sources can be fully utilized, the renewable energy sources can greatly save energy sources, so that the significance of safely, reliably and efficiently utilizing the heat energy is great. Compared with the traditional steam Rankine cycle power generation system, the Organic Rankine Cycle (ORC) power generation system adopting the low-boiling-point organic medium has the advantages of high power generation efficiency, environmental friendliness, simple structure and high reliability, and becomes the best choice for recycling low-temperature heat energy.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned defect or not enough, the utility model aims to provide an organic rankine cycle power generation facility.

In order to achieve the above purpose, the technical scheme of the utility model is that:

an organic Rankine cycle power generation device comprises a shell-and-tube heat exchanger, a steam turbine, a condenser, a heat regenerator and a solar heat collector; the system comprises a shell-and-tube heat exchanger, a steam turbine, a condenser, a heat regenerator and a first medium pump, wherein the shell-and-tube heat exchanger, the steam turbine, the condenser, the heat regenerator and the first medium pump form a first medium circulation loop; the shell-and-tube heat exchanger, the solar heat collector and the second medium pump form a second medium circulation loop; the condenser, the compressor and the heat regenerator form a third medium circulation loop; the steam turbine is connected with a generator; the second medium circulation loop heats the first medium in the shell-and-tube heat exchanger, so that the first medium forms steam, and the third medium circulation loop heats the first medium after doing work.

And a medium outlet of the shell-and-tube heat exchanger in the first medium circulation loop is sequentially connected with a steam turbine, a condenser, a first medium pump and a heat regenerator, and an outlet of the heat regenerator is connected with a medium inlet of the heat exchanger.

And a first oil storage tank is also arranged in the first medium circulation loop.

And a second medium outlet of the solar heat collector in the second medium circulation loop is connected with a heating inlet of the shell-and-tube heat exchanger, and a heating outlet of the shell-and-tube heat exchanger is connected with a second medium inlet of the solar heat collector through a second medium pump.

The second medium circulation circuit further comprises a double pipe heat exchanger for heating the first medium in the shell and tube heat exchanger.

And a second liquid storage tank and a throttle valve are arranged on the third medium circulation loop.

The third medium circulation circuit heats the first medium in the regenerator.

The first medium is superconducting liquid, the second medium is heat conducting oil, and the third medium is an inorganic medium or a low-boiling-point organic medium.

The condenser and the heat regenerator both adopt double-flow heat exchangers.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides an organic rankine cycle power generation facility forms three circulation circuit through using solar collector, shell-and-tube heat exchanger, condenser and regenerator, can realize generating electricity, preheating and heating, the repetitious utilization of realization heat energy of first medium, the utility model has the advantages of simple structure, it is with low costs, its heat utilization rate and thermoelectric conversion rate can obtain very big improvement, and then make this low temperature heat energy power generation technique can be better in solar energy power generation, biomass energy electricity generation, renewable energy field such as ocean power generation, geothermal energy electricity generation, especially electric heat energy storage obtain more extensive application.

Drawings

FIG. 1 is a schematic structural diagram of an organic Rankine cycle power generation device of the present invention.

In the figure, 1-solar heat collector; 2-shell-and-tube heat exchanger; 3, a steam turbine; 4, a generator; 5, a condenser; 6-a first medium pump; 7-a heat regenerator; 8-double pipe heat exchanger; 9-a second medium pump; 10-a compressor; 11-a second reservoir; 12-a first reservoir; 13-throttle valve.

Detailed Description

The present invention will be described in detail with reference to the drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the utility model provides an organic rankine cycle power generation device, which comprises a shell-and-tube heat exchanger 2, a steam turbine 3, a condenser 5, a heat regenerator 7 and a solar heat collector 1; wherein the shell-and-tube heat exchanger 2, the steam turbine 3, the condenser 5, the heat regenerator 7 and the first medium pump 6 form a first medium circulation loop; the shell-and-tube heat exchanger 2, the solar heat collector 1 and the second medium pump 9 form a second medium circulation loop; the condenser 5, the compressor 10 and the heat regenerator 7 form a third medium circulation loop; the steam turbine 3 is connected with a generator 4; the second medium circulation loop heats the first medium in the shell-and-tube heat exchanger 2, so that the first medium forms steam, and the third medium circulation loop heats the first medium after doing work.

Specifically, a medium outlet of the shell-and-tube heat exchanger 2 in the first medium circulation loop is sequentially connected with a steam turbine 3, a condenser 5, a first medium pump 6 and a heat regenerator 7, and a first medium outlet of the heat regenerator 7 is connected with a first medium inlet of the heat exchanger 2. Preferably, a first oil reservoir tank 12 is further provided in the first medium circulation circuit.

And a second medium outlet of the solar heat collector 1 in the second medium circulation loop is connected with a heating inlet of the shell-and-tube heat exchanger 2, and a heating outlet of the shell-and-tube heat exchanger 2 is connected with a second medium inlet of the solar heat collector 1 through a second medium pump 9. The second medium circulation circuit further comprises a double pipe heat exchanger 8, which double pipe heat exchanger 8 is used for heating the first medium in the shell and tube heat exchanger 2. Specifically, a heating outlet of the shell-and-tube heat exchanger 2 is connected with a high-temperature inlet of the double-tube heat exchanger 8, a high-temperature outlet of the double-tube heat exchanger 8 is connected with a second medium inlet of the solar heat collector 1, a low-temperature inlet of the double-tube heat exchanger 8 is connected with a first medium outlet of the heat regenerator 7, and a low-temperature outlet of the double-tube heat exchanger 8 is connected with a first medium inlet of the shell-and-tube heat exchanger 2.

The utility model discloses in, be provided with second liquid storage pot 11 and choke valve 13 on the third medium circulation loop. The third medium circulation loop heats the first medium in the heat regenerator 7, and the heat is reused.

It should be noted that, in the present invention, the first medium is a superconducting liquid, the second medium is a heat transfer oil, and the third medium is an inorganic medium or a low-boiling-point organic medium. And the condenser 5 and the heat regenerator 7 both adopt double-flow-channel heat exchangers.

The utility model discloses a working process does:

the solar heat collector 1 collects heat energy, the heat energy is guided into the shell-and-tube heat exchanger 2, the first medium in the shell-and-tube heat exchanger 2 is heated, the first medium is heated to high-temperature and high-pressure steam, the steam is sprayed out from the steam nozzle to apply work to the turbine fan in the closed air passage in the steam turbine 3, and the corresponding power generator 4 is driven to generate power. The first medium after doing work is absorbed, cooled and condensed in the condenser 5, and then is sent to the heat regenerator 7 and the shell-and-tube heat exchanger 2 by the first medium pump 6 in sequence to complete one cycle.

After heat is collected, the second medium in the solar heat collector 1 generates high heat energy, the second medium enters the shell-and-tube heat exchanger 2 and then heats the first medium, and then the second medium heats and preheats the first medium which does work in the shell-and-tube heat exchanger 2 through the double-tube heat exchanger 8, so that secondary utilization of heat is realized.

The third medium serving as a coolant is evaporated in the condenser 5, absorbs the heat of the first medium, cools and condenses the first medium, and on the other hand, the evaporated third medium after absorbing the heat is compressed by the compressor 10 and then becomes a high-temperature and high-pressure medium flow which is sent to the heat regenerator 7 to heat the first medium in the heat regenerator 6.

It should be apparent to those skilled in the art that the above embodiments are only preferred embodiments of the present invention, and therefore, the modifications and changes that can be made by those skilled in the art to some parts of the present invention still embody the principles of the present invention, and the objects of the present invention are achieved, all falling within the scope of the present invention.

Claims

1. An organic Rankine cycle power generation device is characterized by comprising a shell-and-tube heat exchanger (2), a steam turbine (3), a condenser (5), a heat regenerator (7) and a solar heat collector (1); wherein the shell-and-tube heat exchanger (2), the steam turbine (3), the condenser (5), the heat regenerator (7) and the first medium pump (6) form a first medium circulation loop; the shell-and-tube heat exchanger (2), the solar heat collector (1) and the second medium pump (9) form a second medium circulation loop; the condenser (5), the compressor (10) and the heat regenerator (7) form a third medium circulation loop; the steam turbine (3) is connected with a generator (4); the second medium circulation loop heats the first medium in the shell-and-tube heat exchanger (2) so that the first medium forms steam, and the third medium circulation loop heats the first medium after doing work.

2. The organic Rankine cycle power generation device according to claim 1, wherein a steam turbine (3), a condenser (5), a first medium pump (6) and a regenerator (7) are connected in sequence to a medium outlet of the shell-and-tube heat exchanger (2) in the first medium circulation circuit, and an outlet of the regenerator (7) is connected to a medium inlet of the heat exchanger (2).

3. The orc power plant according to claim 2, wherein a first oil storage tank (12) is further provided in the first medium circuit.

4. The organic Rankine cycle power plant according to claim 1, characterized in that the second medium outlet of the solar collector (1) in the second medium circulation loop is connected to the heating inlet of the shell-and-tube heat exchanger (2), and the heating outlet of the shell-and-tube heat exchanger (2) is connected to the second medium inlet of the solar collector (1) by means of a second medium pump (9).

5. The organic Rankine cycle power plant according to claim 4, characterized in that the second medium circulation circuit further comprises a double pipe heat exchanger (8), the double pipe heat exchanger (8) being used for heating the first medium in the shell-and-tube heat exchanger (2).

6. The orc power plant according to claim 1, wherein a second reservoir (11) and a throttle valve (13) are provided on the third medium circulation circuit.

7. The orc power plant according to claim 1 or 6, wherein the third medium circuit heats the first medium in a regenerator (7).

8. The organic Rankine cycle power generation device according to claim 1, wherein the first medium is a superconducting liquid, the second medium is a heat transfer oil, and the third medium is an inorganic medium or a low-boiling-point organic medium.

9. The orc power plant according to claim 1, wherein the condenser (5) and the regenerator (7) each employ a dual-flow heat exchanger.