阅读说明：本技术 光热发电及热泵余热综合利用系统 (Photo-thermal power generation and heat pump waste heat comprehensive utilization system ) 是由 刘艳 张鹏飞 曹强 王昱凯 王玉静 于 2020-05-18 设计创作，主要内容包括：本申请涉及多能互补能量利用技术领域,尤其涉及一种光热发电及热泵余热综合利用系统。利用低温余热供热的电厂,单纯依靠低温余热进行供热,在供热需求较大时,电厂锅炉的低温余热不足以满足这种需求。本申请的光热发电及热泵余热综合利用系统,包括冷凝换热子系统、光热换热子系统和供热管网；一方面通过利用光热给供热管网加热,另一方面接收电厂锅炉的汽轮机排汽冷凝后放出的热量,通过热泵将热蒸汽中的能量输送至供热管网,实现了两种清洁能源的协同利用,节约了资源,对环境友好,同时满足了人们的供热需求。(The application relates to the technical field of multi-energy complementary energy utilization, in particular to a photo-thermal power generation and heat pump waste heat comprehensive utilization system. The power plant utilizing the low-temperature waste heat for supplying heat simply depends on the low-temperature waste heat for supplying heat, and when the heat supply demand is large, the low-temperature waste heat of the boiler of the power plant is not enough to meet the demand. The photo-thermal power generation and heat pump waste heat comprehensive utilization system comprises a condensation heat exchange subsystem, a photo-thermal heat exchange subsystem and a heat supply pipe network; on the one hand gives the heating pipe network heating through utilizing light and heat, and on the other hand receives the heat that emits after the steam turbine exhaust steam condensation of power plant's boiler, carries the energy in with the hot steam to the heating pipe network through the heat pump, has realized the utilization in coordination of two kinds of clean energy, has practiced thrift the resource, and is environment-friendly, has satisfied people's heat supply demand simultaneously.)

1. A photo-thermal power generation and heat pump waste heat comprehensive utilization system is characterized by comprising a condensation heat exchange subsystem, a photo-thermal heat exchange subsystem and a heat supply pipe network;

the condensation heat exchange subsystem is connected with the heat supply pipe network through a heat pump, and the photo-thermal heat exchange subsystem is connected with the heat supply pipe network through a heat exchanger;

the condensation heat exchange subsystem comprises a condenser and a condensation heat supply pipe network, the condenser is arranged in the condensation heat supply pipe network, circulating cooling water in the condenser absorbs latent heat of exhaust steam of the steam turbine and then flows into the heat pump, water in the heat supply pipe network is heated through the heat pump, the condensation heat supply pipe network is connected with the cooling tower, and the condensation heat exchange system is used for cooling steam turbine exhaust steam and reducing the loss of a cold source of the unit;

the photo-thermal heat exchange subsystem comprises a photo-thermal heat collector and a photo-thermal heat supply pipe network, wherein the photo-thermal heat collector is used for conducting photo-thermal to a heat supply working medium, and then the heat supply working medium is conveyed to the photo-thermal heat supply pipe network.

2. The photo-thermal power generation and heat pump waste heat comprehensive utilization system as claimed in claim 1, further comprising an ORC power generation subsystem, wherein the ORC power generation subsystem is connected with the photo-thermal heat supply pipe network through a heat exchanger, the ORC power generation subsystem comprises an ORC working medium pipe network, an ORC device and a generator, and the ORC device absorbs energy of the photo-thermal heat supply pipe network through a working medium in the ORC working medium pipe network for generating power for the generator.

3. The photo-thermal power generation and heat pump waste heat comprehensive utilization system of claim 1, further comprising a driving heat source subsystem, wherein the driving heat source subsystem leads out a driving pipe network from the photo-thermal heat supply pipe network, and the driving pipe network is connected into the photo-thermal heat collector through the heat pump in a back flow mode along a flow direction of a heat supply working medium.

4. The integrated photothermal power generation and heat pump waste heat utilization system according to claim 1, further comprising a water pump, wherein said water pump is disposed in said photothermal heat supply network and in said heat supply network.

5. The integrated photo-thermal power generation and heat pump waste heat utilization system of claim 1, further comprising a water valve, wherein the water valve is disposed in the photo-thermal heat supply pipe network.

6. The system for comprehensively utilizing the photo-thermal power generation and the heat pump waste heat as claimed in claim 1, further comprising a water replenishing pump, wherein the water replenishing pump is arranged in the photo-thermal heat supply pipe network.

7. The system for photo-thermal power generation and comprehensive utilization of heat pump waste heat according to claim 1, further comprising a sub-level heat supply pipe network, wherein the sub-level heat supply pipe network is connected with the heat supply pipe network through a sub-level heat exchange station.

8. The integrated photo-thermal power generation and heat pump waste heat utilization system of claim 1, further comprising a heater disposed in the heat supply network.

Technical Field

The application relates to the technical field of multi-energy complementary energy utilization, in particular to a photo-thermal power generation and heat pump waste heat comprehensive utilization system.

Background

In recent years, due to the development of industrialization, conventional energy such as fossil energy needs to be combusted, and a large amount of harmful substances such as soot and oxides are generated in the combustion process of fossil energy, so that very serious environmental pollution is caused, and people have attracted much attention.

With the gradual decrease of fossil energy reserves, how to improve the utilization efficiency of energy becomes the focus of attention in the industry. Especially in the field of power plants, a large amount of low-temperature waste heat such as waste water and waste gas generated by thermal power generation is not effectively utilized, some iron and steel enterprises need to start small coal-fired boilers with high energy consumption and low efficiency in winter heating or directly consume high-quality steam for heating, and the steam supply is difficult or even the industrial production is influenced due to the difference of the air consumption in winter and summer, so how to more efficiently utilize the low-temperature waste heat and not influence the industrial production becomes a technical problem to be solved urgently in the industry.

The power plant using the low-temperature waste heat for supplying heat improves the heat load utilization rate of the power plant, reduces the coal consumption, saves water, improves the operating economy of the power plant, and obtains better economic and social benefits at the same time. However, the heat supply is realized by only depending on the low-temperature waste heat, and when the heat supply demand is large, the low-temperature waste heat supply of the boiler of the power plant cannot meet the demand, so that an energy supply mode for making up a heat supply gap needs to be found.

Disclosure of Invention

The application provides a solar-thermal power generation and heat pump waste heat comprehensive utilization system to solve the problem that the current clean energy can not satisfy the heat supply demand completely.

The technical scheme adopted by the application is as follows:

a photo-thermal power generation and heat pump waste heat comprehensive utilization system comprises a condensation heat exchange subsystem, a photo-thermal heat exchange subsystem and a heat supply pipe network;

the condensation heat exchange subsystem is connected with the heat supply pipe network through a heat pump, and the photo-thermal heat exchange subsystem is connected with the heat supply pipe network through a heat exchanger;

the condensation heat exchange subsystem comprises a condenser and a condensation heat supply pipe network, the condenser is arranged in the condensation heat supply pipe network, circulating cooling water in the condenser absorbs latent heat of exhaust steam of the steam turbine and then flows into the heat pump, water in the heat supply pipe network is heated through the heat pump, the condensation heat supply pipe network is connected with the cooling tower, and the condensation heat exchange system is used for cooling steam turbine exhaust steam and reducing the loss of a cold source of the unit;

the photo-thermal heat exchange subsystem comprises a photo-thermal heat collector and a photo-thermal heat supply pipe network, wherein the photo-thermal heat collector is used for conducting photo-thermal to a heat supply working medium, and then the heat supply working medium is conveyed to the photo-thermal heat supply pipe network.

Optionally, the system further comprises an ORC power generation subsystem, wherein the ORC power generation subsystem is connected with the photo-thermal heat supply pipe network through a heat exchanger, the ORC power generation subsystem comprises an ORC working medium pipe network, an ORC device and a power generator, and the ORC device absorbs energy of the photo-thermal heat supply pipe network through working media in the ORC working medium pipe network and is used for generating power for the power generator.

Optionally, the system further comprises a driving heat source subsystem, wherein the driving heat source subsystem leads out a driving pipe network from the photo-thermal heat supply pipe network, and the driving pipe network passes through the heat pump along the flow direction of the heat supply working medium and then is connected into the photo-thermal heat collector in a backflow mode.

Optionally, still include the water pump, the water pump sets up in the light and heat supply pipe network and in the heat supply pipe network.

Optionally, still include the water valve, the water valve setting is in the light and heat supply pipe network.

Optionally, still include the moisturizing pump, the moisturizing pump sets up in the light and heat supply pipe network.

Optionally, the system further comprises a sub-level heat supply pipe network, and the sub-level heat supply pipe network is connected with the heat supply pipe network through a sub-level heat exchange station.

Optionally, the heat supply system further comprises a heater, wherein the heater is arranged in the heat supply pipe network.

The technical scheme of the application has the following beneficial effects:

the photo-thermal power generation and heat pump waste heat comprehensive utilization system comprises a condensation heat exchange subsystem, a photo-thermal heat exchange subsystem and a heat supply pipe network; on the one hand gives the heating pipe network heating through utilizing light and heat, and on the other hand receives the hot steam that the steam turbine of power plant's boiler discharged, carries the energy in with hot steam to the heating pipe network through the heat pump, has realized the utilization in coordination of two kinds of clean energy, has practiced thrift the resource, and is friendly to the environment, has satisfied people's heat supply demand simultaneously.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present application;

FIG. 2 is a schematic structural diagram of another embodiment of the present application;

illustration of the drawings:

the system comprises a condensation heat exchange subsystem 1, a condenser 11, a condensation heat supply pipe network 12, a photo-thermal heat exchange subsystem 2, a photo-thermal heat collector 21, a photo-thermal heat supply pipe network 22, a heat supply pipe network 3, a heat exchanger 4, a heat pump 5, a heat source driving subsystem 6, an ORC power generation subsystem 7 and a heat supply pipe network 8.

Detailed Description

Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.

Referring to fig. 1, a schematic structural diagram of an embodiment of the present application is shown.

The system for photo-thermal power generation and heat pump waste heat comprehensive utilization comprises a condensation heat exchange subsystem 1, a photo-thermal heat exchange subsystem 2 and a heat supply pipe network 3;

the condensation heat exchange subsystem 1 is connected with the heat supply pipe network 3 through a heat pump 5, and the photo-thermal heat exchange subsystem 2 is connected with the heat supply pipe network 3 through a heat exchanger 4;

the condensation heat exchange subsystem 1 comprises a condenser 11 and a condensation heat supply pipe network 12, the condenser 11 is arranged in the condensation heat supply pipe network 12, circulating cooling water in the condenser 11 absorbs latent heat of exhaust steam of a steam turbine and then flows into the heat pump 5, water in the heat supply pipe network 3 is heated through the heat pump 5, the condensation heat supply pipe network 12 is connected with a cooling tower, and the condensation heat exchange system is used for cooling steam turbine exhaust steam and reducing the loss of a cold source of a unit;

the photo-thermal heat exchange subsystem 2 comprises a photo-thermal heat collector 21 and a photo-thermal heat supply pipe network 22, wherein the photo-thermal heat collector 21 is used for conducting photo-thermal to a heat supply working medium, and then conveying the heat supply working medium to the photo-thermal heat supply pipe network 22.

In this embodiment, condensation heat transfer subsystem 1 is used for collecting the steam energy that the steam turbine discharged, because steam itself contains some energy, this part of energy has been lost usually, does not have recycle, and this embodiment is through retrieving this part of steam, carries the energy to heat supply pipe network 3 through heat pump 5, is favorable to the energy saving, and the environmental protection is clean moreover, has satisfied some heat supply pipe network 3's energy demand. In addition, the photo-thermal heat collector 21 absorbs the energy of the sunlight, and transmits the energy to the photo-thermal heat supply network 22 through the heat supply working medium, and then the energy is transmitted to the heat supply network 3 through the heat exchanger 4.

Optionally, the system further comprises an ORC power generation subsystem 7, wherein the ORC power generation subsystem 7 is connected with the photo-thermal heat supply network 22 through a heat exchanger 4, the ORC power generation subsystem 7 comprises an ORC working medium network, an ORC device and a generator, and the ORC device absorbs energy of the photo-thermal heat supply network 22 through a working medium in the ORC working medium network and is used for generating power for the generator.

Referring to fig. 2, a schematic structural diagram of another embodiment of the present application is shown, in this embodiment, in order to utilize the photo-thermal energy more efficiently, a part of the energy in the photo-thermal heating network 22 is diverted to the ORC power generation subsystem 7, and the energy is converted into the operating energy of the generator by the ORC device, and the generator generates electricity to generate electric energy.

Optionally, the system further comprises a driving heat source subsystem 6, wherein the driving heat source subsystem 6 leads out a driving pipe network from the photo-thermal heat supply pipe network 22, and the driving pipe network passes through the heat pump 5 along the flow direction of the heat supply working medium and then is connected into the photo-thermal heat collector 21 in a backflow mode.

With reference to fig. 2, in this embodiment, the driving heat source subsystem 6 is configured to drive the heat pump 5 to operate, and the heat pump 5 enters a normal working state after absorbing energy of the driving heat source subsystem 6, and transmits energy of the condensation heat exchange subsystem 1 to the heat supply pipe network 3.

Optionally, still include the water pump, the water pump sets up in the light and heat supply pipe network 22 and in the heat supply pipe network 3.

The water pump is arranged to facilitate the water circulation flow in the photo-thermal heat supply pipe network 22 and the heat supply pipe network 3 and has certain pressure and flow velocity, so that the adjustment of the hot water supply level is facilitated.

Optionally, the system further comprises a water valve, and the water valve is arranged in the photothermal heat supply pipe network 22.

Optionally, still include the moisturizing pump, the moisturizing pump sets up in light and heat heating pipe network 22.

Optionally, the system further comprises a sub-level heat supply pipe network 8, wherein the sub-level heat supply pipe network 8 is connected with the heat supply pipe network 3 through a sub-level heat exchange station.

Optionally, the system further comprises a heater, and the heater is arranged in the heat supply pipe network 3.

The photo-thermal power generation and heat pump waste heat comprehensive utilization system comprises a condensation heat exchange subsystem 1, a photo-thermal heat exchange subsystem 2 and a heat supply pipe network 3; on the one hand gives heating pipe network 3 heating through utilizing light and heat, and on the other hand receives the heat that the steam turbine steam exhaust of power plant's boiler emitted, carries the energy in with the hot steam to heating pipe network 3 through heat pump 5, has realized the utilization in coordination of two kinds of clean energy, has practiced thrift the resource, and is environment-friendly, has satisfied people's heat supply demand simultaneously.

The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.