Multi-source coupling combined cooling heating and power supply system

Abstract

The utility model discloses a multi-source coupling combined cooling heating and power system which comprises an optical firewood storage system and a methanol flameless heating system. The optical firewood storage system provides a working power supply for the methanol flameless heating system through a first alternating current power supply line; the methanol flame-free heating system provides heat for the optical storage diesel system through the first heat supply pipeline, and provides heat for a heat load of the user load system through the second heat supply pipeline; the optical firewood storage system, the methanol flameless heating system and the user load system are respectively connected with the remote monitoring system through communication lines; the utility model has the advantages that the light-stored firewood system and the methanol flameless heating system are combined, low-carbon clean electric power and heating power are comprehensively provided for users, methanol fuel is selected to share the heat supply task, the safety and the heat efficiency are improved by using normal-pressure flameless heating, and meanwhile, the whole system is coupled, so that the energy-saving and environment-friendly effects are realized. The device is simple in structure, miniaturized, low in cost and easy to implement.

Description

Technical Field

[0001] The utility model relates to a multi-source coupled cooling, heating and power cogeneration system, specifically an electric heat supply system coupling a light-storage-diesel system and a methanol flameless heating system, belonging to the technical field of cooling, heating and power cogeneration systems. Background Art

[0002] Energy transformation has led to the continuous changes and development of energy supply and consumption patterns, and multi-energy complementary integrated optimization has become an important breakthrough and transformation direction. Facing the various energy needs of end users, the integrated energy system characterized by the coordinated and efficient use of conventional energy and new energy is an important link. Its goal is to achieve a clean, low-carbon, safe and efficient modern energy system by building an information-connected smart energy system. The integrated energy system achieves multi-energy complementarity and coordinated supply through the coordinated development and utilization of distributed energy and traditional energy, and through natural gas trigeneration, distributed renewable energy, waste heat cascade utilization and energy microgrids. It has a wide market demand in industrial parks, business districts, residential areas, large buildings and public facilities, island areas and other scenarios.

[0003] However, many user scenarios do not require large-scale equipment and complex energy supply systems, which are mainly related to the scale and composition of user loads, energy use methods and resource conditions, such as fixed camps, industrial plants, isolated island areas, etc. The current common integrated energy system is costly for such users, and the system process and operation and maintenance are too complicated. First, many user scenarios are beyond the reach of energy pipelines such as natural gas. Sometimes, even if the conditions for natural gas utilization are met, the gas opening fee is expensive, which is not economical for general users. Secondly, the current heating technology of alcohol-based fuel boilers (such as methanol boilers) relies on direct combustion to obtain heat energy. The main disadvantage is that it requires high boiler combustion sufficiency, otherwise it is very easy to produce poisons, low efficiency, insufficient firepower, instability and damage to the burner parts. Third, regional users have a large amount of heating in the cold season. Due to the limitations of wind, solar, and storage power and energy density, using wind, solar, and storage diesel completely will lead to over-concentration of resources and power configuration and uneconomical capacity. In addition, diesel power generation will also increase pollution emissions and energy conversion losses. New energy coupling methods can be found to solve the problem. Summary of the invention

[0004] In order to solve the above problems, the utility model designs a multi-source coupled combined heat and power system, which combines the solar-storage-diesel system with the methanol flameless heating system to provide users with comprehensive low-carbon clean electricity and heat, selects methanol fuel to share the heating task, and utilizes normal pressure flameless heating to improve safety and thermal efficiency, while coupling the overall system, with a simple structure, miniaturized equipment, low cost, and easy implementation.

[0005] The technical solution of the utility model is:

[0006] A multi-source coupled cooling, heating and power cogeneration system, including a solar-diesel storage system and a methanol flameless heating system; wherein:

[0007] The solar-diesel-storage system provides working power to the methanol flameless heating system through a first AC power supply line, and provides AC power and DC power to the user load system through a second AC power supply line and a DC power supply line respectively;

[0008] The methanol flameless heating system provides heat to the solar-storage-diesel system through the first heat supply pipeline for heat preservation and preheating, and provides heat to the heat load of the user load system through the second heat supply pipeline;

[0009] The solar-diesel storage system, methanol flameless heating system and user load system are respectively connected to the remote monitoring system via communication lines.

[0010] Furthermore, the photovoltaic-diesel-storage system includes a photovoltaic power generation unit, an energy storage unit, a bidirectional converter, a diesel generator set and an energy management unit. The photovoltaic power generation unit is connected in parallel with the energy storage unit in DC, and is DC connected to the DC power supply line, and is AC connected to the second AC power supply line and the diesel generator set via the bidirectional converter.

[0011] The energy management unit of the photovoltaic-diesel-storage system coordinates and controls the photovoltaic power generation unit, energy storage unit, bidirectional converter, and diesel generator set to ensure that the first AC power supply line, the second AC power supply line, and the DC power supply line provide uninterrupted power supply; the charging power supply of the energy storage unit is the photovoltaic power generation unit and the diesel generator set, and the photovoltaic power generation unit is used first; when the photovoltaic power generation unit is insufficient in power, the energy storage unit discharges to supplement the power; when the photovoltaic power generation and energy storage units are insufficient to support the load requirements, the diesel generator set runs to supplement the power; when the photovoltaic power generation and energy storage units meet the load requirements, the diesel generator set exits operation; when the power grid is available, the mains power supply is connected to the photovoltaic-diesel-storage system, and the diesel generator set (through switching) provides power for the first AC power supply line and the second AC power supply line.

[0012] The methanol flameless heating system is provided with a heating device, and may adopt one of the following utility model patents: a flameless oxidation heating reactor with authorization announcement number CN 206951205 U, or a methanol flameless heating reactor with authorization announcement number CN 212158248 U, or a methanol flameless heating equipment with authorization announcement number CN 212133387 U.

[0013] The methanol flameless heating system is provided with a blower, a methanol delivery pump, an AC solenoid valve, a circulating water pump, a power converter, a methanol atomizing nozzle, a temperature sensor, a leakage alarm, an exhaust gas emission pressure monitoring sensor, an automatic protection / control device, an AC working power supply and a DC working power supply, wherein the AC working power supply is provided by the first AC power supply line, the blower provides the air intake required for the heating reaction, the methanol delivery pump ensures the methanol flow supply, the AC solenoid valve is used for on-off control and quick-cut protection of the methanol main pipeline, and the circulating water pump provides thermal water circulation power for users; the power converter steps down and rectifies the AC power provided by the first AC power supply line and converts it into a DC power supply, providing a DC working power supply for the methanol atomizing nozzle, the temperature sensor, the leakage alarm, the exhaust gas emission pressure monitoring sensor, and the automatic protection / control device.

[0014] The user load system includes AC load, DC load, user cooling load and user heating load. The AC load includes an electric air conditioner powered by the second AC power supply line, and the DC load is powered by the DC power supply line; the user cooling load is realized by the electric air conditioner; the user heating load is circulated by the second heating pipeline; the preheating and insulation heat of the solar-storage-diesel system is provided by the first heating pipeline;

[0015] The remote monitoring system is provided with a workstation, an engineer station and a coordination controller; the remote monitoring system collects data on the status and operation of the solar-diesel-storage system, the methanol flameless heating system and the user load system; the workstation performs monitoring and analysis, and real-time operation and adjustment of system operation; the engineer station performs system parameter setting, information query and data maintenance; the coordination controller performs unified operation scheduling and coordination management of the solar-diesel-storage system, the methanol flameless heating system and the user load system.

[0016] (1) By coupling the solar-diesel storage system with methanol flameless heating, a multi-energy complementary cold, heat and electricity supply system is realized, with a simple system structure and miniaturized equipment;

[0017] (2) The system uses a high proportion of clean energy. Methanol is more environmentally friendly than other energy sources. The safety and thermal efficiency of normal pressure flameless heating are better than those of alcohol-based combustion boilers. The thermal load is shared by methanol, which significantly reduces the energy consumption and emissions of other power sources.

[0018] (3) Since methanol has no flame and produces low noise and colorless exhaust, it reduces the noise and smoke caused by diesel power generation, thus being more conducive to the concealment requirements of special users;

[0019] (4) Methanol is a surplus chemical product. The raw materials are sufficient and easy to obtain, the supply is stable, and it is easy to store. There is no pipeline gas opening fee, which significantly reduces the cost. The system is also more flexible and widely applicable.

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A multi-source coupled cooling, heating and power cogeneration system according to an embodiment of the utility model. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0023] like Figure 1 As shown, a multi-source coupled cooling, heating and power cogeneration system includes a solar-diesel storage system and a methanol flameless heating system; wherein,

[0024] The solar-diesel-storage system provides working power to the methanol flameless heating system through a first AC power supply line, and provides AC power and DC power to the user load system through a second AC power supply line and a DC power supply line respectively;

[0025] The methanol flameless heating system provides heat to the solar-storage-diesel system through the first heat supply pipeline for heat preservation and preheating, and provides heat to the heat load of the user load system through the second heat supply pipeline;

[0026] The solar-diesel storage system, methanol flameless heating system and user load system are respectively connected to the remote monitoring system via communication lines.

[0027] Furthermore, the photovoltaic-diesel-storage system includes a photovoltaic power generation unit, an energy storage unit, a bidirectional converter, a diesel generator set and an energy management unit. The photovoltaic power generation unit is connected in parallel with the energy storage unit in DC, and is DC connected to the DC power supply line, and is AC connected to the second AC power supply line and the diesel generator set via the bidirectional converter.

[0028] The energy management unit of the photovoltaic-diesel-storage system coordinates and controls the photovoltaic power generation unit, energy storage unit, bidirectional converter, and diesel generator set to ensure that the first AC power supply line, the second AC power supply line, and the DC power supply line provide uninterrupted power supply; the charging power supply of the energy storage unit is the photovoltaic power generation unit and the diesel generator set, and the photovoltaic power generation unit is used first; when the photovoltaic power generation unit is insufficient, the energy storage unit discharges to supplement the power; when the photovoltaic power generation and energy storage units are insufficient to support the load requirements, the diesel generator set operates to supplement the power; when the photovoltaic power generation and energy storage units meet the load requirements, the diesel generator set exits operation; when the power grid is available, the mains power supply is connected to the photovoltaic-diesel-storage system, and the diesel generator set (through switching) provides power for the first AC power supply line and the second AC power supply line;

[0029] The methanol flameless heating system is provided with a heating device, and one of the following utility model patents may be adopted: a flameless oxidation heating reactor with an authorization announcement number of CN 206951205 U, or a methanol flameless heating reactor with an authorization announcement number of CN 212158248 U, or a methanol flameless heating device with an authorization announcement number of CN 212133387 U; the working principle is that methanol and air in a certain proportion are heated by catalytic oxidation reaction on the catalyst surface, and heat is exchanged with the circulating medium through a tube structure; in addition to having the advantages of a traditional boiler, there is no burner link, no ignition operation, and a distributed tube is used instead of a furnace, thereby enhancing safety, miniaturization of the equipment, low manufacturing cost, extremely low emission of nitrogen oxides and sulfides, and low carbon and environmental protection;

[0030] The methanol flameless heating system includes a main heating unit, a control panel, a methanol storage tank, a methanol delivery pump, an AC solenoid valve, a pressure regulating valve, a methanol filter element, a one-way check valve, an atomizing nozzle, a blower, a circulating water pump, a temperature sensor, a leakage alarm, an exhaust gas emission pressure monitoring sensor, etc. The methanol storage tank, methanol delivery pump, AC solenoid valve, pressure regulating valve, methanol filter element, one-way check valve, and atomizing nozzle are connected in series in sequence through pipelines and connected to the main heating unit; the blower is connected to the main heating unit through a pipeline; the circulating water pump is connected to the heat exchange output of the main heating unit through a pipeline to provide thermal circulation for users; the first AC power supply line supplies power to the control panel; the control panel provides AC working power to the blower, methanol delivery pump, AC solenoid valve, pressure regulating valve, and circulating water pump; the control panel converts AC power into DC power and provides DC working power to the atomizing nozzle, temperature sensor, leakage alarm, and exhaust gas emission pressure monitoring sensor; the temperature sensor monitors the reaction temperature of the main heating unit; the leakage alarm monitors the gas leakage of the main heating unit; the exhaust gas emission pressure monitoring sensor monitors the exhaust gas discharge pressure of the main heating unit;

[0031] The user load system includes AC load, DC load, user cooling load and user heating load. The AC load (including electric air conditioner) is powered by the second AC power supply line, and the DC load is powered by the DC power supply line; the user cooling load is realized by electric air conditioner; the user heating load is circulated by the second heating pipeline; the preheating and insulation heat of the solar-storage-diesel system is provided by the first heating pipeline;

[0032] The remote monitoring system is provided with a workstation, an engineer station and a coordination controller; the remote monitoring system collects data on the status and operation of the solar-diesel-storage system, the methanol flameless heating system and the user load system; the workstation performs monitoring and analysis, and real-time operation and adjustment of system operation; the engineer station performs system parameter setting, information query and data maintenance; the coordination controller performs unified operation scheduling and coordination management of the solar-diesel-storage system, the methanol flameless heating system and the user load system.

[0033] The above disclosure is only a specific embodiment of the utility model and is not intended to limit the utility model. Those skilled in the art may modify the technical solutions described in the embodiments, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the ideas and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. A multi-source coupled cooling, heating and power system, characterized in that: It includes a solar-diesel storage system and a methanol flameless heating system; The solar-diesel-storage system provides working power to the methanol flameless heating system through a first AC power supply line, and provides AC power and DC power to the user load system through a second AC power supply line and a DC power supply line respectively; The methanol flameless heating system provides heat to the solar-storage-diesel system through a first heat supply pipeline for heat preservation and preheating, and provides heat to the heat load of the user load system through a second heat supply pipeline; The solar-diesel storage system, methanol flameless heating system and user load system are respectively connected to the remote monitoring system via communication lines.

2. A multi-source coupled cooling, heating and power system according to claim 1, characterized in that: The photovoltaic-diesel-storage system includes a photovoltaic power generation unit, an energy storage unit, a bidirectional converter, a diesel generator set and an energy management unit. The photovoltaic power generation unit is connected in parallel with the energy storage unit in DC, and is DC connected to the DC power supply line, and is AC connected to the second AC power supply line and the diesel generator set via the bidirectional converter.

3. A multi-source coupled cooling, heating and power cogeneration system according to claim 2, characterized in that: The energy management unit of the photovoltaic-storage-diesel system coordinates and controls the photovoltaic power generation unit, energy storage unit, bidirectional converter, and diesel generator set to ensure that the first AC power supply line, the second AC power supply line, and the DC power supply line provide uninterrupted power supply; the charging power source of the energy storage unit is the photovoltaic power generation unit and the diesel generator set, and the photovoltaic power generation unit is used first; When the photovoltaic power generation unit is insufficient, the energy storage unit discharges to supplement the electricity; when the photovoltaic power generation and energy storage unit are insufficient to support the load needs, the diesel generator set runs to supplement the electricity; When the photovoltaic power generation and energy storage units meet the load requirements, the diesel generator set will stop running; When the power grid is available, the mains power supply is connected to the solar-diesel-storage system, and together with the diesel generator set, provides power for the first AC power supply line and the second AC power supply line.

4. The multi-source coupled cooling, heating and power system according to claim 1, characterized in that: The methanol flameless heating system is provided with a heating device.

5. The multi-source coupled cooling, heating and power system according to claim 1, characterized in that: The methanol flameless heating system is provided with a blower, a methanol delivery pump, an AC solenoid valve, a circulating water pump, a power converter, a methanol atomizing nozzle, a temperature sensor, a leakage alarm, an exhaust gas emission pressure monitoring sensor, an automatic protection / control device, an AC working power supply and a DC working power supply, wherein the AC working power supply is provided by the first AC power supply line; the power converter steps down and rectifies the AC power provided by the first AC power supply line and converts it into a DC power supply, providing a DC working power supply for the methanol atomizing nozzle, the temperature sensor, the leakage alarm, the exhaust gas emission pressure monitoring sensor, and the automatic protection / control device.

6. The multi-source coupled cooling, heating and power system according to claim 1, characterized in that: The user load system includes an AC load, a DC load, a user cooling load and a user heating load, wherein the AC load is powered by the second AC power supply line, and the DC load is powered by the DC power supply line; the user cooling load is realized by an electric air conditioner; The user heating load is provided by the second heating pipeline circulation; the preheating and insulation heat of the solar-storage-diesel system is provided by the first heating pipeline.

7. The multi-source coupled cooling, heating and power system according to claim 1, characterized in that: The remote monitoring system is provided with a workstation, an engineer station and a coordination controller; the remote monitoring system collects data on the status and operation of the solar-diesel-storage system, the methanol flameless heating system and the user load system; the workstation performs monitoring and analysis, and real-time operation and adjustment of system operation; the engineer station performs system parameter setting, information query and data maintenance; the coordination controller performs unified operation scheduling and coordination management of the solar-diesel-storage system, the methanol flameless heating system and the user load system.

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