CN201487931U - Mixed heat energy saving device for solar boiler - Google Patents

Abstract

The utility model relates to an energy-saving device for mixing heat of solar energy and boilers, in particular to a heat mixing device for solar energy and boilers used in greenhouses. The device is to connect the hot water barrel of the solar heat collector with the water inlet of the coal-fired boiler through a gate valve and a pipeline. The utility model adopts a mixed heating method, which can ensure the heat supply of the greenhouse no matter what the weather is, and make full use of the heat energy provided by the solar energy. When it is cloudy or rainy or the sunlight is insufficient in winter, the combustion volume of the boiler can be increased to meet the needs of the greenhouse. Supplementary heat temperature. The device uses a solar water heater to preheat the cold water entering the coal-fired boiler, so that the water entering the coal-fired boiler has a higher temperature, thereby greatly reducing coal consumption and saving energy costs. Reduce carbon dioxide, sulfur dioxide emissions.

Description

Mixed heat energy saving device for solar boiler

technical field

The utility model relates to an energy-saving device for mixing heat of solar energy and a boiler, in particular to a heat mixing device for solar energy and boiler used in greenhouses.

Background technique

The daily coal consumption of steam boilers in winter is relatively large, especially in cold northern regions, hotels, saunas, showers, restaurants, factories and other coal-fired boilers need coal for production and domestic hot water, and consume a large amount of non-renewable energy every year ——Coal is burned, and a large amount of harmful gases such as carbon dioxide and sulfur dioxide are emitted, which have adverse effects on the human body and the atmospheric environment. The current global implementation of "energy saving and emission reduction" aims to reduce energy consumption and reduce pollution emissions. Generally, steam boilers use coal to heat cold water at about 10°C to above 100°C and convert it into steam. From a physical point of view, water has a large heat capacity at a low temperature. Therefore, the main energy consumption of a steam boiler is in the stage of heating low-temperature water.

Contents of the invention

The technical problem to be solved by the utility model is to provide a boiler and solar heat mixing energy-saving device, the device has a simple structure, can greatly reduce the consumption of coal, reduce the emission of harmful gases, and at the same time reduce the heating cost of the coal-fired boiler .

The solution adopted to solve the technical problem of the utility model is: the hot water barrel of the solar heat collector is connected with the water inlet of the coal-fired boiler through a gate valve and a pipeline. The water entering the coal-fired boiler is firstly preheated in the solar collector, thereby greatly reducing coal consumption.

The lower part of the hot water tank in this heat mixing energy-saving device is connected to the cold water replenishment tank through a pipeline, and two gate valves are installed on the pipeline leading from the hot water tank to the coal-fired boiler, and the cold water supplement tank is connected between the two gate valves through a tee and a pipeline . When the boiler does not need to be heated, the hot water from the hot water barrel to the boiler can be cut off through the tee and the gate valve, and the hot water in the hot water barrel of the solar water heater can be used for people to bathe, etc.; Combined water supply.

In addition, another gate valve is installed on the pipe leading to the two gate valves between the hot water tank and the coal-fired boiler to make the water supply operation more convenient; the water outlet of the coal-fired boiler is connected to the heating element of the greenhouse, thus becoming Hybrid heating system for greenhouses.

The beneficial effect of the utility model is that: the hot water tank is heated by the solar heat collector, and the problem of low water inlet temperature of the boiler is solved. At the same time, a tee and three gate valves are set on the hot water outlet pipeline of the solar water heater. When the greenhouse does not need to be heated, the tee and the gate valve are disconnected from the piping system of the boiler, and the solar-heated water heater can be used for bathing. The solar water heater is used to preheat the cold water entering the coal-fired boiler, so that the water entering the coal-fired boiler has a higher temperature, thereby reducing energy consumption and saving the use cost of the boiler. According to experimental calculations, using solar energy to preheat boiler water to above 60°C can reduce boiler energy consumption by at least 40% to 80%. Judging from the data during the commissioning period of the installed equipment in the greenhouse, the temperature of the preheating water has reached above 80 °C.

Description of drawings

Fig. 1 is the structural representation of the utility model.

The labels in the figure are: solar heat collector 1, upper circulation pipe 2, hot water tank 3, cold water replenishment tank 4, tee connecting pipe 5, gate valve 6, coal-fired boiler 7, heat preservation steam pipe 8, and greenhouse heating element 9.

Detailed ways

Referring to Fig. 1, the solar heat collector 1 is connected to the hot water tank 3 through the upper circulation pipe 2, and the outlet of the hot water tank 3 is connected to the water inlet of the coal-fired boiler 7 through two gate valves 6 on the pipeline. The hot water outlet of the coal-fired boiler 7 can be connected to various heating elements, such as the greenhouse heating element 9 shown in this embodiment, to heat the greenhouse when the air temperature is low. The connection mode of the pipeline in this device is that the bottom of the hot water tank 3 is connected to the cold water replenishment tank 4 through the pipeline, and two gate valves 6 are installed on the pipeline for delivering hot water from the hot water tank to the coal-fired boiler, between the two gate valves 6 The cold water make-up tank 4 is connected to the three-way connecting pipe 5 and the pipeline, and another gate valve 6 is installed on the pipeline leading to the cold water making-up tank 4 from the three-way connecting pipe 5, so that the use and control of the mixed heat energy-saving device are more convenient ,flexible.

Claims (3)

1. A solar boiler heat mixing energy-saving device is characterized in that: the hot water bucket of the solar collector is connected with the water inlet of the coal-fired boiler through a gate valve and a pipeline. 2. The heat mixing energy-saving device for solar boilers according to claim 1, characterized in that: the bottom of the hot water tank is connected to the cold water replenishment tank through pipelines, and two gate valves are installed on the pipeline leading to the coal-fired boiler from the hot water tank. The two gate valves are connected to the cold water make-up tank through a tee and a pipeline. 3. The mixed heat energy-saving device for solar boilers according to claim 1 is characterized in that: another gate valve is also installed on the pipeline of the two gate valves between the cold water replenishment tank leading to the hot water barrel and the coal-fired boiler; The water outlet is connected to the greenhouse heating element.

Images