CN204669250U - A kind of temperature difference electricity generation device and illuminator utilizing boiler slag removal used heat - Google Patents

Abstract

The utility model discloses a thermoelectric power generation device utilizing boiler slag discharge waste heat, which comprises a heat collecting plate fixed on the water wall of a cold ash hopper, and a thermoelectric generator is arranged on the outside of the heat collecting plate. A heat dissipation plate is arranged on the outer side of the generator, the hot end of the thermoelectric generator is fixedly connected to the heat collecting plate, and the cold end of the thermoelectric generator is fixedly connected to the heat dissipation plate. The utility model converts part of the waste heat of the slag into electric energy through the thermoelectric material, which not only improves the utilization rate of heat, but also saves electricity consumption; Prevent over-temperature deformation of the cold ash hopper. Further adopting trapezoidal heat collecting plate, the heat absorbing area is larger than the heat releasing area, which helps to prolong the heat releasing time.

Description

A thermoelectric power generation device and lighting system using waste heat from boiler slag discharge

technical field

The utility model relates to the technical field of energy saving and emission reduction, in particular to a thermoelectric power generation device and a lighting system utilizing boiler slag discharge waste heat.

Background technique

my country consumes a large amount of energy for power generation every year, of which thermal power accounts for 70%, which has caused serious environmental problems and energy pressure. At present, the utilization rate of fuel combustion heat in power stations is very low, and more than 60% of the heat is dissipated into the air through smoke and slag discharge, which will cause a huge waste of resources.

The cold ash hopper of the traditional W flame boiler is directly exposed to the air. When the boiler slag enters the cold ash hopper, the temperature of the cold ash hopper reaches about 120°C. A thermoelectric power generation device can be installed outside the cold ash hopper to turn the cold The heat discharged in the air by the ash hopper is converted into electrical energy, which achieves the purpose of energy saving and environmental protection.

Thermoelectric power generation is a new type of power generation, using the Seebeck effect to directly convert heat energy into electrical energy. Temperature difference, so a DC voltage is generated in this semiconductor device.

Contents of the invention

In order to solve the technical problems in the known technology, the utility model provides a thermoelectric power generation device using boiler slag discharge waste heat, which can be used to realize the waste heat recovery of power plant boiler slag discharge, and prevent the cold ash hopper from over-temperature deformation; The use of the thermoelectric power generation device to provide electric energy for the lighting system can save part of the lighting power consumption.

A technical solution adopted by the utility model to solve the technical problems existing in the known technology is: a thermoelectric power generation device using boiler slag discharge waste heat, including a heat collecting plate fixed on the water wall of the cold ash hopper. The outside of the heat collecting plate is provided with a thermoelectric generator, and a cooling plate is arranged outside the thermoelectric generator. The hot end of the thermoelectric generator is fixedly connected to the heat collecting plate, and the cold end of the thermoelectric generator is connected to the The heat dissipation plate is fixedly connected.

The elevation of the heat collecting plate is trapezoidal, and the lower bottom of the trapezoid is adjacent to the water-cooled wall of the cold ash hopper.

The heat collecting plate is provided with a flange extending to the cold ash hopper, and the heat collecting plate is fastened on the water wall of the cold ash hopper.

An insulating body is installed around the outside of the heat collecting plate.

Fins are provided on the outer side of the heat dissipation plate.

The thermoelectric generator is formed by arranging multiple thermoelectric modules.

Another technical solution adopted by the utility model to solve the technical problems existing in the known technology is: a lighting system using the above-mentioned thermoelectric power generation device using boiler slag discharge waste heat, including the thermoelectric power generation device connected in sequence, the inverter transformers, voltage regulators and lights.

The advantages and positive effects of the utility model are: a thermoelectric power generation device is installed on the outside of the cold ash bucket, and the waste heat of the slag is converted into electric energy through thermoelectric materials, which not only improves the utilization rate of heat, but also saves electricity; Compared with releasing heat directly into the air, the utility model has stronger heat conduction ability, which helps to prevent the over-temperature deformation of the cold ash hopper. Further adopt trapezoidal heat collecting plate, the heat absorption area is larger than the heat release area, which helps to prolong the heat release time.

Description of drawings

Fig. 1 is a structural schematic diagram of a thermoelectric power generation device utilizing boiler slagging waste heat according to the utility model;

Fig. 2 is a working structural diagram of the lighting system using the thermoelectric power generation device shown in Fig. 1 of the present invention.

In the figure: 1. Cold ash hopper; 2. Heat collecting plate; 3. Thermoelectric generator; 4. Radiating plate; 5. Thermoelectric generating device; 6. Inverter; 7. Voltage regulator; 8. Lighting lamp.

Detailed ways

In order to further understand the invention content, characteristics and effects of the present utility model, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

Please refer to Fig. 1, a thermoelectric power generation device utilizing boiler slagging waste heat, including a heat collecting plate 2 fixed on the water wall of the cold ash hopper 1, and a thermoelectric generator 3 is arranged on the outside of the heat collecting plate 2, The outer side of the thermoelectric generator 3 is provided with a cooling plate 4, the hot end of the thermoelectric generator 3 is fixed to the heat collecting plate 2, and the cold end of the thermoelectric generator 3 is fixed to the cooling plate 4. catch.

In this embodiment, the elevation of the heat collecting plate 2 is trapezoidal, and the lower bottom of the trapezoid is adjacent to the water wall of the cold ash hopper 1, so that the end with a larger area is connected to the cold ash hopper 1, The smaller end is connected to the thermoelectric generator 3, so that the heat absorbing area of the heat collecting plate 2 is larger than the heat releasing area, which helps to prolong its heat releasing time. The heat collecting plate 2 is provided with a flange extending to the cold ash hopper 1, and the heat collecting plate 2 is buckled on the water wall of the cold ash hopper 1, which can further increase the heat absorption area of the heat collecting plate 2 , and can improve the installation stability of the heat collecting plate 2. An insulating body is installed around the outside of the heat collecting plate 2, which can prevent the heat collecting plate from dissipating heat to the environment. In this embodiment, the insulation body is made of glass insulation wool. Fins are provided on the outside of the heat dissipation plate 4 to further reduce its temperature. The thermoelectric generator 3 is formed by arranging a plurality of thermoelectric modules.

Please refer to FIG. 2 , a lighting system using the above-mentioned thermoelectric power generation device using waste heat from boiler slag discharge, including the thermoelectric power generation device 5 , inverter 6 , voltage regulator 7 and lighting lamp 8 connected in sequence. Lighting lamp 8 adopts energy-saving lamp usually.

The working process of the present utility model is as follows:

The slag generated by the combustion in the power plant boiler falls on the cold ash hopper, and the cold ash hopper absorbs the heat released by the slag, and the temperature of the wall surface continues to rise. The temperature finally reaches a stable value. The heat collecting plate is closely connected with the cold ash hopper, continuously absorbs heat and increases in temperature, and finally reaches thermal equilibrium with the cold ash hopper. The heat insulation body installed around the outside of the heat collecting plate can prevent the heat collecting plate from directly transmitting heat to the surroundings. The hot end of the thermoelectric generator is connected to the outer side of the heat collecting plate, and the cold end of the thermoelectric generator is connected to the cooling plate, forming a temperature difference at both ends of the thermoelectric generator. The thermoelectric generator is formed by closely arranging multiple thermoelectric modules, which can prevent heat from being transferred to the cold source through the gap. The cooling plate is in direct contact with the air in the surrounding environment, and its function is to keep the cold end of the thermoelectric generator at a lower temperature. Under the action of the temperature difference between the heat collecting plate and the heat sink plate, the thermoelectric generator generates an open circuit voltage. The thermoelectric generator forms a loop with an inverter, a voltage regulator, and a lighting lamp to generate electricity.

Although the preferred embodiment of the utility model has been described above in conjunction with the accompanying drawings, the utility model is not limited to the above-mentioned specific implementation, and the above-mentioned specific implementation is only illustrative and not restrictive. Under the enlightenment of the utility model, those skilled in the art can also make many forms without departing from the purpose of the utility model and the protection scope of the claims, and these all belong to the protection scope of the utility model.

Claims (7)

1. one kind utilizes the temperature difference electricity generation device of boiler slag removal used heat, it is characterized in that, comprise the collecting plate be fixed on the water-cooling wall of bottom ash hopper, thermoelectric generator is provided with in the outside of described collecting plate, heating panel is provided with in the outside of described thermoelectric generator, hot junction and the described collecting plate of described thermoelectric generator are affixed, and cold junction and the described heating panel of described thermoelectric generator are affixed.

2. the temperature difference electricity generation device utilizing boiler slag removal used heat according to claim 1, is characterized in that, the facade of described collecting plate is trapezoidal, described trapezoidal go to the bottom adjacent with the water-cooling wall of described bottom ash hopper.

3. the temperature difference electricity generation device utilizing boiler slag removal used heat according to claim 1, is characterized in that, described collecting plate is provided with the flange extended to bottom ash hopper, and described collecting plate spiral-lock is on the water-cooling wall of described bottom ash hopper.

4. the temperature difference electricity generation device utilizing boiler slag removal used heat according to claim 1, is characterized in that, is provided with thermal insulator in the outside surrounding of described collecting plate.

5. the temperature difference electricity generation device utilizing boiler slag removal used heat according to claim 1, is characterized in that, the outside of described heating panel is provided with fin.

6. the temperature difference electricity generation device utilizing boiler slag removal used heat according to claim 1, is characterized in that, described thermoelectric generator is formed by multiple thermoelectric module array together.

7. application utilizes an illuminator for the temperature difference electricity generation device of boiler slag removal used heat as claimed in claim 1, it is characterized in that, comprises the described temperature difference electricity generation device, inverter, voltage adjuster and the illuminating lamp that connect successively.