一种电厂余热回收利用设备

Abstract

本实用新型公开了一种电厂余热回收利用设备，涉及余热回收技术领域，包括换热筒；换热筒具有容置空腔，容置空腔内设置有总螺旋盘管和中心管；总螺旋盘管套设在中心管外侧；中心管的轴线与换热筒的轴线平行，中心管的上端延伸出容置空腔，且中心管的上端开口用于通入烟气；中心管的下端开口与总螺旋盘管的下端进气口连通；换热筒的下端设置有烟气排出管，烟气排出管与总螺旋盘管的出气口连通；换热筒上设置有与容置空腔连通的进水管和出水管。其能够提高热能利用率。

Claims

1. A power plant waste heat recovery and utilization apparatus, characterized by: Including heat exchangers; The heat exchange cylinder has a accommodating cavity, and a main spiral coil and a central tube are arranged inside the accommodating cavity; The main spiral coil is sleeved on the outside of the central tube; The axis of the central tube is parallel to the axis of the heat exchange cylinder. The upper end of the central tube extends out of the accommodating cavity, and the upper end opening of the central tube is used to introduce flue gas. The lower end opening of the central tube is connected to the lower end air inlet of the main spiral coil. The lower end of the heat exchange cylinder is provided with a flue gas discharge pipe, which is connected to the outlet of the main spiral coil. The heat exchange cylinder is equipped with an inlet pipe and an outlet pipe that communicate with the accommodating cavity.

2. The power plant waste heat recovery and utilization apparatus according to claim 1, characterized by: The accommodating cavity includes a heat exchange cavity and an annular insulation cavity; the annular insulation cavity is located outside the heat exchange cavity and is not in communication with the heat exchange cavity; The main spiral coil includes an inner spiral coil and an outer spiral coil; the inner spiral coil and the central tube are both located inside the heat exchange cavity, and the outer spiral coil is arranged inside the annular insulation cavity. The lower opening of the central tube is connected to the lower opening of the inner spiral coil, the upper opening of the inner spiral coil is connected to the upper opening of the outer spiral coil, and the lower opening of the outer spiral coil is connected to the flue gas discharge pipe.

3. The power plant waste heat recovery apparatus according to claim 1, characterized by: A filter is also fixedly installed at the upper end of the heat exchange cylinder; The filter has a flue gas inlet pipe at its inlet, and the filter outlet is connected to the upper opening of the central pipe.

4. The power plant waste heat recovery apparatus according to claim 1, characterized by: The central tube is either a straight tube or a central spiral coil.

5. The power plant waste heat recovery apparatus according to claim 3, characterized by: The filter includes a filter box, a filter disc, and a rotating mechanism; The filter disc is rotatably disposed inside the filter box, the rotating mechanism is disposed on the filter box, and the rotating output end of the rotating mechanism is used to drive the filter disc to rotate. The filter disc is provided with a filter area, and the filter area has multiple filter mesh holes; the lower opening of the flue gas inlet pipe extends into the filter box and corresponds to a part of the upper surface of the filter area; the upper opening of the central pipe extends into the filter box and corresponds to a part of the lower surface of the filter area; the lower opening of the flue gas inlet pipe corresponds to the upper opening of the central pipe.

6. The power plant waste heat recovery apparatus according to claim 5, characterized by: The filter box is also equipped with a cleaning mechanism, which can clean up the intercepted objects on the filter area.

7. The power plant waste heat recovery apparatus according to claim 6, characterized by: The cleaning mechanism includes a cleaning chamber, a blower, and a filter bag; The cleaning chamber is disposed inside the filter box; the cleaning chamber is located on one side of the rotation axis of the filter disc; part of the filter disc is located inside the cleaning chamber; and the rotating mechanism drives the filter disc to rotate one revolution, so that the entire filtration area on the filter disc can pass through the cleaning chamber. The blower's outlet can communicate with the bottom of the filter disc, and the gas from the blower's outlet can enter the cleaning chamber after passing through part of the filter area of ​​the filter disc. The filter bag is in communication with the cleaning chamber located above the filter disc.

8. The power plant waste heat recovery apparatus according to claim 7, characterized by: The filter box is provided with a connecting groove; the upper opening of the connecting groove is located below the filter plate, and the connecting groove is connected to the air outlet of the blower. The gas in the connecting groove can enter the cleaning chamber after passing through part of the filtration area of ​​the filter plate.

9. The power plant waste heat recovery apparatus according to claim 7, characterized by: The filter box is equipped with a quick-connect connector, one end of which is connected to the cleaning chamber, and the inlet of the filter bag is connected to the other end of the quick-connect connector.

10. The power plant waste heat recovery apparatus according to claim 1, characterized by: The lower end of the heat exchange cylinder is fixedly equipped with multiple support legs.

Images