一种用于沼气发电的余热回收利用装置
By using coaxial spiral exhaust vanes and guide vanes in the biogas power generation unit to optimize the flue gas flow, the problem of uneven distribution of water flow and flue gas is solved, achieving uniform distribution and efficient heat exchange, avoiding local overheating or heat exchange dead zones, and improving heat exchange efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI JIUJIN ENERGY CO LTD
- Filing Date
- 2025-08-29
- Publication Date
- 2026-07-17
AI Technical Summary
In existing biogas power generation waste heat recovery devices, the distribution of water flow and flue gas is uneven, which can easily lead to local overheating or heat exchange dead zones, resulting in low heat exchange efficiency.
The heating tank is equipped with a coaxial spiral exhaust plate to form a spiral flow space. The inlet and outlet pipes pass through the spiral exhaust plate, and the flue gas flows along the spiral path to exchange heat with the water flow in the opposite or forward direction. The distribution of flue gas is optimized by combining the guide plate.
It achieves uniform distribution of water flow and flue gas, avoids local overheating or heat exchange dead zones, improves heat exchange efficiency and area, and enhances heat transfer effect.
Smart Images
Figure CN224516820U_ABST
Abstract
Claims
1. A waste heat recovery and utilization device for biogas power generation, comprising a heating tank (10). The heating tank (10) is connected to an inlet pipe (11) and an outlet pipe (13) at both ends, and a water pump (12) is installed on the heating tank (10). The water pump (12) is installed on the inlet pipe (11) or the outlet pipe (13). characterized in that The heating tank (10) is equipped with a spiral exhaust plate (40). The spiral exhaust plate (40) is hollow inside, forming a spirally distributed smoke passage chamber (41). The heating tank (10) is also provided with a smoke inlet pipe (20) and a smoke outlet pipe (30) at both ends, and the smoke inlet pipe (20) and the smoke outlet pipe (30) pass through the heating tank (10) and are connected to the spiral exhaust plate (40).
2. The waste heat recovery device for biogas power generation according to claim 1, wherein The spiral exhaust plate (40) is coaxially arranged with the heating tank (10). The internal cavity of the heating tank (10) is cylindrical. The outer diameter of the spiral exhaust plate (40) is the same as the inner diameter of the heating tank (10), so that the outer ring of the spiral exhaust plate (40) fits with the heating tank (10), and a spiral flow space is formed inside the heating tank (10).
3. The waste heat recovery device for biogas power generation according to claim 1, wherein The water outlet pipe (13) and the smoke inlet pipe (20) are located on the same side of the heating tank (10), while the smoke outlet pipe (30) and the water inlet pipe (11) are located on the other side of the heating tank (10).
4. The waste heat recovery device for biogas power generation according to claim 1, wherein The water outlet pipe (13) is located at the top of one side of the heating tank (10), and the water inlet pipe (11) is located at the bottom of the other side of the heating tank (10).
5. The waste heat recovery device for biogas power generation according to claim 1, wherein The smoke passage chamber (41) is provided with multiple guide vanes (42). One end of the guide vane (42) is fixed inside the smoke passage chamber (41) on the side away from the axis, and the other end of the guide vane (42) has a gap with the side of the smoke passage chamber (41) close to the axis.
6. The waste heat recovery device for biogas power generation according to claim 5, wherein The width of the gap is one-quarter to one-half of the length of the guide vane (42).
7. The waste heat recovery device for biogas power generation according to claim 5, wherein The guide vane (42) is fixedly connected to both sides of the spiral exhaust vane (40) along the axis and inside the smoke passage chamber (41) along the axis. The guide vane (42) can support the spiral exhaust vane (40).
8. The waste heat recovery device for biogas power generation according to claim 5, wherein The shape of the guide vane (42) is straight, arc-shaped or wave-shaped.