Combined heat and power generation waste heat recovery device

Abstract

The utility model discloses a combined heat and power generation waste heat recovery device, which belongs to the technical field of combined heat and power generation, and comprises a recovery box, the left side of the recovery box is communicated with a connecting pipe, the connecting pipe is provided with a one-way air inlet valve, one end of the connecting pipe is provided with a flange sheet, and the top of the recovery box is fixedly connected with a water tank. A motor is fixedly installed on the left side of the water tank, a stirring rod is fixedly connected to the output end of the motor, stirring blades are fixedly connected to the surface of the stirring rod, a heat conduction plate is arranged on the top of the recycling box, a concave frame is fixedly connected to the left side of an inner cavity of the recycling box, and a bearing is fixedly connected to the inner side of the concave frame. Electric energy is converted into mechanical energy through the motor, the stirring rod is driven to rotate, the stirring blades are driven to rotate through the stirring rod, water is stirred through the stirring blades, convection can be formed in the heating process of the water through stirring, it is ensured that heat in the water is evenly distributed, and the situation of local overheating or supercooling is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of cogeneration technology, specifically relating to a cogeneration waste heat recovery device. Background Technology

[0002] Combined heat and power (CHP) is a production method that uses a heat engine or power plant to generate electricity and useful heat simultaneously. It usually adopts the principle of "heat-driven power generation" and its main goal is to provide the required heat load for the region. It also develops the best operating plan based on the heat load demand and generates electricity at the same time. The high-temperature smoke generated during CHP operation carries a large amount of heat. Waste heat recovery from this smoke can improve energy utilization efficiency.

[0003] Existing waste heat recovery devices heat water tanks using recovered heat to achieve resource reuse. However, since the heat is transferred from the bottom of the tank to the inside, local overheating or undercooling is prone to occur during the heating process. Furthermore, the lack of insulation in the recovery tank causes the recovered heat to be lost quickly, prolonging the heating time. Therefore, we provide a combined heat and power waste heat recovery device. Utility Model Content

[0004] The purpose of this invention is to provide a combined heat and power waste heat recovery device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a combined heat and power waste heat recovery device, comprising a recovery tank, a connecting pipe connected to the left side of the recovery tank, a one-way air inlet valve provided on the connecting pipe, a flange provided at one end of the connecting pipe, a water tank fixedly connected to the top of the recovery tank, a motor fixedly installed on the left side of the water tank, a stirring rod fixedly connected to the output end of the motor, stirring blades fixedly connected to the surface of the stirring rod, and a heat-conducting plate provided on the top of the recovery tank.

[0006] The above scheme converts electrical energy into mechanical energy through a motor, which drives the stirring rod to rotate. The stirring rod then drives the stirring blades to rotate, which in turn agitates the water. This agitation creates convection currents in the water during the heating process, ensuring even heat distribution and preventing localized overheating or undercooling.

[0007] In a preferred embodiment of a cogeneration waste heat recovery device, a concave frame is fixedly connected to the left side of the inner cavity of the recovery box, a bearing is fixedly connected to the inner side of the concave frame, and a rotating rod is rotatably connected to the inner ring of the bearing. A fan blade is fixedly connected to the surface of the rotating rod.

[0008] Using the above scheme, when the gas passes through the fan blades, the impact force generated by the airflow drives the fan blades to rotate. The fan blades drive one end of the rotating rod to rotate in the inner cavity of the bearing. During the rotation of the fan blades, airflow is generated, which accelerates the flow rate of the gas transported by the connecting pipe and prevents heat loss caused by slow gas flow.

[0009] In a preferred embodiment of a cogeneration waste heat recovery device, an insulation pad is adhered to the inner wall of the recovery box, and the insulation pad is bonded to the inner wall of the recovery box by an adhesive.

[0010] By adopting the above solution, the properties of the insulation pad are used to form a physical barrier on the inner wall of the recycling bin, preventing heat from being lost to the external environment through these gaps, thus further improving the insulation performance of the recycling bin.

[0011] In a preferred embodiment of a cogeneration waste heat recovery device, a water inlet is provided on the right side of the top of the water tank, and a sealing cap is provided on the water inlet.

[0012] By adopting the above solution, the sealing cover is used to prevent heat from escaping from the water inlet, thus preventing heat loss.

[0013] In a preferred embodiment of a cogeneration waste heat recovery device, a guide plate is fixedly connected to the bottom of the inner cavity of the water tank, and a water outlet pipe is fixedly connected to the bottom of the right side of the water tank. A control valve is provided on the surface of the water outlet pipe.

[0014] By adopting the above scheme and setting the guide plate, the heated hot water can be continuously delivered to the outlet pipe, which greatly improves the efficiency of water delivery.

[0015] In a preferred embodiment of a cogeneration waste heat recovery device, four anti-slip pads are adhered to all four sides of the bottom of the recovery tank.

[0016] By adopting the above solution and adding anti-slip pads, the friction between the bottom of the recycling bin and the contact surface is increased, giving the device an anti-slip function and greatly improving the stability of the device during operation.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model converts electrical energy into mechanical energy through a motor, which drives the stirring rod to rotate. The stirring rod drives the stirring blade to rotate, and the stirring blade stirs the water. Stirring can create convection in the water during the heating process, ensuring that the heat in the water is evenly distributed and avoiding local overheating or undercooling.

[0019] 2. When gas passes through the fan blades, the impact force generated by the airflow drives the fan blades to rotate. The fan blades drive one end of the rotating rod to rotate in the inner cavity of the bearing. During the rotation of the fan blades, airflow is generated, which accelerates the flow rate of the gas transported by the connecting pipe and prevents heat loss caused by slow gas flow.

[0020] 3. This utility model utilizes the properties of the heat insulation pad to form a physical barrier on the inner wall of the recycling bin, preventing heat from being lost to the external environment through these gaps, thereby further improving the heat insulation performance of the recycling bin. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a cross-sectional view of the water tank of this utility model;

[0023] Figure 3 This is a cross-sectional view of the recycling bin of this utility model.

[0024] In the diagram: 1. Recycling bin; 2. Connecting pipe; 3. One-way air inlet valve; 4. Flange; 5. Concave frame; 6. Rotating rod; 7. Fan blade; 8. Insulation pad; 9. Heat-conducting plate; 10. Water tank; 11. Motor; 12. Stirring rod; 13. Stirring blade; 14. Water outlet pipe. Detailed Implementation

[0025] Please see Figure 1-3 A combined heat and power waste heat recovery device includes a recovery tank 1, see Figure 3 As shown, a concave frame 5 is fixedly connected to the left side of the inner cavity of the recycling box 1. A bearing is fixedly connected to the inner side of the concave frame 5, and a rotating rod 6 is rotatably connected to the inner ring of the bearing. A fan blade 7 is fixedly connected to the surface of the rotating rod 6. When gas passes through the fan blade 7, the impact force generated by the airflow drives the fan blade 7 to rotate. The fan blade 7 drives one end of the rotating rod 6 to rotate in the inner cavity of the bearing. During the rotation of the fan blade 7, airflow is generated, and the flow rate of the gas transported by the connecting pipe 2 is accelerated to prevent heat loss due to slow gas flow. A connecting pipe 2 is connected to the left side of the recycling box 1. A one-way air inlet valve 3 is provided on the connecting pipe 2. A flange 4 is provided at one end of the connecting pipe 2. A water tank 10 is fixedly connected to the top of the recycling box 1. A motor 11 is fixedly installed on the left side of the water tank 10. A stirring rod 12 is fixedly connected to the output end of the motor 11. A stirring blade 13 is fixedly connected to the surface of the stirring rod 12. A heat-conducting plate 9 is provided on the top of the recycling box 1. Figure 3As shown, an insulation pad 8 is bonded to the inner wall of the recycling box 1. The insulation pad 8 is bonded to the inner wall of the recycling box 1 with an adhesive. Utilizing the properties of the insulation pad 8, a physical barrier is formed on the inner wall of the recycling box 1 to prevent heat from being lost to the external environment through these gaps, further improving the insulation performance of the recycling box 1. The motor 11 converts electrical energy into mechanical energy and drives the stirring rod 12 to rotate. The stirring rod 12 drives the stirring blade 13 to rotate, and the stirring blade 13 stirs the water. Stirring can create convection in the water during the heating process, ensuring that the heat in the water is evenly distributed and avoiding local overheating or overcooling.

[0026] See Figure 1 As shown, a water inlet is located on the right side of the top of the water tank 10, and a sealing cap is provided on the water inlet. The sealing cap prevents heat from escaping from the water inlet, thus preventing heat loss. Figure 2 As shown, a baffle plate is fixedly connected to the bottom of the inner cavity of the water tank 10, and a water outlet pipe 14 is fixedly connected to the bottom of the right side of the water tank 10. A control valve is provided on the surface of the water outlet pipe 14. Through the baffle plate, the heated hot water can be continuously delivered to the water outlet pipe 14, greatly improving the water delivery efficiency. Figure 1 As shown, four anti-slip pads are glued to the bottom of the recycling bin 1. The anti-slip pads increase the friction between the bottom of the recycling bin 1 and the contact surface, giving the device an anti-slip function and greatly improving the stability of the device during operation.

[0027] In use, the gas is first connected to an external pipe via flange 4 and secured with a set of bolts. Then, the heated gas is transported to the inner cavity of the recovery box 1 through connecting pipe 2. A one-way inlet valve 3 on the surface of connecting pipe 2 prevents heat backflow. When the gas passes through fan blade 7, the impact force generated by the airflow drives the fan blade 7 to rotate. The fan blade 7 then drives one end of the rotating rod 6 to rotate within the bearing cavity. During rotation, the fan blade 7 generates airflow and accelerates the gas flow rate through connecting pipe 2, preventing heat loss due to slow gas flow. Using the properties of the heat insulation pad 8, a physical barrier is formed on the inner wall of the recycling box 1 to prevent heat from being lost to the external environment through these gaps, which greatly improves the heat insulation performance of the recycling box 1. Then, the heat is transferred to the water tank 10 through the heat conduction plate 9. During this process, the motor 11 is started, and the motor 11 converts electrical energy into mechanical energy and drives the stirring rod 12 to rotate. The stirring rod 12 drives the stirring blade 13 to rotate, and the stirring blade 13 stirs the water. Stirring can make the water form convection during the heating process, ensuring that the heat in the water is evenly distributed and avoiding local overheating or overcooling.

Claims

1. A combined heat and power waste heat recovery device, characterized in that: The system includes a recycling bin (1), a connecting pipe (2) connected to the left side of the recycling bin (1), a one-way air inlet valve (3) provided on the connecting pipe (2), a flange (4) provided at one end of the connecting pipe (2), a water tank (10) fixedly connected to the top of the recycling bin (1), a motor (11) fixedly installed on the left side of the water tank (10), a stirring rod (12) fixedly connected to the output end of the motor (11), a stirring blade (13) fixedly connected to the surface of the stirring rod (12), a heat-conducting plate (9) provided on the top of the recycling bin (1), a concave frame (5) fixedly connected to the left side of the inner cavity of the recycling bin (1), a bearing fixedly connected to the inner side of the concave frame (5), and a rotating rod (6) rotatably connected to the inner ring of the bearing, a fan blade (7) fixedly connected to the surface of the rotating rod (6), and a heat-insulating pad (8) bonded to the inner wall of the recycling bin (1), the heat-insulating pad (8) being bonded to the inner wall of the recycling bin (1) by an adhesive.

2. The combined heat and power waste heat recovery device according to claim 1, characterized in that: The water tank (10) has an inlet on the right side of its top, and the inlet is covered with a sealing cap.

3. The combined heat and power waste heat recovery device according to claim 1, characterized in that: A guide plate is fixedly connected to the bottom of the inner cavity of the water tank (10), and a water outlet pipe (14) is fixedly connected to the bottom of the right side of the water tank (10). A control valve is provided on the surface of the water outlet pipe (14).

4. The combined heat and power waste heat recovery device according to claim 1, characterized in that: The bottom of the recycling bin (1) is covered with four anti-slip pads.

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