High-temperature waste heat recovery equipment
By designing the flow channel structure of water pipes and gas pipes in high-temperature waste heat recovery equipment, increasing the heat exchange area, the problem of low heat exchange efficiency of existing equipment is solved, efficient waste heat recovery is achieved, and the equipment footprint is reduced.
Patent Information
- Application Number
- CN202420027100.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-05
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-01-05
AI Technical Summary
The existing high-temperature flue gas waste heat recovery equipment has insufficient effective area of heat exchange, resulting in low heat transfer efficiency and increasing the heat exchange area requires more space.
Design a high-temperature waste heat recovery equipment. By setting water pipes and gas pipes inside and outside the water flow channel, a flow channel is formed between the outer wall of the air pipe and the inner wall of the water pipe, increasing the heat exchange area, and using U-shaped pipes and arc-shaped connecting pipes to increase the heat exchange area , and optimize the flow path of exhaust gas and water through the lead pipe and the lead pipe.
It effectively improves the heat transfer contact area and waste heat recovery efficiency, and reduces the equipment's land space requirement.
Smart Images
Figure CN222317042U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of waste heat recovery, and in particular relates to high-temperature waste heat recovery equipment. Background Art
[0002] Waste heat resources are considered to be the fifth largest conventional energy source after coal, oil, natural gas and hydropower. Waste heat resources can be used for power generation, driving machinery, heating or cooling, etc., thereby reducing the consumption of primary energy and alleviating thermal pollution to the environment. my country's industrial enterprises have great potential for waste heat utilization, and waste heat utilization occupies an important position in current energy conservation. Among them, waste heat from high-temperature flue gas accounts for about 50% of the total waste heat resources.
[0003] When recovering the waste heat of high-temperature flue gas, the high-temperature flue gas is usually passed through a curved pipe filled with cooling water to exchange heat between the high-temperature flue gas and the water. In this waste heat recovery method, the contact area between the two determines the efficiency of waste heat recovery. The effective heat exchange area of commonly used equipment is only the outer wall of the curved pipe. If the heat exchange area is to be increased, the length of the pipe can be increased or the pipe can be thickened, which will increase the space occupied by the equipment. Utility Model Content
[0004] The purpose of the utility model is to provide a high-temperature waste heat recovery device, which can heat water from inside and outside the water flow channel, increase the contact area of heat transfer, and solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-temperature waste heat recovery device, comprising a shell and a heat recovery component, the heat recovery component is fixedly installed inside the shell, the heat recovery component comprises a water pipe and an air pipe, the air pipe is arranged inside the water pipe, and a water flow channel for circulating heat-absorbing liquid is provided between the outer wall of the air pipe and the inner wall of the water pipe, the two ends of the air pipe are respectively arranged corresponding to the two ends of the shell, and the two ends of the water pipe are connected to the outside of the shell.
[0006] Furthermore, the shell comprises a square cylinder, the heat recovery component is arranged inside the square cylinder, both ends of the square cylinder are fixedly connected with a cone bucket, and one end of the cone bucket is fixedly connected with a cylinder.
[0007] Furthermore, the water pipe comprises a U-shaped pipe, the U-shaped pipe has several layers, the several layers of U-shaped pipe are evenly distributed along the height direction of the square tube, and the upper and lower adjacent layers of U-shaped pipe are fixedly connected by an arc-shaped connecting pipe.
[0008] Furthermore, a positioning piece is symmetrically fixedly connected to the outer wall of the air pipe, and one side of the positioning piece is fixedly connected to the inner wall of the water pipe.
[0009] Furthermore, both ends of the air pipe are fixedly connected with a first outlet pipe, one end of the uppermost U-shaped tube and one end of the lowermost U-shaped tube are fixedly connected with a second outlet pipe, the two second outlet pipes both penetrate the side wall of the square tube, and the two first outlet pipes respectively penetrate the two second outlet pipes.
[0010] Furthermore, one end of one of the first outlet pipes is fixedly connected to an air inlet end, the side wall of the air inlet end is fixedly connected to connecting plates equidistantly distributed around the axis of the air inlet end, and one end of the connecting plate is fixedly connected to the inner wall of one of the cylinders.
[0011] Furthermore, a support plate is symmetrically fixedly connected inside the square tube, and the U-shaped tube is fixedly connected to the support plate.
[0012] Compared with the prior art, the beneficial effect of the utility model is that after the exhaust gas is connected to the cylinder at the bottom, part of the exhaust gas enters the interior of the square cylinder, and part of the exhaust gas enters the interior of the air pipe, heating the water from inside and outside the water flow channel, increasing the contact area of heat transfer, thereby improving the heat transfer efficiency and the efficiency of waste heat recovery. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0014] Figure 2 It is a front cross-sectional view of the utility model;
[0015] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure of local A;
[0016] Figure 4 It is a three-dimensional structural schematic diagram of the heat recovery component of the utility model.
[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0018] 1. Shell; 11. Square tube; 12. Cone bucket; 13. Cylinder; 2. Heat recovery component; 21. Water pipe; 22. Air pipe; 23. Water flow channel; 24. Positioning piece; 25. U-shaped tube; 26. Arc connecting tube; 27. First outlet tube; 28. Air inlet end; 29. Second outlet tube; 3. Connecting plate; 4. Support plate. DETAILED DESCRIPTION
[0019] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.
[0020] like Figure 1-3 As shown, a high-temperature waste heat recovery device includes a shell 1 and a heat recovery component 2, the heat recovery component 2 is fixedly installed inside the shell 1, the heat recovery component 2 includes a water pipe 21 and an air pipe 22, the air pipe 22 is arranged inside the water pipe 21, and a water flow channel 23 for circulating heat-absorbing liquid is provided between the outer wall of the air pipe 22 and the inner wall of the water pipe 21, the two ends of the air pipe 22 are respectively arranged corresponding to the two ends of the shell 1, and the two ends of the water pipe 21 are connected to the outside of the shell 1, the shell 1 includes a square cylinder 11, the heat recovery component 2 is arranged inside the square cylinder 11, the two ends of the square cylinder 11 are fixedly connected with a cone bucket 12, and one end of the cone bucket 12 is fixedly connected with a cylinder 13.
[0021] According to the above structure, when in use, the exhaust gas generated by the combustion furnace is connected to the cylinder 13 at the bottom, the exhaust gas with residual heat is passed into the interior of the square cylinder 11, and the water used to absorb the hot gas is passed into the interior of the water flow channel 23. The residual heat in the exhaust gas is transferred to the water, thereby playing a role in recovering the residual heat. When the exhaust gas is connected to the cylinder 13 at the bottom, part of the exhaust gas enters the interior of the square cylinder 11, and part of the exhaust gas enters the interior of the air pipe 22, and the water is heated from inside and outside the water flow channel 23, thereby increasing the contact area of heat transfer, thereby improving the heat transfer efficiency and the efficiency of waste heat recovery.
[0022] like Figure 4 As shown, the water pipe 21 includes a U-shaped tube 25, and the U-shaped tube 25 has several layers. The several layers of U-shaped tubes 25 are evenly distributed along the height direction of the square tube 11, and the upper and lower adjacent layers of U-shaped tubes 25 are fixedly connected by an arc-shaped connecting tube 26.
[0023] According to the above structure, the arrangement of a plurality of U-shaped tubes 25 can increase the effective area of exhaust gas heat exchange, thereby improving the heat exchange efficiency.
[0024] like Figure 3 As shown, a positioning piece 24 is symmetrically fixedly connected to the outer wall of the air pipe 22 , and one side of the positioning piece 24 is fixedly connected to the inner wall of the water pipe 21 .
[0025] According to the above structure, the positioning piece 24 plays a role in fixing the position of the air pipe 22 to prevent the air pipe 22 from moving inside the water flow channel 23 .
[0026] like Figure 3 and 4As shown, both ends of the air pipe 22 are fixedly connected with the first outlet pipe 27, one end of the uppermost U-shaped tube 25 and one end of the lowermost U-shaped tube 25 are fixedly connected with the second outlet pipe 29, the two second outlet pipes 29 both penetrate the side wall of the square cylinder 11, the two first outlet pipes 27 penetrate the two second outlet pipes 29 respectively, one end of one of the first outlet pipes 27 is fixedly connected with the air inlet end 28, the side wall of the air inlet end 28 is fixedly connected with the connecting plates 3 equidistantly distributed around the axis of the air inlet end 28, and one end of the connecting plate 3 is fixedly connected to the inner wall of one of the cylinders 13.
[0027] According to the above structure, during use, a part of the exhaust gas enters the air pipe 22 through the air inlet end 28, and transfers heat to the water in the water flow channel 23 from the inner side of the water flow channel 23; the other part enters the square tube 11, and transfers heat to the water in the water flow channel 23 from the outside of the water flow channel 23, thereby improving the heat transfer efficiency. When injecting cooling water, it is injected through the second outlet pipe 29 at the top, and the water is discharged through the second outlet pipe 29 at the bottom after absorbing the heat.
[0028] like Figure 2 and 4 As shown, in order to improve the stability of the heat recovery assembly 2 inside the housing 1 , a support plate 4 is symmetrically fixedly connected inside the square cylinder 11 , and the U-shaped tube 25 is fixedly connected to the support plate 4 .
[0029] The working principle of the utility model is as follows: when in use, a part of the exhaust gas enters the air pipe 22 through the air inlet end 28, and transfers heat to the water in the water flow channel 23 from the inner side of the water flow channel 23; the other part enters the square tube 11, and transfers heat to the water in the water flow channel 23 from the outside of the water flow channel 23, thereby improving the heat transfer efficiency; when injecting cooling water, it is injected through the second outlet pipe 29 at the top, and the water is discharged through the second outlet pipe 29 at the bottom after absorbing the heat; the exhaust gas in the air pipe 22 is discharged to the inside of the square tube 11 through the first outlet pipe 27 at the top, and is discharged through the top cylinder 13 together with the exhaust gas in the square tube 11.
[0030] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.
Claims
1. A high-temperature waste heat recovery device, comprising a housing (1) and a heat recovery component (2), characterized in that: The heat recovery component (2) is fixedly mounted inside the outer shell (1), and comprises a water pipe (21) and an air pipe (22). The air pipe (22) is arranged inside the water pipe (21), and a water flow channel (23) for circulating heat-absorbing liquid is formed between the outer wall of the air pipe (22) and the inner wall of the water pipe (21). The two ends of the air pipe (22) are respectively arranged corresponding to the two ends of the outer shell (1), and the two ends of the water pipe (21) are both connected to the outside of the outer shell (1).
2. A high temperature waste heat recovery device according to claim 1, characterized in that: The housing (1) comprises a square cylinder (11), the heat recovery assembly (2) is arranged inside the square cylinder (11), both ends of the square cylinder (11) are fixedly connected to a cone bucket (12), and one end of the cone bucket (12) is fixedly connected to a cylinder (13).
3. A high temperature waste heat recovery device according to claim 2, characterized in that: The water pipe (21) comprises a U-shaped pipe (25), the U-shaped pipe (25) has a plurality of layers, the plurality of layers of the U-shaped pipe (25) are evenly distributed along the height direction of the square tube (11), and two upper and lower adjacent layers of the U-shaped pipe (25) are fixedly connected via an arc-shaped connecting pipe (26).
4. A high temperature waste heat recovery device according to claim 3, characterized in that: A positioning piece (24) is symmetrically and fixedly connected to the outer wall of the air pipe (22), and one side of the positioning piece (24) is fixedly connected to the inner wall of the water pipe (21).
5. A high temperature waste heat recovery device according to claim 4, characterized in that: Both ends of the air pipe (22) are fixedly connected to a first outlet pipe (27), one end of the uppermost U-shaped pipe (25) and one end of the lowermost U-shaped pipe (25) are fixedly connected to a second outlet pipe (29), the two second outlet pipes (29) both penetrate the side wall of the square tube (11), and the two first outlet pipes (27) respectively penetrate the two second outlet pipes (29).
6. A high-temperature waste heat recovery device according to claim 5, characterized in that: One end of one of the first outlet pipes (27) is fixedly connected to an air inlet end (28), and the side wall of the air inlet end (28) is fixedly connected to connecting plates (3) equidistantly distributed around the axis of the air inlet end (28), and one end of the connecting plate (3) is fixedly connected to the inner wall of one of the cylinders (13).
7. A high temperature waste heat recovery device according to claim 6, characterized in that: A support plate (4) is symmetrically and fixedly connected inside the square tube (11), and the U-shaped tube (25) is fixedly connected to the support plate (4).