Heat energy recycling device

Abstract

The invention relates to the technical field of heat energy recycling, and particularly discloses a heat energy recycling device which comprises a water tank. The collecting box is arranged on the bracket; the exchange device comprises an outer heat dissipation pipe arranged on the water tank in a penetrating mode, a lower sealing plate is arranged on the inner wall of the outer heat dissipation pipe, an inner heat dissipation pipe is attached to the inner side of the lower sealing plate in a sliding mode, and an upper sealing plate is attached between the inner heat dissipation pipe and the outer heat dissipation pipe in a sliding mode; according to the heat energy recycling device, when the inner heat dissipation pipe is broken, flue gas is injected into the containing cavity and ejects a first one-way valve, a flue gas switch controls a driving mechanism to drive a push plate to move downwards, the push plate drives a pressing plate to clamp the inner heat dissipation pipe and drives the inner heat dissipation pipe and an upper sealing plate to move downwards, and the upper sealing plate moves downwards to discharge waste heat conduction oil and flue gas into a collecting box; the damaged position of the radiating pipe is moved to the position below the lower sealing plate; and then the upper sealing plate is driven to move upwards to enable the interior of the containing cavity to be in negative pressure, a second one-way valve is opened to suck external new heat conduction oil into the containing cavity, in-time treatment of breakage of the inner heat dissipation pipe is achieved, and smoke is prevented from polluting water.

Description

Technical Field

[0001] The invention relates to the technical field of heat energy recovery, and in particular to a heat energy recycling device. Background Art

[0002] At present, steam engines or boilers are used as thermal power equipment in some thermal power equipment. However, during the use of this kind of thermal power equipment, a large amount of heat energy will be generated and discharged to the external environment along with the high-temperature flue gas, causing energy waste and environmental pollution. In order to recycle the energy in the flue gas, this part of the heat needs to be recycled.

[0003] The heat recovery and utilization devices in the prior art all use cold water flowing in the water pipe to absorb the heat in the flue gas for heat recovery and utilization. However, on the high-temperature heating surface of the flue gas in the water pipe, the pipe wall is prone to high-temperature corrosion in the high-temperature flue gas environment. This type of corrosion can be divided into types such as flue gas scour, gas corrosion and coal powder impact. High-temperature corrosion occurs on the high-temperature heating surface of the water pipe in contact with the flue gas, especially when burning high-moisture and high-sulfur fuels. This type of corrosion will cause the pipe wall to become thinner, the strength to decrease, and eventually lead to pipe rupture. When the flue gas pressure is greater than the water pressure, the flue gas will enter the water pipe from the ruptured position of the water pipe, causing water pollution. In addition, once the water pipe is ruptured, it is necessary to repair and replace the water pipe, which is cumbersome. Summary of the invention

[0004] The present invention provides a heat recycling device, aiming to solve the problem that the maintenance work is cumbersome when the water pipe of the heat recovery device in the related art is broken. When the smoke pressure is greater than the water pressure, the smoke will enter the water pipe from the broken position of the water pipe, causing water pollution.

[0005] The heat energy recycling device of the present invention comprises a bracket and also comprises: A water tank is arranged on the bracket, and water to be heated flows in the water tank; A collection box, arranged on the bracket; The exchange device comprises an outer heat dissipation pipe which is arranged on the water tank through and through, a lower sealing plate is arranged on the inner wall of the outer heat dissipation pipe, an inner heat dissipation pipe is slidably fitted on the inner side of the lower sealing plate, an upper sealing plate is slidably fitted between the inner heat dissipation pipe and the outer heat dissipation pipe, an accommodating chamber is formed between the inner heat dissipation pipe, the outer heat dissipation pipe, the upper sealing plate and the lower sealing plate, heat transfer oil is arranged in the accommodating chamber, a smoke switch is arranged on the top surface of the lower sealing plate, an oil drain hole is arranged on the lower sealing plate, two ends of the oil drain hole are respectively connected with the accommodating chamber and the collecting box, and the drain hole is connected with the collecting chamber and the collecting box. A first one-way valve is arranged in the oil hole, an oil inlet hole is arranged on the upper sealing plate, the bottom of the oil inlet hole is communicated with the accommodating chamber, the top of the oil inlet hole is communicated with an oil inlet pipe, the oil inlet pipe is connected to an external heat transfer oil source, a second one-way valve is arranged in the oil inlet hole, a transmission hole is opened on the upper sealing plate, a push plate and a pressure plate are slidably arranged in the transmission hole, a transmission fluid is arranged between the push plate and the pressure plate, and the exchange device also includes a driving mechanism electrically connected to the smoke switch, and the driving mechanism can drive the push plate to move; The smoke conveying mechanism is slidably arranged on the exchange device and is used for conveying the hot smoke to the exchange device.

[0006] Preferably, the water tank includes a box body, and a water inlet pipe and a water outlet pipe are respectively arranged on both sides of the box body. The water inlet pipe can allow external cold water to be heated to enter the water tank, and the water outlet pipe can discharge the heated water in the water tank. The box body is provided with a through hole for the exchange device to pass through.

[0007] Preferably, a rubber layer is provided on the inner side of the lower sealing plate, and the rubber layer on the lower sealing plate abuts against the outer wall of the inner heat dissipation tube, and rubber layers are provided on the inner and outer sides of the upper sealing plate, the rubber layer on the inner side of the upper sealing plate abuts against the outer surface of the inner heat dissipation tube, and the rubber layer on the outer side of the upper sealing plate abuts against the inner wall of the outer heat dissipation tube.

[0008] Preferably, the transmission hole is L-shaped.

[0009] Preferably, the pressing plate is provided with anti-skid protrusions, and the outer surface of the inner heat dissipation tube is provided with anti-skid grooves corresponding to the anti-skid protrusions on the pressing plate.

[0010] Preferably, the driving mechanism is a hydraulic cylinder.

[0011] Preferably, the smoke conveying mechanism includes a smoke conveying pipe, a plug plate is provided on the outside of the smoke conveying pipe, the plug plate is slidably fitted on the inner wall of the inner heat dissipation pipe, a rubber layer is provided on the outer surface of the plug plate, and the rubber layer on the outer surface of the plug plate abuts against the inner wall of the inner heat dissipation pipe.

[0012] Preferably, the collection box is provided with an exhaust hole.

[0013] Preferably, an oil outlet is provided at the bottom of the collecting box, and a valve is provided on the oil outlet.

[0014] Preferably, the transmission fluid between the push plate and the pressure plate is hydraulic oil.

[0015] The beneficial effects of the present invention are as follows: when in use, water flows through the water tank, smoke passes through the smoke conveying mechanism, the heat dissipation pipe and the collection box, and at the same time, the heat of the smoke is transferred to the water in the water tank through the inner heat dissipation pipe, the heat transfer oil and the outer heat dissipation pipe for heating; when the inner heat dissipation pipe is broken, its smoke fills into the heat transfer oil in the accommodating chamber, and the heat transfer oil in the accommodating chamber is pressed to open the first one-way valve, so that the heat transfer oil is discharged into the collection box along the oil discharge hole, and then the smoke switch detects the smoke and controls the drive mechanism to start, and the drive mechanism starts to first drive the push plate to move downward, and the push plate moves downward to drive the pressure plate to clamp the outer wall of the inner heat dissipation pipe through the transmission fluid, and drives the inner heat dissipation pipe to move downward. The tube and the upper sealing plate move downward synchronously, and the upper sealing plate moves downward to discharge the waste heat transfer oil and smoke in the accommodating chamber into the collection box along the oil discharge hole. At the same time, the inner heat dissipation tube moves downward to move the damaged position thereon to the bottom of the lower sealing plate; then the driving mechanism drives the push plate to move upward, and the push plate moves upward to drive the pressure plate to move through the transmission fluid and no longer clamp the inner heat dissipation tube, and drives the upper sealing plate to move upward. The upper sealing plate moves upward to make the accommodating chamber negative pressure, the first one-way valve is closed, and the second one-way valve is opened, and the new external heat transfer oil is sucked into the accommodating chamber along the oil inlet pipe to continue working, thereby realizing timely maintenance and treatment when the inner heat dissipation tube is broken, and preventing the pollution of water by smoke. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention.

[0017] Figure 2 It is a three-dimensional cross-sectional view of a specific embodiment of the present invention.

[0018] Figure 3 It is a structural schematic diagram of a water tank, a collecting box, an exchange device and a smoke conveying mechanism in a specific embodiment of the present invention.

[0019] Figure 4 It is a structural schematic diagram of a water tank in a specific embodiment of the present invention.

[0020] Figure 5 It is a schematic structural diagram of a collection box in a specific embodiment of the present invention.

[0021] Figure 6 It is a schematic diagram of the structure of a switching device in a specific embodiment of the present invention.

[0022] Figure 7 It is a three-dimensional cross-sectional view of an exchange device according to a specific embodiment of the present invention.

[0023] Figure 8It is a structural schematic diagram of a transmission mechanism of a specific embodiment of the present invention.

[0024] Reference numerals: 10. Bracket; 20. Water tank; 21. Box body; 211. Through hole; 22. Water inlet pipe; 23. Water outlet pipe; 30. Collecting box; 31. Exhaust hole; 32. Oil outlet; 40. Exchange device; 41. External heat dissipation pipe; 42. Lower sealing plate; 421. Oil drain hole; 422. First one-way valve; 43. Internal heat dissipation pipe; 44. Upper sealing plate; 441. Oil inlet hole; 442. Second one-way valve; 443. Transmission hole; 45. Accommodating chamber; 46. Smoke switch; 47. Oil inlet pipe; 48. Transmission mechanism; 481. Push plate; 482. Press plate; 49. Driving mechanism; 50. Smoke conveying mechanism; 51. Smoke conveying pipe; 52. Stopper plate. DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0026] like Figures 1 to 8 As shown, the heat energy recycling device of the present invention includes a bracket 10, to which a water tank 20 and a collecting box 30 are fixedly connected, water to be heated flows in the water tank 20, an exchange device 40 is arranged on the water tank 20, and a smoke conveying mechanism 50 is arranged on the exchange device 40. The smoke conveying mechanism 50 can convey the hot smoke to the exchange device 40, and the smoke can be injected into the collecting box 30 after passing through the exchange device 40, and the heat of the smoke can be transferred to the water in the water tank 20 through the exchange device 40.

[0027] refer to Figures 1 to 4 As shown, the water tank 20 includes a box body 21, and a water inlet pipe 22 and a water outlet pipe 23 are respectively arranged on both sides of the box body 21. The water inlet pipe 22 can supply cold water to be heated from the outside to enter the water tank 20, and the water outlet pipe 23 can discharge the heated water in the water tank 20. A through hole 211 for the exchange device 40 to pass through is opened on the box body 21. The through hole 211 is adapted to the exchange device 40, and can enable the exchange device 40 to pass through the water tank 20, so that the heat of the flue gas flowing through the exchange device 40 can be transferred to the water in the water tank 20.

[0028] refer to Figures 1 to 3 and Figures 6 to 8As shown, the exchange device 40 includes an outer heat dissipation tube 41 fixedly arranged on the inner wall of the through hole 211. In the present embodiment, the material of the outer heat dissipation tube 41 is aluminum. The bottom of the inner wall of the outer heat dissipation tube 41 is fixedly connected with a lower sealing plate 42. The inner side of the lower sealing plate 42 is slidably fitted with an inner heat dissipation tube 43. The material of the inner heat dissipation tube 43 is aluminum. It should be noted that a rubber layer is provided on the inner side of the lower sealing plate 42, and the rubber layer abuts against the inner heat dissipation tube 43. In this way, the sealing between the lower sealing plate 42 and the inner heat dissipation tube 43 can be achieved. An upper sealing plate 44 is slidably fitted between the top of the outer wall of the inner heat dissipation tube 43 and the top of the inner wall of the outer heat dissipation tube 41. It should be noted that rubber layers are provided on the inner and outer sides of the upper sealing plate 44. The rubber layer on the inner side of the upper sealing plate 44 abuts against the outer surface of the inner heat dissipation tube 43, and the rubber layer on the outer side of the upper sealing plate 44 abuts against the inner surface of the outer heat dissipation tube 41. An accommodating chamber 45 is formed between the outer wall of the heat pipe 43, the inner wall of the external heat dissipation pipe 41, the bottom surface of the upper sealing plate 44 and the top surface of the lower sealing plate 42, in which heat transfer oil is arranged, and a smoke switch 46 is arranged on the top surface of the lower sealing plate 42. The smoke switch 46 can monitor the quality of the heat transfer oil. Once the quality of the heat transfer oil deteriorates, the smoke switch 46 will be triggered. An oil drain hole 421 is arranged on the lower sealing plate 42, the top of the oil drain hole 421 is connected to the accommodating chamber 45, the bottom of the oil drain hole 421 is connected to the collecting box 30, a first one-way valve 422 is arranged in the oil drain hole 421, an oil inlet hole 441 is arranged on the upper sealing plate 44, the bottom of the oil inlet hole 441 is connected to the accommodating chamber 45, the top of the oil inlet hole 441 is fixedly connected with an oil inlet pipe 47, the oil inlet pipe 47 is connected to an external heat transfer oil source, and a second one-way valve 442 is arranged in the oil inlet hole 441.

[0029] Continue to refer Figures 6 to 8As shown, a transmission hole 443 is provided on the upper sealing plate 44, and the transmission hole 443 is L-shaped. A transmission mechanism 48 is slidably arranged in the transmission hole 443. The transmission mechanism 48 includes a push plate 481 and a pressure plate 482 slidably arranged in the transmission hole 443. A transmission fluid is arranged between the push plate 481 and the pressure plate 482. In this embodiment, the transmission fluid is hydraulic oil. An anti-skid protrusion is arranged on the pressure plate 482, and an anti-skid groove corresponding to the anti-skid protrusion on the pressure plate 482 is arranged on the outer surface of the inner heat dissipation tube 43; the downward movement of the push plate 481 can drive the pressure plate 482 to approach the outer wall of the inner heat dissipation tube 43 through the transmission fluid, and make the anti-skid protrusion on the pressure plate 482 press against the anti-skid groove on the inner heat dissipation tube 43, so as to increase the friction between the pressure plate 482 and the inner heat dissipation tube 43 Friction, as the pressure plate 482 continues to move downward, it will synchronously drive the upper sealing plate 44 and the inner heat dissipation tube 43 to move downward synchronously, so that the damaged position on the inner heat dissipation tube 43 leaves the water tank 20. At the same time, the contaminated heat transfer oil in the accommodating chamber 45 is pushed into the collecting box 30 by the first one-way valve 422; then the push plate 481 is controlled to move upward, and the upward movement of the push plate 481 can drive the pressure plate 482 away from the outer wall of the inner heat dissipation tube 43 through the transmission fluid, thereby reducing the friction between the pressure plate 482 and the inner heat dissipation tube 43. As the pressure plate 482 continues to move upward, since the friction between the pressure plate 482 and the inner heat dissipation tube 43 is not enough to support the inner heat dissipation tube 43, it will drive the upper sealing plate 44 to move upward, and the negative pressure in the accommodating chamber 45 is generated, and the new heat transfer oil enters the accommodating chamber 45 through the second one-way valve 442.

[0030] The exchange device 40 also includes a driving mechanism 49, which is a hydraulic cylinder. The driving mechanism 49 is electrically connected to the smoke switch 46. The driving mechanism 49 can drive the push plate 481 to move up and down. When the smoke switch 46 detects that the quality of the heat transfer oil is reduced, the smoke switch 46 will trigger the driving mechanism 49, so that the driving mechanism 49 drives the push plate 481 to move down first and then up once.

[0031] refer to Figures 1 to 3 and Figure 7 As shown, the smoke conveying mechanism 50 includes a smoke conveying pipe 51, and a plug plate 52 is welded to the outside of the smoke conveying pipe 51. The plug plate 52 slides and fits on the inner wall of the inner heat dissipation pipe 43. It should be noted that a rubber layer is provided on the outer surface of the plug plate 52, and the rubber layer on the surface of the plug plate 52 abuts against the inner wall of the inner heat dissipation pipe 43, so that the plug plate 52 and the inner wall of the inner heat dissipation pipe 43 can be sealed and slid. The smoke with heat is placed in the inner heat dissipation pipe 43 through the smoke conveying pipe 51, and the heat of the smoke is transferred to the water through the inner heat dissipation pipe 43, the heat transfer oil and the outer heat dissipation pipe 41 to achieve heating of the water.

[0032] refer to Figures 1 to 3 and Figure 5As shown, the collecting box 30 is provided with an exhaust hole 31, and the flue gas and waste heat transfer oil exhausted by the exchange device 40 can enter the collecting box 30, and the flue gas is finally discharged from the exhaust hole 31 on the collecting box 30. The bottom of the collecting box 30 is provided with an oil outlet 32, and the oil outlet 32 ​​is provided with a valve. By controlling the valve to open, the waste heat transfer oil collected in the collecting box 30 can be discharged.

[0033] When in use, the cold water to be heated outside enters the water tank 20 through the water inlet pipe 22, and then is discharged from the water outlet pipe 23. At the same time, the hot smoke passes through the smoke conveying pipe 51 and is placed in the inner heat dissipation pipe 43, and then is transported to the collection box 30 by the inner heat dissipation pipe 43. The smoke is finally discharged from the exhaust hole 31 on the collection box 30. At the same time, the heat of the smoke is transferred to the water in the water tank 20 through the inner heat dissipation pipe 43, the heat transfer oil, and the outer heat dissipation pipe 41 to heat the water. When the inner heat dissipation tube 43 is broken, its smoke is poured into the heat transfer oil in the accommodating chamber 45. The heat transfer oil in the accommodating chamber 45 is pressed to open the first non-return valve 422, so that the heat transfer oil is discharged into the collection box 30 along the oil discharge hole 421. Then the smoke switch 46 detects the smoke and controls the drive mechanism 49 to start. The drive mechanism 49 starts to first drive the push plate 481 to move downward. The push plate 481 moves downward to drive the pressure plate 482 to clamp the outer wall of the inner heat dissipation tube 43 through the transmission fluid, and drives the inner heat dissipation tube 43 and the upper sealing plate 44 to move downward synchronously. The upper sealing plate 44 moves downward to discharge the waste heat transfer oil and smoke in the accommodating chamber 45 along the oil discharge hole 421 into the collection box 30. At the same time, the inner heat dissipation tube 43 moves downward to move the damaged position thereon to the bottom of the lower sealing plate 42. Then the driving mechanism 49 drives the push plate 481 to move upward, and the push plate 481 moves upward and drives the pressure plate 482 to move through the transmission fluid and no longer clamps the inner heat dissipation tube 43. The push plate 481 continues to move upward and drives the upper sealing plate 44 to move upward. The upper sealing plate 44 moves upward to create a negative pressure in the accommodating chamber 45, and the first one-way valve 422 is closed, and the second one-way valve 442 is opened, so that the new external heat transfer oil is sucked into the accommodating chamber 45 along the oil inlet pipe 47 to continue working.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A heat energy recycling device, comprising a bracket, characterized in that: Also includes: A water tank is arranged on the bracket, and water to be heated flows in the water tank; A collection box, arranged on the bracket; The exchange device comprises an outer heat dissipation pipe which is arranged on the water tank through and through, a lower sealing plate is arranged on the inner wall of the outer heat dissipation pipe, an inner heat dissipation pipe is slidably fitted on the inner side of the lower sealing plate, an upper sealing plate is slidably fitted between the inner heat dissipation pipe and the outer heat dissipation pipe, an accommodating chamber is formed between the inner heat dissipation pipe, the outer heat dissipation pipe, the upper sealing plate and the lower sealing plate, heat transfer oil is arranged in the accommodating chamber, a smoke switch is arranged on the top surface of the lower sealing plate, an oil drain hole is arranged on the lower sealing plate, two ends of the oil drain hole are respectively connected with the accommodating chamber and the collecting box, and the drain hole is connected with the collecting chamber and the collecting box. A first one-way valve is arranged in the oil hole, an oil inlet hole is arranged on the upper sealing plate, the bottom of the oil inlet hole is communicated with the accommodating chamber, the top of the oil inlet hole is communicated with an oil inlet pipe, the oil inlet pipe is connected to an external heat transfer oil source, a second one-way valve is arranged in the oil inlet hole, a transmission hole is opened on the upper sealing plate, a push plate and a pressure plate are slidably arranged in the transmission hole, a transmission fluid is arranged between the push plate and the pressure plate, and the exchange device also includes a driving mechanism electrically connected to the smoke switch, and the driving mechanism can drive the push plate to move; The smoke conveying mechanism is slidably arranged on the exchange device and is used for conveying the hot smoke to the exchange device.

2. The heat energy recycling device according to claim 1, characterized in that: The water tank includes a box body, and a water inlet pipe and a water outlet pipe are respectively arranged on both sides of the box body. The water inlet pipe can allow external cold water to be heated to enter the water tank, and the water outlet pipe can discharge the heated water in the water tank. The box body is provided with a through hole for the exchange device to pass through.

3. The heat energy recycling device according to claim 1, characterized in that: A rubber layer is provided on the inner side of the lower sealing plate, and the rubber layer on the lower sealing plate abuts against the outer wall of the inner heat dissipation tube. Rubber layers are provided on the inner and outer sides of the upper sealing plate. The rubber layer on the inner side of the upper sealing plate abuts against the outer surface of the inner heat dissipation tube, and the rubber layer on the outer side of the upper sealing plate abuts against the inner wall of the outer heat dissipation tube.

4. The heat energy recycling device according to claim 1, characterized in that: The transmission hole is L-shaped.

5. The heat energy recycling device according to claim 1, characterized in that: The pressing plate is provided with anti-skid protrusions, and the outer surface of the inner heat dissipation tube is provided with anti-skid grooves corresponding to the anti-skid protrusions on the pressing plate.

6. The heat energy recycling device according to claim 1, characterized in that: The driving mechanism is a hydraulic cylinder.

7. The heat energy recycling device according to claim 1, characterized in that: The smoke conveying mechanism includes a smoke conveying pipe, a plug plate is arranged outside the smoke conveying pipe, the plug plate is slidably fitted on the inner wall of the inner heat dissipation pipe, a rubber layer is arranged on the outer surface of the plug plate, and the rubber layer on the outer surface of the plug plate abuts against the inner wall of the inner heat dissipation pipe.

8. The heat energy recycling device according to claim 1, characterized in that: The collecting box is provided with an exhaust hole.

9. The heat energy recycling device according to claim 1, characterized in that: The bottom of the collecting box is provided with an oil outlet, and a valve is provided on the oil outlet.

10. The heat energy recycling device according to claim 1, characterized in that: The transmission fluid between the push plate and the pressure plate is hydraulic oil.

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