Flue gas waste heat recovery device of gas turbine boiler

Abstract

The smoke waste heat recovery device of the gas turbine boiler comprises a waste heat recovery box, the left side face of the waste heat recovery box is fixedly communicated with a smoke injection pipe, the right end of the smoke injection pipe penetrates through the waste heat recovery box and extends into the waste heat recovery box, and the right end of the smoke injection pipe is fixedly communicated with a smoke pipe row. Through the cooperation of the smoke pipe row and the rotary smoke pipe arranged in the device, high-temperature smoke can be sucked into the waste heat recovery box and conduct heat transfer with water in the box, and in the transfer process, the connecting rod is driven to rotate through the arranged driving motor, so that under the cooperation of the multiple stirring rods and the stirring plates, the waste heat in the waste heat recovery box can be recycled. According to the device, water in the box body can be stirred, so that the water is in more uniform contact with the pipeline, and the problem that heating is not uniform enough due to the fact that the heat of the water in the area close to the pipeline is high and the temperature of the area away from the pipeline is low in the heat transfer process of an existing device is effectively solved through the device.

Description

Technical Field

[0001] The present application relates to the field of flue gas waste heat recovery, and in particular to a flue gas waste heat recovery device for a gas turbine boiler. Background Art

[0002] In the past, most power plants used thermal power generation to generate electricity, and the fuel for thermal power generation generally includes coal or natural gas. Coal will produce more pollutants during the combustion process. In order to reduce environmental pollution, natural gas, a cleaner energy source, can be used to generate electricity.

[0003] A Chinese patent with publication number CN220506754U discloses a flue gas waste heat recovery device for a gas turbine boiler, the structure of which includes a waste heat recovery box, on which a controller, a first solenoid valve, a smoke inlet pipe, a smoke outlet pipe, a temperature sensor, a liquid level sensor and a second solenoid valve are arranged, the controller is fixedly connected to the middle of the outside of the waste heat recovery box, the first solenoid valve is sealed and connected to the top of the waste heat recovery box, and one end of the smoke inlet pipe is fixedly connected to one side of the outside of the waste heat recovery box, but the existing device still has some shortcomings. In the process of heat conduction to water, the existing device usually contacts water with the smoke exhaust pipe to transfer heat, but in the process of heat transfer, the heat of water is higher in the area close to the pipe, while the temperature of the area far away from the pipe is lower, resulting in uneven heating. For this reason, we propose a flue gas waste heat recovery device for a gas turbine boiler to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a flue gas waste heat recovery device for a gas turbine boiler to solve the problems raised in the above background technology.

[0005] The present application embodiment adopts the following technical solutions:

[0006] A flue gas waste heat recovery device for a gas turbine boiler comprises a waste heat recovery box, a left side of the waste heat recovery box is fixedly connected to a smoke injection pipe, a right end of the smoke injection pipe penetrates the waste heat recovery box and extends to the interior of the waste heat recovery box, a right end of the smoke injection pipe is fixedly connected to a smoke pipe row, an end of the smoke pipe row away from the smoke injection pipe is fixedly connected to a rotating smoke pipe, the top of the rotating smoke pipe is fixedly connected to a smoke exhaust pipe, the left end of the smoke exhaust pipe penetrates the waste heat recovery box and extends to the outside of the waste heat recovery box, a bearing is fixedly inlaid on the upper surface of the waste heat recovery box, the inner ring of the bearing is fixedly connected to a connecting rod, the top of the connecting rod is fixedly connected to a driving motor, a plurality of stirring rods are fixedly connected to the outer surface of the connecting rod, and a plurality of stirring plates are fixedly connected to the bottom end of the connecting rod.

[0007] Preferably, the upper surface of the waste heat recovery box is fixedly connected to a water injection frame, and a sealing cover is placed above the water injection frame.

[0008] Preferably, the bottom surface of the waste heat recovery box is fixedly connected to a drain valve, and the bottom end of the drain valve is fixedly connected to an extension pipe.

[0009] Preferably, a control panel is fixedly connected to the front of the waste heat recovery box, and the right end of the smoke injection pipe and the left end of the smoke exhaust pipe are both fixedly connected to control valves.

[0010] Preferably, a protective frame is fixedly connected to the upper surface of the waste heat recovery box, and a heat dissipation window is provided on the front side of the protective frame.

[0011] Preferably, a plurality of supporting legs are fixedly connected to the bottom surface of the waste heat recovery box, and a non-slip pad is fixedly connected to the bottom surface of each supporting leg.

[0012] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects:

[0013] The utility model discloses a flue gas waste heat recovery device for a gas turbine boiler. Through the cooperation of a smoke pipe row and a rotating smoke pipe provided in the device, the high-temperature flue gas can be drawn into a waste heat recovery box and heat is transferred to the water in the box. During the transfer, a connecting rod is driven to rotate by a driving motor provided, so that the water in the box can be stirred with the cooperation of a plurality of stirring rods and stirring plates to make the water in contact with the pipe more uniform. Therefore, the device effectively solves the problem that in the existing device, during the heat transfer process, the water has a higher heat in the area close to the pipe, while the temperature is lower in the area far from the pipe, thus resulting in uneven heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0015] Figure 1 The utility model is a schematic diagram of the three-dimensional structure of a flue gas waste heat recovery device for a gas turbine boiler;

[0016] Figure 2 The utility model is a schematic diagram of the front cross-section structure of a flue gas waste heat recovery device for a gas turbine boiler;

[0017] Figure 3 The utility model is a schematic diagram of the front cross-section structure of a connecting rod in a flue gas waste heat recovery device of a gas turbine boiler;

[0018] Figure 4 The utility model is a schematic top-sectional structure diagram of a flue gas waste heat recovery device for a gas turbine boiler.

[0019] In the figure: 1. Waste heat recovery box; 2. Heat dissipation window; 3. Protection frame; 4. Smoke exhaust pipe; 5. Smoke injection pipe; 6. Control valve; 7. Support leg; 8. Control panel; 9. Anti-skid pad; 10. Rotating smoke pipe; 11. Smoke pipe row; 12. Bearing; 13. Connecting rod; 14. Drain valve; 15. Stirring rod; 16. Drive motor; 17. Stirring plate; 18. Extension pipe; 19. Water injection frame; 20. Sealing cover. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0021] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0022] See also Figure 1-4 The utility model provides a technical solution for a flue gas waste heat recovery device of a gas turbine boiler:

[0023] A flue gas waste heat recovery device for a gas turbine boiler comprises a waste heat recovery box 1, a left side of the waste heat recovery box 1 is fixedly connected with a smoke injection pipe 5, the right end of the smoke injection pipe 5 penetrates the waste heat recovery box 1 and extends to the inside of the waste heat recovery box 1, the right end of the smoke injection pipe 5 is fixedly connected with a smoke pipe row 11, the end of the smoke pipe row 11 away from the smoke injection pipe 5 is fixedly connected with a rotating smoke pipe 10, the top of the rotating smoke pipe 10 is fixedly connected with a smoke exhaust pipe 4, the left end of the smoke exhaust pipe 4 penetrates the waste heat recovery box 1 and extends to the outside of the waste heat recovery box 1, the upper surface of the waste heat recovery box 1 is fixedly inlaid with a bearing 12, and the inner ring of the bearing 12 is fixedly connected with a connecting rod 13 The top of the connecting rod 13 is fixedly connected with a driving motor 16, the outer surface of the connecting rod 13 is fixedly connected with a plurality of stirring rods 15, and the bottom of the connecting rod 13 is fixedly connected with a plurality of stirring plates 17; specifically, through the cooperation of the smoke pipe row 11 and the rotating smoke pipe 10 provided in the device, the high-temperature smoke can be drawn into the waste heat recovery box 1 and transfer heat with the water in the box. During the transfer process, the connecting rod 13 is driven to rotate by the driving motor 16, so that the water in the box can be stirred with the cooperation of the plurality of stirring rods 15 and the stirring plates 17, so that the water in the box is more evenly contacted with the pipe;

[0024] In this embodiment, the upper surface of the waste heat recovery box 1 is fixedly connected to a water injection frame 19, and a sealing cover 20 is placed above the water injection frame 19; the bottom surface of the waste heat recovery box 1 is fixedly connected to a drain valve 14, and the bottom end of the drain valve 14 is fixedly connected to an extension pipe 18; specifically, through the provided water injection frame 19, water can be easily injected into the box body, and through the provided drain valve 14 and the extension pipe 18, the water in the box body can be easily discharged;

[0025] In this embodiment, a control panel 8 is fixedly connected to the front of the waste heat recovery box 1, and the right end of the smoke injection pipe 5 and the left end of the smoke exhaust pipe 4 are fixedly connected to a control valve 6; a protective frame 3 is fixedly connected to the upper surface of the waste heat recovery box 1, and a heat dissipation window 2 is provided on the front of the protective frame 3; a plurality of supporting legs 7 are fixedly connected to the bottom surface of the waste heat recovery box 1, and an anti-slip pad 9 is fixedly connected to the bottom surface of each supporting leg 7; specifically, the control panel 8 is provided to facilitate the control of the electrical components in the device, and the cooperation of the supporting legs 7 and the anti-slip pads 9 can ensure the stability of the device during operation.

[0026] Working principle: When the flue gas waste heat recovery device of a gas turbine boiler is used, the user first places the device in a suitable position, and fixes the smoke exhaust device and the smoke extraction device to the device through the smoke injection pipe 5 and the smoke exhaust pipe 4 provided in the device, so that the smoke can be injected into the waste heat recovery box 1, and then injects water into the waste heat recovery box 1 through the water injection frame 19, so that the water can be heated, and then the driving motor 16 in the device is started to drive the connecting rod 13, the stirring rod 15 and the stirring plate 17 in the device to stir the water in the waste heat recovery box 1, and finally, after the device has been running for a period of time, the water in the waste heat recovery box 1 is discharged through the drain valve 14 and the extension pipe 18.

[0027] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0028] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A flue gas waste heat recovery device for a gas turbine boiler, comprising a waste heat recovery box (1), characterized in that: The left side of the waste heat recovery box (1) is fixedly connected to a smoke injection pipe (5), the right end of the smoke injection pipe (5) penetrates the waste heat recovery box (1) and extends to the interior of the waste heat recovery box (1), the right end of the smoke injection pipe (5) is fixedly connected to a smoke pipe row (11), the end of the smoke pipe row (11) away from the smoke injection pipe (5) is fixedly connected to a rotating smoke pipe (10), the top end of the rotating smoke pipe (10) is fixedly connected to a smoke exhaust pipe (4), and the left end of the smoke exhaust pipe (4) is fixedly connected to a smoke exhaust pipe (4). The waste heat recovery box (1) penetrates the waste heat recovery box (1) and extends to the outside of the waste heat recovery box (1), the upper surface of the waste heat recovery box (1) is fixedly inlaid with a bearing (12), the inner ring of the bearing (12) is fixedly connected to a connecting rod (13), the top end of the connecting rod (13) is fixedly connected to a driving motor (16), the outer surface of the connecting rod (13) is fixedly connected to a plurality of stirring rods (15), and the bottom end of the connecting rod (13) is fixedly connected to a plurality of stirring plates (17).

2. The flue gas waste heat recovery device for a gas turbine boiler according to claim 1, characterized in that: The upper surface of the waste heat recovery box (1) is fixedly connected to a water injection frame (19), and a sealing cover (20) is placed above the water injection frame (19).

3. The flue gas waste heat recovery device for a gas turbine boiler according to claim 1, characterized in that: The bottom surface of the waste heat recovery box (1) is fixedly connected to a drain valve (14), and the bottom end of the drain valve (14) is fixedly connected to an extension pipe (18).

4. The flue gas waste heat recovery device for a gas turbine boiler according to claim 1, characterized in that: A control panel (8) is fixedly connected to the front of the waste heat recovery box (1), and a control valve (6) is fixedly connected to the right end of the smoke injection pipe (5) and the left end of the smoke exhaust pipe (4).

5. The flue gas waste heat recovery device for a gas turbine boiler according to claim 1, characterized in that: A protective frame (3) is fixedly connected to the upper surface of the waste heat recovery box (1), and a heat dissipation window (2) is provided on the front of the protective frame (3).

6. The flue gas waste heat recovery device for a gas turbine boiler according to claim 1, characterized in that: The bottom surface of the waste heat recovery box (1) is fixedly connected to a plurality of support legs (7), and the bottom surface of each support leg (7) is fixedly connected to an anti-slip pad (9).

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