Gas turbine exhaust system based on waste heat recovery

Abstract

The utility model relates to the technical field of industrial waste heat treatment, and discloses a waste heat recovery-based gas turbine exhaust system which comprises a gas turbine, the right side of the gas turbine is communicated with a hollow box, the middle part of the inner side of the hollow box is connected with a sealing plate, and the left side and the right side of the bottom of the sealing plate are connected with filter screens; rotating blocks are rotationally connected to the left side and the right side of the inner wall of the sealing plate correspondingly, a conveying belt is arranged on the outer sides of the rotating blocks, the two rotating blocks are in transmission connection through the conveying belt, and the bottom of the rotating block on the left side penetrates through the sealing plate and is connected with fan blades; and the top end of the rotating block on the right side penetrates through the sealing plate and is connected with stirring blades. According to the utility model, high-temperature gas is discharged into the hollow box, stored water is heated, so that steam generated by the stored water pushes the steam turbine to start, and when the stored water is consumed, the buoy floats along with the water surface to drive the baffle to move to control water in the water tank to flow in, so that automatic water replenishing is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial waste heat treatment, in particular to a gas turbine exhaust system based on waste heat recovery. Background Art

[0002] A gas turbine is an advanced and efficient power machine that relies on a continuous flow of gas as a working fluid to drive the impeller to operate at high speed, thereby successfully converting the heat energy released by fuel combustion into mechanical energy. Since it discharges a large amount of hot air flow during operation, a gas turbine exhaust system based on waste heat recovery is required to facilitate the recovery of waste heat.

[0003] A gas turbine exhaust system based on waste heat recovery refers to an operating mechanism that focuses on recovering the residual heat energy contained in the gas turbine exhaust. At the energy utilization level, it enables the originally lost exhaust heat energy to be effectively recovered, allowing more electricity to be produced per unit fuel.

[0004] The gas turbine exhaust system with waste heat recovery currently on the market collects waste heat through the water by discharging the hot air flow into the air pipe and heating the water flow through the air pipe. In actual use, if the water flow has been heated to boiling and the waste water is not used in time, the heat recovery effect in the hot air flow will be greatly reduced, and the waste heat cannot be recovered and utilized in time, thereby improving the practicality of the device. Utility Model Content

[0005] In order to make up for the above deficiencies, the present invention provides a gas turbine exhaust system based on waste heat recovery, aiming to improve the problem of insufficient waste heat recovery and utilization of gas turbines in the prior art.

[0006] In order to achieve the above-mentioned object, the present invention adopts the following technical solution: a gas turbine exhaust system based on waste heat recovery, comprising a gas turbine, wherein the right side of the gas turbine is connected to a hollow box, a sealing plate is connected to the inner middle part of the hollow box, the left and right sides of the bottom of the sealing plate are connected to filter screens, the left and right sides of the inner wall of the sealing plate are rotatably connected to rotating blocks, a conveyor belt is provided on the outside of the rotating block, and the two rotating blocks are connected by the conveyor belt transmission, the bottom of the left rotating block passes through the sealing plate and is connected to the fan blade, the top of the right rotating block passes through the sealing plate and is connected to the stirring blade, the top of the right end of the hollow box is connected to a hollow cover, the inner side of the hollow cover is rotatably connected to the rotating blade, the right side of the hollow cover is connected to a steam turbine, the input end of the steam turbine passes through the hollow cover and is connected to the rotating blade, the right bottom of the hollow box is connected to an air outlet, and a water inlet mechanism is provided on the inside of the hollow box, and the water inlet mechanism is used to automatically replenish water after the stored water is used up.

[0007] As a further description of the above technical solution:

[0008] The water inlet mechanism includes a water tank, which is connected to the top of the gas turbine. A reserved hole is opened on the left top of the hollow box, and the right side of the gas turbine is connected to the reserved hole. A spring telescopic rod is connected to the top of the inner wall of the hollow box, and the other end of the spring telescopic rod is connected to a baffle, and the bottom of the baffle is connected to a float.

[0009] As a further description of the above technical solution:

[0010] The left side of the top of the water tank is connected with a water injection pipe, and the top of the water injection pipe is provided with a dust cover.

[0011] As a further description of the above technical solution:

[0012] The front and rear sides of the bottom of the water tank are both connected with connecting plates, the bottom of the connecting plate is connected with a bracket, and the outer side of the bracket is connected to the gas turbine.

[0013] As a further description of the above technical solution:

[0014] The left and right sides of the bottom of the gas turbine are connected to connecting frames, the bottom of the connecting frame is connected to a bottom plate, the outer wall of the bottom plate is connected to positioning blocks, and the outer side of the positioning blocks is provided with positioning holes.

[0015] As a further description of the above technical solution:

[0016] The front side of the gas turbine is connected to a controller, and the controller is electrically connected to the gas turbine and the steam turbine respectively.

[0017] As a further description of the above technical solution:

[0018] A reserved groove is provided in the middle of the front end of the hollow box, and an observation window is connected to the inner side of the reserved groove.

[0019] As a further description of the above technical solution:

[0020] A movable door is provided at the bottom of the hollow box, and hinges are connected to the left and right sides of the outer wall of the movable door. The movable door is rotatably connected to the hollow box through the hinges.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the present invention, by starting the gas turbine, high-temperature gas is discharged into the bottom of the hollow box, and the filter at the bottom of the sealing plate filters the hot air flow. The air flow drives the fan blades to rotate, and the rotating block drives the stirring blades to rotate through the conveyor belt, stirring the water in the box, increasing the contact area between the water and the sealing plate, and evenly heating the water. The evaporated steam flows into the hollow cover, pushing the rotating blades to drive the steam turbine to rotate, and the waste heat can be recovered to drive additional equipment to work, thereby improving the practicality of the device.

[0023] 2. In the utility model, the float floats with the water surface as the water stored in the hollow box is consumed. When the water is full, the float drives the baffle to move up and compresses the spring telescopic rod. The baffle blocks the reserved hole to prevent the water in the water tank from flowing in. When the water storage is insufficient, the spring telescopic rod releases potential energy to drive the baffle to move, the baffle exposes the reserved hole, and the water in the water tank flows into the hollow box. Water can be automatically replenished when the water storage is insufficient, thereby improving the convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of a gas turbine exhaust system based on waste heat recovery proposed in the present invention;

[0025] Figure 2 This is a positive attempt at a gas turbine exhaust system based on waste heat recovery proposed in the utility model;

[0026] Figure 3 This is an exploded diagram of the local structure of the gas turbine exhaust system based on waste heat recovery proposed in the utility model;

[0027] Figure 4 This is a schematic diagram of the water inlet mechanism of the gas turbine exhaust system based on waste heat recovery proposed in the present utility model;

[0028] Figure 5 This is a top view of the gas turbine exhaust system based on waste heat recovery proposed in the present invention.

[0029] Legend:

[0030] 1. Gas turbine; 2. Water inlet mechanism; 201. Water tank; 202. Spring telescopic rod; 203. Baffle; 204. Float; 205. Reserved hole; 3. Hollow box; 4. Sealing plate; 5. Filter; 6. Rotating block; 7. Conveyor belt; 8. Fan blade; 9. Stirring blade; 10. Hollow cover; 11. Rotating blade; 12. Steam turbine; 13. Reserved slot; 14. Observation window; 15. Movable door; 16. Hinge; 17. Air outlet; 18. Connecting plate; 19. Bracket; 20. Water injection pipe; 21. Dust cover; 22. Controller; 23. Connecting frame; 24. Bottom plate; 25. Positioning block; 26. Positioning hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figure 1 、 Figure 2 and Figure 3 The utility model provides an embodiment: a gas turbine exhaust system based on waste heat recovery, comprising a gas turbine 1, a hollow box 3 is connected to the right side of the gas turbine 1, a sealing plate 4 is connected to the middle of the inner side of the hollow box 3, a filter screen 5 is connected to the left and right sides of the bottom of the sealing plate 4, a rotating block 6 is rotatably connected to the left and right sides of the inner wall of the sealing plate 4, a conveyor belt 7 is provided on the outside of the rotating block 6, and the two rotating blocks 6 are connected by the conveyor belt 7. The bottom of the left rotating block 6 passes through the sealing plate 4 and is connected There are fan blades 8, the top of the right rotating block 6 passes through the sealing plate 4 and is connected to the stirring blade 9, the top of the right end of the hollow box 3 is connected to the hollow cover 10, the inner side of the hollow cover 10 is rotatably connected to the rotating blade 11, the right side of the hollow cover 10 is connected to the steam turbine 12, the input end of the steam turbine 12 passes through the hollow cover 10 and is connected to the rotating blade 11, the right bottom of the hollow box 3 is connected to the air outlet 17, and the inside of the hollow box 3 is provided with a water inlet mechanism 2, which is used to automatically replenish water after the stored water is used up.

[0033] Specifically, when the gas turbine 1 is started, the high-temperature gas it discharges will be discharged into the bottom inner side of the hollow box 3. At this time, the filter 5 at the bottom of the sealing plate 4 can filter the hot air flow. At the same time, as the air flow flows, it will drive the fan blades 8 to rotate at the same time, so that the two rotating blocks 6 can be driven to rotate at the same time through the transmission of the conveyor belt 7, thereby driving the stirring blades 9 to rotate, and stirring the water stored in the hollow box 3 to increase the contact area between the water and the sealing plate 4 so that it can be evenly heated. The evaporated steam will flow into the hollow cover 10 and push the rotating blades 11 to rotate, thereby driving the steam turbine 12 to rotate.

[0034] Reference Figure 1 、 Figure 2 and Figure 4 The water inlet mechanism 2 includes a water tank 201, which is connected to the top of the gas turbine 1. A reserved hole 205 is opened on the left top of the hollow box 3, and the right side of the gas turbine 1 is connected to the reserved hole 205. A spring telescopic rod 202 is connected to the top of the inner wall of the hollow box 3, and the other end of the spring telescopic rod 202 is connected to a baffle 203. The bottom of the baffle 203 is connected to a float 204.

[0035] Specifically, when the water in the hollow box 3 is consumed, the float 204 will float up and down with the water surface. When the water is full, the float 204 can drive the baffle 203 to move up and down and compress the spring telescopic rod 202. When the water storage is insufficient, the spring telescopic rod 202 can drive the baffle 203 to move by releasing elastic potential energy. When the water is full, the baffle 203 will block the reserved hole 205, preventing the water in the water tank 201 from flowing into the hollow box 3. When the water storage is insufficient, the baffle 203 will expose the reserved hole 205, allowing the water in the water tank 201 to flow into the hollow box 3.

[0036] Reference Figure 1 、 Figure 3 and Figure 5 The left side of the top of the water tank 201 is connected to a water injection pipe 20, and a dust cover 21 is provided on the top of the water injection pipe 20; the front and rear sides of the bottom of the water tank 201 are connected to connecting plates 18, the bottom of the connecting plate 18 is connected to a bracket 19, and the outer side of the bracket 19 is connected to the gas turbine 1; the left and right sides of the bottom of the gas turbine 1 are connected to connecting frames 23, the bottom of the connecting frame 23 is connected to a bottom plate 24, and the outer wall of the bottom plate 24 is connected to positioning blocks 25 on all sides, and the outer side of the positioning blocks 25 is provided with positioning holes 26;

[0037] Specifically, the water tank 201 can be replenished with water through the water injection pipe 20, the dust cover 21 can prevent external impurities from entering the water tank 201, the connecting frame 23 and the bracket 19 thereon can improve the firmness of the fixation between the gas turbine 1 and the water tank 201, the connecting frame 23 can enable the base plate 24 to fix the gas turbine 1, and the device can be easily installed and fixed by installing a screw member in the positioning hole 26 on the positioning block 25.

[0038] Reference Figure 2 、 Figure 3 and Figure 5 A controller 22 is connected to the front side of the gas turbine 1, and the controller 22 is electrically connected to the gas turbine 1 and the steam turbine 12 respectively; a reserved groove 13 is opened in the middle of the front end of the hollow box 3, and an observation window 14 is connected to the inner side of the reserved groove 13; a movable door 15 is provided at the bottom of the hollow box 3, and hinges 16 are connected to the left and right sides of the outer wall of the movable door 15. The movable door 15 is rotatably connected to the hollow box 3 through the hinges 16;

[0039] Specifically, the controller 22 can control the startup of the gas turbine 1 and the steam turbine 12 respectively. The water surface position can be observed in real time through the observation window 14 in the reserved groove 13, and water can be replenished in time. The hinge 16 can facilitate the opening and closing of the movable door 15 to facilitate the cleaning and replacement of the filter 5.

[0040] Before using the device, first, when the gas turbine 1 is started, the high-temperature gas it exhausts will be discharged into the bottom of the inner side of the hollow box 3. The hot air flow can be filtered by the filter 5 at the bottom of the sealing plate 4. At the same time, the flow of air will drive the fan blades 8 to rotate, and the transmission of the conveyor belt 7 can simultaneously drive the two rotating blocks 6 to rotate, thereby driving the stirring blades 9 to rotate, thereby stirring the water stored in the hollow box 3, increasing the contact area between the water and the sealing plate 4, and making it evenly heated. Through the above process, the evaporated steam will flow into the hollow cover 10 and drive the rotating blades 11 to rotate, thereby driving the steam turbine 12 to rotate;

[0041] When the water in the hollow box 3 is consumed, the float 204 will float up and down with the water surface. Through this floating, when the water is full, the float 204 can drive the baffle 203 to move up and down and compress the spring telescopic rod 202. Through a further operating mechanism, when the water storage is insufficient, the spring telescopic rod 202 will drive the baffle 203 to move by releasing elastic potential energy. Through such a design, when the water is full, the baffle 203 will block the reserved hole 205, thereby preventing the water in the water tank 201 from flowing into the hollow box 3. Through the opposite situation, when the water storage is insufficient, the baffle 203 will expose the reserved hole 205, so that the water in the water tank 201 can flow into the hollow box 3.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gas turbine exhaust system based on waste heat recovery, comprising a gas turbine (1), characterized in that: The right side of the gas turbine (1) is connected to a hollow box (3), the middle part of the inner side of the hollow box (3) is connected to a sealing plate (4), the left and right sides of the bottom of the sealing plate (4) are connected to filter screens (5), the left and right sides of the inner wall of the sealing plate (4) are rotatably connected to rotating blocks (6), a conveyor belt (7) is provided on the outer side of the rotating block (6), and the two rotating blocks (6) are connected by transmission through the conveyor belt (7), the bottom of the rotating block (6) on the left side passes through the sealing plate (4) and is connected to the fan blade (8), the top of the rotating block (6) on the right side passes through the sealing plate (4) and is connected to the fan blade (8), and the top of the rotating block (6) on the right side passes through the sealing plate (4). The plate (4) is connected to a stirring blade (9), the top of the right end of the hollow box (3) is connected to a hollow cover (10), the inner side of the hollow cover (10) is rotatably connected to a rotating blade (11), the right side of the hollow cover (10) is connected to a steam turbine (12), the input end of the steam turbine (12) passes through the hollow cover (10) and is connected to the rotating blade (11), the bottom of the right side of the hollow box (3) is connected to an air outlet (17), and a water inlet mechanism (2) is provided on the inner side of the hollow box (3), and the water inlet mechanism (2) is used to automatically replenish water after the stored water is used up.

2. The gas turbine exhaust system based on waste heat recovery according to claim 1, characterized in that: The water inlet mechanism (2) comprises a water tank (201), the water tank (201) being connected to the top of the gas turbine (1), a reserved hole (205) being provided at the top of the left side of the hollow box (3), the right side of the gas turbine (1) being in communication with the reserved hole (205), a spring telescopic rod (202) being connected to the top of the inner wall of the hollow box (3), the other end of the spring telescopic rod (202) being connected to a baffle (203), and a float (204) being connected to the bottom of the baffle (203).

3. The gas turbine exhaust system based on waste heat recovery according to claim 2, characterized in that: The left side of the top of the water tank (201) is connected to a water injection pipe (20), and a dust cover (21) is provided on the top of the water injection pipe (20).

4. The gas turbine exhaust system based on waste heat recovery according to claim 2, characterized in that: The front and rear sides of the bottom of the water tank (201) are both connected to connecting plates (18), the bottom of the connecting plate (18) is connected to a bracket (19), and the outer side of the bracket (19) is connected to the gas turbine (1).

5. The gas turbine exhaust system based on waste heat recovery according to claim 1, characterized in that: The left and right sides of the bottom of the gas turbine (1) are both connected to a connecting frame (23), the bottom of the connecting frame (23) is connected to a bottom plate (24), the outer wall of the bottom plate (24) is connected to positioning blocks (25) on all sides, and the outer side of the positioning block (25) is provided with a positioning hole (26).

6. The gas turbine exhaust system based on waste heat recovery according to claim 1, characterized in that: The front side of the gas turbine (1) is connected to a controller (22), and the controller (22) is electrically connected to the gas turbine (1) and the steam turbine (12) respectively.

7. The gas turbine exhaust system based on waste heat recovery according to claim 1, characterized in that: A reserved groove (13) is provided in the middle of the front end of the hollow box (3), and an observation window (14) is connected to the inner side of the reserved groove (13).

8. The gas turbine exhaust system based on waste heat recovery according to claim 1, characterized in that: A movable door (15) is provided at the bottom of the hollow box (3), and hinges (16) are connected to the left and right sides of the outer wall of the movable door (15). The movable door (15) is rotatably connected to the hollow box (3) via the hinges (16).

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