Steam turbine waste heat power generation device

Abstract

The utility model discloses a steam turbine waste heat power generation device, which relates to the technical field of waste heat power generation and comprises an outer box, a high-temperature waste gas pipe and an exhaust pipe are arranged on the outer box, the gas inlet end of the high-temperature waste gas pipe is connected with a steam turbine, and a waste heat boiler is arranged on the outer box. A mounting box, a generator, a driving gear, a driven gear, a second bevel gear and a bevel gear column are arranged at the top of the waste heat boiler through a cover plate, an air outlet pipe is arranged on the waste heat boiler, and an impeller and a first bevel gear are arranged on the waste heat boiler through a rotating shaft. High-temperature waste gas is used for driving the waste heat boiler to conduct heat energy conversion, the energy utilization efficiency is improved, direct emission of the waste gas is reduced, the purposes of energy conservation and emission reduction can be achieved, meanwhile, continuous energy conversion is achieved between the waste heat boiler and the generator in the device through impeller, bevel gear and gear transmission, and energy conservation and emission reduction are achieved. And heat energy is converted into mechanical energy and finally converted into electric energy, so that the comprehensive utilization efficiency of energy is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat power generation, in particular to a steam turbine waste heat power generation device. Background Art

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam power device. High-temperature and high-pressure steam passes through a fixed nozzle to become an accelerated airflow and is then sprayed onto the blades, causing the rotor equipped with the blade rows to rotate and perform work externally. In the process of generating electricity in a thermal power plant, high-temperature steam is often passed through a steam turbine to drive the rotor to rotate and generate electricity. After the high-temperature steam passes through the steam turbine, most of it is directly discharged after condensation, which wastes the remaining heat in the steam. Waste heat power generation equipment can be used to recover the waste heat.

[0003] In the prior art, there are still some problems in the design and application of the existing steam turbine waste heat power generation device. For example, the device has a complex structure and is difficult to maintain; the heat recovery efficiency is not high and the power generation efficiency is limited; and the safety and stability of the device need to be further optimized. Therefore, we propose a steam turbine waste heat power generation device. Utility Model Content

[0004] The purpose of the utility model is to provide a steam turbine waste heat power generation device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A steam turbine waste heat power generation device comprises an outer box, a plurality of legs are evenly arranged on the bottom of the outer box, a high-temperature exhaust pipe is also arranged on the outer box, an air inlet end of the high-temperature exhaust pipe is connected to the steam turbine, an exhaust pipe is also arranged on the outer box, a waste heat boiler is also arranged on the outer box, a cover plate is also arranged on the top of the waste heat boiler, an exhaust pipe is arranged on the waste heat boiler, an impeller is also arranged inside the waste heat boiler through a rotating shaft, an installation box is also arranged on the top of the cover plate, a first bevel gear is arranged at the end of the rotating shaft of the impeller, a bevel gear column is also rotatably arranged on the cover plate, one end of the bevel gear column is meshed with the first bevel gear, a driving gear is also arranged inside the installation box through a rotating shaft, a second bevel gear is arranged at the end of the rotating shaft of the driving gear, the second bevel gear is meshed with the other end of the bevel gear column, a generator is also arranged inside the installation box, a driven gear is arranged on the power input shaft of the generator through a key connection, and the driven gear is meshed with the driving gear.

[0007] As a further solution of the utility model: a condensation box is also arranged on the right side of the cover plate through a fixing plate, the air outlet end of the air outlet pipe is connected to the condensation box, a condensation plate is also arranged inside the condensation box, a water inlet pipe is also arranged on the condensation box, and the water outlet end of the water inlet pipe is connected to the waste heat boiler.

[0008] As a further solution of the utility model: a sliding rod is also arranged at the bottom of the cover plate through a supporting plate, a moving block is arranged on the sliding rod, a plug rod is arranged on the side wall of the moving block, and a plurality of slots used in conjunction with the plug rod are evenly arranged on the side wall of the waste heat boiler.

[0009] As a further solution of the utility model: a water injection pipe is also provided on the condensation box.

[0010] As a further solution of the utility model: a return spring is also sleeved on the outer side of the slide rod.

[0011] As a further solution of the utility model: the high-temperature exhaust gas pipe, the exhaust pipe and the outlet pipe are all provided with a one-way valve.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. The device effectively utilizes the high-temperature exhaust gas discharged from the steam turbine as a heat source by connecting the high-temperature exhaust gas pipe of the steam turbine, driving the waste heat boiler for heat energy conversion, and then generating steam or hot water, thereby improving energy utilization efficiency, reducing direct exhaust gas emissions, and helping to achieve the goal of energy conservation and emission reduction. At the same time, the waste heat boiler and the generator inside the device realize continuous energy conversion through impellers, bevel gears and gear transmission, converting thermal energy into mechanical energy and finally into electrical energy, further improving the comprehensive utilization efficiency of energy. In addition, under the action of multiple sets of one-way valves, the unidirectionality of gas flow is ensured, avoiding backflow and energy loss;

[0014] 2. The cover plate facilitates the cleaning of the interior of the waste heat boiler and improves the convenience of maintenance operations. The cover plate is used in conjunction with the plug rod and the card slot to ensure the sealing of the cover plate. In addition, the condenser box and water injection pipe and other components set in the device not only help to condense steam and recover heat energy, but also conveniently add cooling water to the condenser box through the water injection pipe, ensuring the continuous and stable operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of an embodiment of the utility model.

[0016] Figure 2 It is a schematic diagram of the internal structure of the waste heat boiler in the embodiment of the utility model.

[0017] Figure 3It is a structural schematic diagram of the cover plate in an embodiment of the utility model.

[0018] Figure 4 It is a schematic diagram of the structure of location A in an embodiment of the present utility model.

[0019] Notes on the figure markings: 1. outer box; 2. support foot; 3. high-temperature exhaust pipe; 4. exhaust pipe; 5. waste heat boiler; 6. impeller; 7. first bevel gear; 8. bevel gear column; 9. water inlet pipe; 10. condenser box; 1001. water injection pipe; 11. outlet pipe; 12. condenser plate; 13. cover plate; 14. installation box; 15. driving gear; 16. second bevel gear; 17. generator; 18. driven gear; 19. support plate; 20. slide rod; 21. moving block; 22. return spring; 23. plug rod; 24. slot. DETAILED DESCRIPTION

[0020] The following embodiments will be combined with the accompanying drawings to describe the utility model in detail. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shape, thickness or height of each component can be enlarged or reduced. The various embodiments listed in the utility model are only used to illustrate the utility model, and are not used to limit the scope of the utility model. Any obvious modifications or changes made to the utility model do not depart from the spirit and scope of the utility model.

[0021] Example

[0022] See also Figures 1 to 4 In an embodiment of the utility model, a steam turbine waste heat power generation device includes an outer box 1, and a plurality of support legs 2 are evenly arranged on the bottom of the outer box 1. Under the action of the support legs 2, the stability of the device during use is guaranteed. A high-temperature exhaust pipe 3 is also provided on the outer box 1, and the air inlet end of the high-temperature exhaust pipe 3 is connected to the steam turbine. Under the action of the high-temperature exhaust pipe 3, the high-temperature exhaust gas generated when the steam turbine is working can be introduced into the outer box 1. An exhaust pipe 4 is also provided on the outer box 1. Under the action of the exhaust pipe 4, the fluidity of the gas is guaranteed.

[0023] The outer box 1 is also provided with a waste heat boiler 5, and the high temperature exhaust gas inside the outer box 1 can be used to heat the liquid inside the waste heat boiler 5. A cover plate 13 is also provided on the top of the waste heat boiler 5. Under the action of the cover plate 13, the use efficiency of the waste heat boiler 5 is guaranteed. A condensation box 10 is also provided on the right side of the cover plate 13 through a fixed plate. An air outlet pipe 11 is provided on the waste heat boiler 5, and the air outlet end of the air outlet pipe 11 is connected to the condensation box 10. A condensation plate 12 is also provided inside the condensation box 10. A water inlet pipe 9 is also provided on the condensation box 10, and the water outlet end of the water inlet pipe 9 is connected to the waste heat boiler 5. The waste heat boiler 5 is connected, and an impeller 6 is also arranged inside the waste heat boiler 5 through a rotating shaft. When the water inside the waste heat boiler 5 is heated, steam is generated. The steam drives the impeller 6 to rotate, and at the same time, the steam enters the condensation box 10 through the exhaust pipe 11. Thereafter, under the action of the condensation plate 12, the steam can be condensed. The condensed water flows back to the waste heat boiler 5 through the water inlet pipe 9, thereby realizing the recycling of water. A water injection pipe 1001 is also arranged on the condensation box 10. Under the action of the water injection pipe 1001, it is convenient to add the water required for heating to the condensation box 10.

[0024] A mounting box 14 is also provided on the top of the cover plate 13. A first bevel gear 7 is provided at the end of the rotating shaft of the impeller 6. A bevel gear column 8 is also rotatably provided on the cover plate 13. One end of the bevel gear column 8 is meshed with the first bevel gear 7. A driving gear 15 is provided inside the mounting box 14 through a rotating shaft. A second bevel gear 16 is provided at the end of the rotating shaft of the driving gear 15. The second bevel gear 16 is meshed with the other end of the bevel gear column 8. A generator 17 is also provided inside the mounting box 14. A driven gear 18 is provided on the power input shaft of the generator 17 through a key connection. The driven gear 18 is meshed with the driving gear 15. When the impeller 6 rotates, the driving gear 15 can be driven to rotate through the first bevel gear 7, the bevel gear column 8 and the second bevel gear 16, so that the rotor inside the generator 17 is driven to rotate through the driven gear 18, thereby cutting the magnetic flux lines to generate electricity, thereby completing the waste heat power generation work for the steam turbine, thereby improving the utilization efficiency of waste heat and reducing the waste of resources.

[0025] A slide bar 20 is also provided at the bottom of the cover plate 13 through the support plate 19, and a moving block 21 is provided on the slide bar 20, and a plug rod 23 is provided on the side wall of the moving block 21. A plurality of slots 24 used in conjunction with the plug rod 23 are also evenly provided on the side wall of the waste heat boiler 5. Under the action of the slot 24 and the plug rod 23, the cover plate 13 can be fixed, thereby ensuring the sealing of the waste heat boiler 5, and then ensuring the efficiency of steam driving the impeller 6, so as to complete the subsequent power generation work. A reset spring 22 is also sleeved on the outer side of the slide bar 20. Under the action of the reset spring 22, the fixing quality of the plug rod 23 to the slot 24 is guaranteed. One-way valves are provided on the high-temperature exhaust gas pipe 3, the exhaust pipe 4 and the outlet pipe 11. Under the action of the one-way valve, the occurrence of gas reflux is reduced, thereby ensuring the use efficiency of the waste heat power generation device.

[0026] In actual use, the high-temperature exhaust gas generated by the operation of the steam turbine is introduced into the outer box 1 through the high-temperature exhaust gas pipe 3. These high-temperature exhaust gases enter the waste heat boiler 5, heat the water in the boiler, and generate steam. The steam then drives the impeller 6 in the waste heat boiler 5 to rotate. At this time, the first bevel gear 7, the bevel gear column 8 and the second bevel gear 16 drive the driving gear 15 to rotate, so that the driven gear 18 drives the rotor inside the generator 17 to rotate, cutting the magnetic flux lines to generate electrical energy, and completing the waste heat power generation work. At the same time, the generated steam enters the condensation box 10 through the outlet pipe 11, condenses into water under the action of the condensation plate 12, and then flows back to the waste heat boiler 5 through the water inlet pipe 9, so as to realize the recycling of water. When it is necessary to clean the inside of the waste heat boiler 5, the moving block 21 is pulled outward so that the insertion rod 23 releases the restriction on the card slot 24. At this time, the cover plate 13 can be removed, so as to clean the inside of the waste heat boiler 5, thereby ensuring the use efficiency of the waste heat power generation device.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A steam turbine waste heat power generation device, comprising an outer box (1), wherein a plurality of legs (2) are evenly arranged at the bottom of the outer box (1), characterized in that: The outer box (1) is also provided with a high-temperature exhaust gas pipe (3), the air inlet end of the high-temperature exhaust gas pipe (3) is connected to the steam turbine, the outer box (1) is also provided with an exhaust pipe (4), the outer box (1) is also provided with a waste heat boiler (5), the top of the waste heat boiler (5) is also provided with a cover plate (13), the waste heat boiler (5) is provided with an exhaust pipe (11), the waste heat boiler (5) is also provided with an impeller (6) via a rotating shaft, the top of the cover plate (13) is also provided with a mounting box (14), the end of the rotating shaft of the impeller (6) is provided with a first bevel gear (7), the cover plate (1 3) is also rotatably provided with a bevel gear column (8), one end of the bevel gear column (8) is meshed with the first bevel gear (7), a driving gear (15) is also provided inside the installation box (14) through a rotating shaft, a second bevel gear (16) is provided at the end of the rotating shaft of the driving gear (15), the second bevel gear (16) is meshed with the other end of the bevel gear column (8), a generator (17) is also provided inside the installation box (14), a driven gear (18) is provided on the power input shaft of the generator (17) through a key connection, and the driven gear (18) is meshed with the driving gear (15).

2. The steam turbine waste heat power generation device according to claim 1, characterized in that: A condensation box (10) is also arranged on the right side of the cover plate (13) via a fixing plate, the outlet end of the outlet pipe (11) is connected to the condensation box (10), a condensation plate (12) is also arranged inside the condensation box (10), and a water inlet pipe (9) is also arranged on the condensation box (10), and the water outlet end of the water inlet pipe (9) is connected to the waste heat boiler (5).

3. The steam turbine waste heat power generation device according to claim 1, characterized in that: A slide bar (20) is also provided at the bottom of the cover plate (13) through a support plate (19), a moving block (21) is provided on the slide bar (20), an insertion rod (23) is provided on the side wall of the moving block (21), and a plurality of slots (24) used in conjunction with the insertion rod (23) are also evenly provided on the side wall of the waste heat boiler (5).

4. The steam turbine waste heat power generation device according to claim 2, characterized in that: The condensation box (10) is also provided with a water injection pipe (1001).

5. The steam turbine waste heat power generation device according to claim 3, characterized in that: A return spring (22) is also sleeved on the outer side of the slide rod (20).

6. The steam turbine waste heat power generation device according to claim 1, characterized in that: The high-temperature exhaust gas pipe (3), the exhaust pipe (4) and the outlet pipe (11) are all provided with a one-way valve.

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