High-back-pressure heat supply device of steam turbine

Abstract

The utility model relates to the technical field of steam turbine heat supply, and discloses a steam turbine high-back-pressure heat supply device which comprises a smoke outlet, the outer wall of the smoke outlet is fixedly connected with a fixed box, the interior of the fixed box is rotatably connected with a rotating column, the top end of the rotating column is fixedly connected with a rotating button, the interior of the fixed box is fixedly connected with a fixed plate, and the top end of the rotating column is fixedly connected with the rotating button. And the lower surface of the fixing plate is fixedly connected with a limiting plate, and the outer wall of the rotating column is rotationally connected to the interior of the fixing plate. According to the utility model, the sliding frame moves up and down to promote the clamping column to slide on the inner wall of the sliding frame and the clamping column to slide on the inner wall of the limiting plate at the same time, so that the clamping column slides in the fixed box and the clamping column slides in the smoke exhaust filter plate, thereby achieving the effect of quickly dismounting and mounting the filter plate at the smoke outlet; therefore, the filter plate can be conveniently taken down to be cleaned and maintained, the filtering effect is kept, a smoke exhaust channel of the boiler is kept unblocked, smoke exhaust resistance is reduced, and the heat efficiency of the boiler is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine heating, in particular to a high back-pressure heating device for steam turbines. Background Technique

[0002] The high back-pressure heating device for steam turbines is a common thermal energy conversion device, usually used to generate steam to drive the connected steam turbine to generate electricity or provide mechanical power. This device combines the principles of a steam boiler and a steam turbine, and has the characteristics of high-efficiency energy conversion and flexible operation. The steam turbine uses the kinetic energy of steam to drive the rotor to rotate, thereby generating mechanical energy. The steam turbine usually includes high-pressure, medium-pressure and low-pressure stages to make full use of the energy of steam and improve the overall efficiency. The high back-pressure heating device for steam turbines has the advantages of high-efficiency energy conversion, stable operation and strong adaptability, and is widely used in power plants, factories, heating systems and other fields. At the same time, with the development of technology, some new high back-pressure heating devices for steam turbines also have the characteristics of energy conservation, environmental protection and emission reduction, which are of great significance to the sustainable development of the energy industry.

[0003] The traditional high back-pressure heating device for steam turbines cannot quickly disassemble and install the filter plate at the smoke outlet, which is not convenient for removing the filter plate for cleaning and maintenance, and cannot maintain the filtering effect and keep the boiler smoke exhaust passage unobstructed, reduce the smoke emission resistance, and improve the thermal efficiency of the boiler. Content of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides a high back-pressure heating device for steam turbines, aiming to improve the problem that the current high back-pressure heating device for steam turbines cannot quickly disassemble and install the filter plate at the smoke outlet, which is not convenient for removing the filter plate for cleaning and maintenance, and cannot maintain the filtering effect and keep the boiler smoke exhaust passage unobstructed, reduce the smoke emission resistance, and improve the thermal efficiency of the boiler.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A steam turbine high back-pressure heating device includes a smoke exhaust port. The outer wall of the smoke exhaust port is fixedly connected with a fixed box. The inside of the fixed box is rotatably connected with a rotating column. The top end of the rotating column is fixedly connected with a rotary knob. The inside of the fixed box is fixedly connected with a fixed plate. The lower surface of the fixed plate is fixedly connected with a limiting plate. The outer wall of the rotating column is rotatably connected inside the fixed plate. The outer wall of the rotating column is fixedly connected with a gear. The outer wall of the rotating column is fixedly connected with an eccentric wheel. The outer wall of the eccentric wheel is slidably connected with a sliding frame. The inner wall of the sliding frame is slidably connected with a clamping column. The outer wall of the clamping column is slidably connected inside the limiting plate. The outer wall of the clamping column is slidably connected inside the fixed box. The inner wall of the smoke exhaust port is slidably connected with a smoke exhaust filter plate. The outer wall of the clamping column is slidably connected inside the smoke exhaust filter plate. The outer wall of the smoke exhaust port is provided with a fixing component.

[0007] Preferably, the fixing component includes a rear smoke box. The inner wall of the rear smoke box is fixedly connected to the outer wall of the smoke exhaust port. The inner wall of the rear smoke box is fixedly connected with a housing.

[0008] Preferably, the lower surface of the housing is fixedly connected with legs. The outer wall of the housing is fixedly connected with a front smoke box.

[0009] Preferably, the outer wall of the housing is fixedly connected with a main air hole. The inner wall of the front smoke box is fixedly installed with a smoke box plate.

[0010] Preferably, an ignition device is arranged on the outer wall of the front smoke box. The inner part of the housing is fixedly connected with a rear tube plate.

[0011] Preferably, a furnace lining is fixedly connected inside the rear tube plate. The outer wall of the furnace lining is fixedly connected inside the front smoke box.

[0012] Preferably, one end of the furnace lining is fixedly connected inside the ignition device. One end of the furnace lining is fixedly connected with a combustion chamber. The inside of the combustion chamber is fixedly connected with a first return smoke tube.

[0013] Preferably, one end of the first return smoke tube is fixedly connected inside the rear tube plate. A front tube plate is arranged inside the housing. The inside of the front tube plate is fixedly connected with a second return smoke tube. The other end of the second return smoke tube is fixedly connected inside the rear tube plate.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the present utility model, when the sliding frame moves up and down, it causes the clamping post to slide on the inner wall of the sliding frame and at the same time causes the clamping post to slide on the inner wall of the limiting plate, so that the clamping post slides inside the fixed box and inside the smoke exhaust filter plate, thereby achieving the effect of quickly disassembling and installing the filter plate at the smoke outlet. Furthermore, the filter plate can be conveniently removed for cleaning and maintenance, maintaining the filtering effect, keeping the boiler smoke exhaust passage unobstructed, reducing the resistance of flue gas emission, and improving the thermal efficiency of the boiler.

[0016] 2. In the present utility model, the flue gas passes through the combustion chamber and then enters the inside of the front smoke box through the first return flue pipe, heating the water inside the shell. Then, it enters the inside of the rear smoke box through the second return flue pipe fixedly connected inside the rear tube plate and passing through the front tube plate, and finally is discharged through the smoke outlet. Thereby, the waste heat in the boiler smoke exhaust is utilized through the increased return flue pipe. Furthermore, it can be redirected to the boiler furnace or the flue gas waste heat recovery system for reuse, improving the thermal efficiency of the entire boiler system and reducing energy consumption.

[0017] 3. In the present utility model, the clamping post slides inside the fixed box and inside the smoke exhaust filter plate, thereby achieving the effect of reducing the contact time and operation difficulty of maintenance personnel and improving the safety of maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a perspective view of a steam turbine high back-pressure heating device proposed by the present utility model;

[0019] Figure 2 is a schematic diagram of a fixing plate of a steam turbine high back-pressure heating device proposed by the present utility model;

[0020] Figure 3 is a schematic diagram of a smoke exhaust filter plate of a steam turbine high back-pressure heating device proposed by the present utility model;

[0021] Figure 4 is a sectional view of the shell of a steam turbine high back-pressure heating device proposed by the present utility model.

[0022] Legend Explanation:

[0023] 1. Smoke outlet; 2. Fixed box; 3. Rotating column; 4. Knob; 5. Fixing plate; 6. Gear; 7. Eccentric wheel; 8. Sliding frame; 9. Clamping post; 10. Limiting plate; 11. Smoke exhaust filter plate; 12. Rear smoke box; 13. Shell; 14. Leg; 15. Front smoke box; 16. Ignition device; 17. Main air hole; 18. Rear tube plate; 19. Furnace drum; 20. Combustion chamber; 21. First return flue pipe; 22. Smoke box plate; 23. Second return flue pipe; 24. Front tube plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] Referring to Figure 1 - Figure 3 , an embodiment provided by the present invention: a steam turbine high back pressure heating device, including a smoke exhaust port 1, a fixed box 2 is fixedly connected to the outer wall of the smoke exhaust port 1, a rotating column 3 is rotatably connected to the inside of the fixed box 2, a rotating knob 4 is fixedly connected to the top end of the rotating column 3, a fixed plate 5 is fixedly connected to the inside of the fixed box 2, a limiting plate 10 is fixedly connected to the lower surface of the fixed plate 5, the outer wall of the rotating column 3 is rotatably connected to the inside of the fixed plate 5, a gear 6 is fixedly connected to the outer wall of the rotating column 3, an eccentric wheel 7 is fixedly connected to the outer wall of the rotating column 3, a sliding frame 8 is slidably connected to the outer wall of the eccentric wheel 7, a clamping column 9 is slidably connected to the inner wall of the sliding frame 8, the outer wall of the clamping column 9 is slidably connected to the inside of the limiting plate 10, the outer wall of the clamping column 9 is slidably connected to the inside of the fixed box 2, a smoke exhaust filter plate 11 is slidably connected to the inner wall of the smoke exhaust port 1, and the outer wall of the clamping column 9 is slidably connected to the inside of the smoke exhaust filter plate 11. A fixing component is arranged on the outer wall of the smoke exhaust port 1;

[0026] Specifically, the smoke exhaust port 1 plays a role in fixing the fixed box 2, the fixed box 2 plays a role in fixing the fixed plate 5, the rotating knob 4 plays a role in rotating the rotating column 3 and thus plays a role in rotating the gear 6 and the eccentric wheel 7, the sliding frame 8 plays a role in limiting the clamping column 9, the eccentric wheel 7 plays a role in moving the clamping column 9, the clamping column 9 plays a role in clamping the smoke exhaust filter plate 11. When the clamping column 9 slides inward, the smoke exhaust filter plate 11 can be quickly disassembled, and when the clamping column 9 slides outward, the smoke exhaust filter plate 11 can be quickly installed. Only by rotating the rotating knob 4 to drive the rotating column 3 to rotate inside the fixed box 2, the rotating column 3 can be driven to rotate on the fixed plate 5 inside the fixed box 2, so that the rotating column 3 drives the gear 6 and the eccentric wheel 7 to rotate. The rotation of the eccentric wheel 7 causes the sliding frame 8 to rotate. However, since the clamping column 9 slides inside the limiting plate 10 to limit the sliding frame 8, the outer wall of the sliding frame 8 slides on the outer wall of the eccentric wheel 7. Due to the action of the eccentric wheel 7, the sliding frame 8 moves slightly up and down. Similarly, the up and down movement of the sliding frame 8 causes the clamping column 9 to slide on the inner wall of the sliding frame 8 and at the same time causes the clamping column 9 to slide on the inner wall of the limiting plate 10, so that the clamping column 9 slides inside the fixed box 2, and further causes the clamping column 9 to slide inside the smoke exhaust filter plate 11.

[0027] Referring to Figure 1, the fixing component includes a rear smoke box 12, the inner wall of the rear smoke box 12 is fixedly connected to the outer wall of the smoke exhaust port 1, and the inner wall of the rear smoke box 12 is fixedly connected with a housing 13;

[0028] Specifically, the rear smoke box 12 plays a role in fixing the smoke exhaust port 1, and the housing 13 plays a role in fixing the rear smoke box 12.

[0029] Refer to Figure 1 and Figure 4 , the lower surface of the housing 13 is fixedly connected with a support leg 14, and the outer wall of the housing 13 is fixedly connected with a front smoke box 15; a main air hole 17 is fixedly connected to the outer wall of the housing 13, and a smoke box plate 22 is fixedly installed on the inner wall of the front smoke box 15; an ignition device 16 is arranged on the outer wall of the front smoke box 15, and a rear tube plate 18 is fixedly connected to the inside of the housing 13; a furnace liner 19 is fixedly connected to the inside of the rear tube plate 18, and the outer wall of the furnace liner 19 is fixedly connected to the inside of the front smoke box 15; one end of the furnace liner 19 is fixedly connected to the inside of the ignition device 16, one end of the furnace liner 19 is fixedly connected with a combustion chamber 20, and a first return flue pipe 21 is fixedly connected to the inside of the combustion chamber 20; one end of the first return flue pipe 21 is fixedly connected to the inside of the rear tube plate 18, a front tube plate 24 is arranged inside the housing 13, a second return flue pipe 23 is fixedly connected to the inside of the front tube plate 24, and the other end of the second return flue pipe 23 is fixedly connected to the inside of the rear tube plate 18;

[0030] Specifically, the rear tube plate 18 and the front tube plate 24 play a role in fixing the second return flue pipe 23 and the first return flue pipe 21, and the rear tube plate 18 plays a role in fixing the furnace liner 19. By adding the second return flue pipe 23, the support leg 14 plays a supporting role for the housing 13. Start the ignition device 16, and the ignition device 16 starts to prompt the flame and flue gas to enter the inner wall of the furnace liner 19, heating the water inside the housing 13. The flue gas passes through the combustion chamber 20 and then enters the inside of the front smoke box 15 through the first return flue pipe 21, heating the water inside the housing 13, and then enters the inside of the rear smoke box 12 through the second return flue pipe 23 fixedly connected inside the rear tube plate 18 and through the front tube plate 24, and finally is discharged through the smoke exhaust port 1.

[0031] Working principle: When the device needs to be used, only need to rotate the knob 4 to drive the rotating column 3 to rotate inside the fixed box 2, and then it can drive the rotating column 3 to rotate the fixed plate 5 inside the fixed box 2, so that the rotating column 3 drives the gear 6 and the eccentric wheel 7 to rotate. The rotation of the eccentric wheel 7 causes the sliding frame 8 to rotate. However, since the clamping column 9 slides inside the limiting plate 10 to limit the sliding frame 8, the outer wall of the sliding frame 8 slides on the outer wall of the eccentric wheel 7. Due to the action of the eccentric wheel 7, the sliding frame 8 moves slightly up and down. Similarly, the up and down movement of the sliding frame 8 causes the clamping column 9 to slide on the inner wall of the sliding frame 8 and at the same time causes the clamping column 9 to slide on the inner wall of the limiting plate 10, so that the clamping column 9 slides inside the fixed box 2, and then the clamping column 9 slides inside the smoke exhaust filter plate 11, so as to achieve the effect of quickly disassembling and installing the filter plate at the smoke outlet. Furthermore, the filter plate can be conveniently removed for cleaning and maintenance, maintaining the filtering effect, keeping the smoke exhaust passage of the boiler unobstructed, reducing the resistance of smoke emission, improving the thermal efficiency of the boiler. Start the ignition device 16. The start of the ignition device 16 causes the flame and smoke to enter the inner wall of the furnace drum 19, heating the water inside the outer shell 13. The smoke passes through the combustion chamber 20 and then enters the inside of the front smoke box 15 through the first return flue 21, heating the water inside the outer shell 13, and then enters the inside of the rear smoke box 12 through the second return flue 23 fixedly connected inside the rear tube plate 18 and passing through the front tube plate 24, and finally is discharged through the smoke outlet 1, so as to achieve the effect of utilizing the waste heat in the boiler smoke exhaust through the increased return flue, and then it can be redirected to the boiler furnace or the flue gas waste heat recovery system for reuse, which can improve the thermal efficiency of the entire boiler system and reduce energy consumption. This device can not only achieve the effect of quickly disassembling and installing the filter plate at the smoke outlet, and then the filter plate can be conveniently removed for cleaning and maintenance, maintaining the filtering effect, keeping the smoke exhaust passage of the boiler unobstructed, reducing the resistance of smoke emission, improving the thermal efficiency of the boiler, but also can achieve the effect of utilizing the waste heat in the boiler smoke exhaust through the increased return flue, and then it can be redirected to the boiler furnace or the flue gas waste heat recovery system for reuse, which can improve the thermal efficiency of the entire boiler system and reduce energy consumption.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A steam turbine high back-pressure heating device, comprising an exhaust port (1), characterized in that: The outer wall of the smoke exhaust port (1) is fixedly connected with a fixed box (2). A rotating column (3) is rotatably connected inside the fixed box (2). The top end of the rotating column (3) is fixedly connected with a rotary knob (4). A fixed plate (5) is fixedly connected inside the fixed box (2). The lower surface of the fixed plate (5) is fixedly connected with a limiting plate (10). The outer wall of the rotating column (3) is rotatably connected inside the fixed plate (5). A gear (6) is fixedly connected to the outer wall of the rotating column (3). An eccentric wheel (7) is fixedly connected to the outer wall of the rotating column (3). A sliding frame (8) is slidably connected to the outer wall of the eccentric wheel (7). A clamping column (9) is slidably connected to the inner wall of the sliding frame (8). The outer wall of the clamping column (9) is slidably connected inside the limiting plate (10). The outer wall of the clamping column (9) is slidably connected inside the fixed box (2). A smoke exhaust filter plate (11) is slidably connected to the inner wall of the smoke exhaust port (1). The outer wall of the clamping column (9) is slidably connected inside the smoke exhaust filter plate (11). A fixing assembly is arranged on the outer wall of the smoke exhaust port (1).

2. The steam turbine high back-pressure heat supply device according to claim 1, wherein: The fixing assembly includes a rear smoke box (12). The inner wall of the rear smoke box (12) is fixedly connected to the outer wall of the smoke exhaust port (1). A housing (13) is fixedly connected to the inner wall of the rear smoke box (12).

3. The steam turbine high back-pressure heating device according to claim 2, wherein: A leg (14) is fixedly connected to the lower surface of the housing (13). A front smoke box (15) is fixedly connected to the outer wall of the housing (13).

4. A steam turbine high back-pressure heating device according to claim 3, characterized in that: A main air hole (17) is fixedly connected to the outer wall of the housing (13). A smoke box plate (22) is fixedly installed on the inner wall of the front smoke box (15).

5. A steam turbine high back-pressure heating device according to claim 3, characterized in that: An ignition device (16) is arranged on the outer wall of the front smoke box (15). A rear tube plate (18) is fixedly connected to the inside of the housing (13).

6. The steam turbine high back-pressure heat supply device according to claim 5, characterized in that: A furnace lining (19) is fixedly connected to the inside of the rear tube plate (18). The outer wall of the furnace lining (19) is fixedly connected to the inside of the front smoke box (15).

7. A steam turbine high back-pressure heating device according to claim 6, characterized in that: One end of the furnace lining (19) is fixedly connected to the inside of the ignition device (16). One end of the furnace lining (19) is fixedly connected to a combustion chamber (20). A first return flue pipe (21) is fixedly connected to the inside of the combustion chamber (20).

8. The steam turbine high back-pressure heating device according to claim 7, characterized in that: One end of the first return flue pipe (21) is fixedly connected to the inside of the rear tube plate (18). A front tube plate (24) is arranged inside the housing (13). A second return flue pipe (23) is fixedly connected to the inside of the front tube plate (24). The other end of the second return flue pipe (23) is fixedly connected to the inside of the rear tube plate (18).

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