Power plant steam turbine drainage heat recovery device

Abstract

The invention discloses a power plant steam turbine drainage heat recovery device which comprises a bottom plate, and a moving structure, a lifting structure, a pair of clamping structures, a heat exchange structure and a cleaning structure are arranged on the bottom plate. Steam enters the snakelike heat exchange pipe through the steam pipe, liquid is placed in the heat exchange box through the liquid inlet pipe, hot steam makes contact with the liquid, the liquid absorbs heat of the hot steam, then heat recovery is conducted, the steam is discharged through the snakelike heat exchange pipe after heat exchange, the condensed steam becomes condensed water, and the condensed water is discharged through the liquid discharging pipe on the air inlet pipe. And the air inlet pipe is obliquely arranged, so that condensate water is conveniently discharged.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat recovery, and particularly relates to a heat recovery device for the drain water of a steam turbine in a power plant. Background Art

[0002] The steam turbine, also known as the steam engine, is a rotary steam power device. High-temperature and high-pressure steam passes through a fixed nozzle to become an accelerated air flow and then jets onto the blades, causing the rotor equipped with the blade row to rotate. The steam turbine converts internal energy into mechanical energy, drives the generator coaxial with it to rotate, cuts the magnetic induction lines to generate the electric energy used in people's lives. The steam turbine is the main equipment of modern thermal power plants and is also used in the metallurgical industry, chemical industry, and ship power plants.

[0003] Generally, power plants need to use heat recovery devices to recover the waste heat of steam and improve energy utilization efficiency. At present, most of the heat recovery devices for the drain water of steam turbines in power plants have a single structure and low heat recovery efficiency. Summary of the Invention

[0004] In order to solve the above problems existing in the prior art, the purpose of the present invention is to provide a heat recovery device for the drain water of a steam turbine in a power plant.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A heat recovery device for the drain water of a steam turbine in a power plant, including a bottom plate, on which there is

[0007] a moving structure located on the bottom plate. The moving structure includes moving wheels and a connecting plate. The connecting plate is installed on the lower wall surface of the bottom plate, the moving wheels are installed on the bottom plate, and a fixing component is provided on the bottom plate;

[0008] a lifting structure located on the bottom plate. The lifting structure includes a support frame installed on the bottom plate. A rotating frame is provided on the support frame, a guide rod is movably provided on the support frame, a moving plate is provided on the guide rod, a lead screw is movably provided on the rotating frame, and a driving component is provided on the support frame;

[0009] a pair of clamping structures located on the moving plate. One of the pair of clamping structures includes a chute and a fixing plate. The chute is provided on the moving plate, the fixing plate is installed on the moving plate, a first threaded rod is movably provided on the moving plate, a clamping plate is provided on the first threaded rod, a working box is provided on the fixing plate, and a limiting component is provided on the working box;

[0010] The heat exchange structure is located on the moving plate. The heat exchange structure includes a heat exchange box, which is provided with a serpentine heat exchange tube. The heat exchange box is provided with an intake pipe, and the intake pipe is connected to one end of the serpentine heat exchange tube. A drain pipe is provided on the intake pipe. The heat exchange box is provided with a liquid inlet pipe and a liquid outlet pipe.

[0011] The cleaning structure is located on the heat exchange box. The fixing structure includes a fixing frame, which is installed on the heat exchange box. A slide rail is provided on the fixing frame, and a slider is movably arranged on the slide rail. A connecting block is provided on the slider, a sliding frame is provided on the connecting block, a cleaning brush is provided on the sliding frame, and a transmission component is provided on the fixing frame.

[0012] As a preference of the present invention, the fixing component includes a connecting plate and a second threaded rod. The connecting plate is installed on the bottom plate, the second threaded rod is movably arranged on the connecting plate, and a pressing plate is provided at one end of the second threaded rod.

[0013] As a preference of the present invention, a rotating handle is provided at one end of the second threaded rod away from the pressing plate.

[0014] As a preference of the present invention, the driving component includes a first motor and a first belt pulley. The first motor is installed on the support frame, the support frame is arranged on the rotating frame, a second belt pulley is provided at the driving end of the first motor, and a transmission belt is provided on the first belt pulley and the second belt pulley.

[0015] As a preference of the present invention, the limiting component includes a moving rod and a sliding plate. The moving rod is movably installed on the fixing plate, a limiting hole is provided on the moving rod, the sliding plate is movably arranged on the working box, a pulling rod is provided on the sliding plate and one end of the pulling rod penetrates through the side wall surface of the working box, a spring is provided on the sliding plate, and a limiting rod is provided on the sliding plate.

[0016] As a preference of the present invention, the transmission component includes a second motor and a driven belt pulley. The driven belt pulley is movably arranged on the fixing frame, the second motor is installed on the fixing frame, a driving belt pulley is provided at the driving end of the second motor, a toothed belt is provided on the driving belt pulley and the driven belt pulley, and the toothed belt is connected to the connecting block.

[0017] As a preference of the present invention, a plurality of limiting holes are provided.

[0018] The beneficial effects of the present invention are as follows: As a heat recovery device for the condensate of a power plant steam turbine, the present invention connects the intake pipe to the steam outlet of the steam turbine. Steam enters the serpentine heat exchange tube through the steam pipe. Liquid is placed into the heat exchange box through the liquid inlet pipe. The hot steam contacts the liquid, and the liquid absorbs the heat of the hot steam, thereby recovering heat. After heat exchange, the steam is discharged through the serpentine heat exchange tube, and the condensed steam becomes condensate, which is discharged through the drain pipe on the intake pipe. The intake pipe is inclined to facilitate the discharge of condensate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0020] Figure 1 is a schematic structural diagram of the present invention;

[0021] Figure 2 is a front view structural diagram of the present invention;

[0022] Figure 3 is a schematic internal structure diagram of the heat exchange box of the present invention;

[0023] Figure 4 is a schematic internal structure diagram of the working box of the present invention;

[0024] Figure 5 is a schematic structural diagram of the cooperation between the slide rail and the slider of the present invention;

[0025] Figure 6 is a schematic structural diagram of the cooperation between the sliding frame and the cleaning brush of the present invention;

[0026] Figure 7 is a schematic structural diagram of the cooperation between the moving plate and the chute of the present invention

[0027] In the figure: 1, bottom plate; 2, moving wheel; 3, connecting plate; 4, second threaded rod; 5, pressing plate; 6, support frame; 7, rotating frame; 8, first pulley; 9, transmission belt; 10, lead screw; 11, first motor; 12, second pulley; 13, guide rod; 14, moving plate; 15, chute; 16, clamping plate; 17, fixing plate; 18, first threaded rod; 19, moving rod; 20, limiting hole; 21, working box; 22, sliding plate; 23, pulling rod; 24, spring; 25, limiting rod; 26, heat exchange box; 27, liquid inlet pipe; 28, liquid outlet pipe; 29, serpentine heat exchange tube; 30, intake pipe; 31, drain pipe; 32, fixing frame; 33, slide rail; 34, slider; 35, second motor; 36, driving pulley; 37, driven pulley; 38, toothed belt; 39, connecting block; 40, sliding frame; 41, cleaning brush. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0030] The following will be combined with Figures 1-5 to illustrate the specific implementation manners of the present invention. In one of the embodiments of the present invention, a heat recovery device for the condensate of a power plant steam turbine includes a bottom plate 1, and

[0031] a moving structure, which is located on the bottom plate 1. The moving structure includes moving wheels 2 and a connecting plate 3. The connecting plate 3 is installed on the lower wall surface of the bottom plate 1, and the moving wheels 2 are installed on the bottom plate 1. A fixing component is provided on the bottom plate 1;

[0032] a lifting structure, which is located on the bottom plate 1. The lifting structure includes a support frame 6. The support frame 6 is installed on the bottom plate 1. A rotating frame 7 is provided on the support frame 6. A guide rod 13 is movably provided on the support frame 6. A moving plate 14 is provided on the guide rod 13. A lead screw 10 is movably provided on the rotating frame 7. A driving component is provided on the support frame 6;

[0033] a pair of clamping structures, which are located on the moving plate 14. One of the pair of clamping structures includes a chute 15 and a fixing plate 17. The chute 15 is provided on the moving plate 14, and the fixing plate 17 is installed on the moving plate 14. A first threaded rod 18 is movably provided on the moving plate 14. A clamping plate 16 is provided on the first threaded rod 18. A working box 21 is provided on the fixing plate 17. A limiting component is provided on the working box 21;

[0034] a heat exchange structure, which is located on the moving plate 14. The heat exchange structure includes a heat exchange box 26. The heat exchange box 26 is provided with a serpentine heat exchange tube 29. An air inlet pipe 30 is provided on the heat exchange box 26 and the air inlet pipe 30 is connected to one end of the serpentine heat exchange tube 29. A drain pipe 31 is provided on the air inlet pipe 30. A liquid inlet pipe 27 is provided on the heat exchange box 26. A liquid outlet pipe 28 is provided on the heat exchange box 26;

[0035] A cleaning structure is located on the heat exchange box 26. The fixing structure includes a fixing frame 32 which is installed on the heat exchange box 26. A slide rail 33 is provided on the fixing frame 32. A slider 34 is movably arranged on the slide rail 33. A connecting block 39 is provided on the slider 34. A sliding frame 40 is provided on the connecting block 39. A cleaning brush 41 is provided on the sliding frame 40. A transmission component is provided on the fixing frame 32.

[0036] Beneficially, the fixing component includes a connecting plate 3 and a second threaded rod 4. The connecting plate 3 is installed on the bottom plate 1. The second threaded rod 4 is movably arranged on the connecting plate 3. One end of the second threaded rod 4 is provided with a pressing plate 5.

[0037] Beneficially, a rotating handle is provided at one end of the second threaded rod 4 away from the pressing plate 5.

[0038] Beneficially, the driving component includes a first motor 11 and a first belt pulley 8. The first motor 11 is installed on the support frame 6. The support frame 6 is arranged on the rotating frame 7. A second belt pulley 12 is provided at the driving end of the first motor 11. A transmission belt 9 is provided on the first belt pulley 8 and the second belt pulley 12.

[0039] Beneficially, the limiting component includes a moving rod 19 and a sliding plate 22. The moving rod 19 is movably installed on the fixing plate 17. A limiting hole 20 is provided on the moving rod 19. The sliding plate 22 is movably arranged on the working box 21. A pulling rod 23 is provided on the sliding plate 22 and one end of the pulling rod 23 penetrates through the side wall surface of the working box 21. A spring 24 is provided on the sliding plate 22. A limiting rod 25 is provided on the sliding plate 22.

[0040] Beneficially, the transmission component includes a second motor 35 and a driven belt pulley 37. The driven belt pulley 37 is movably arranged on the fixing frame 32. The second motor 35 is installed on the fixing frame 32. A driving belt pulley 36 is provided at the driving end of the second motor 35. A toothed belt 38 is provided on the driving belt pulley 36 and the driven belt pulley 37 and the toothed belt 38 is connected to the connecting block 39.

[0041] Beneficially, a plurality of limiting holes 20 are provided.

[0042] Working principle of the present invention: The device is driven to move by a number of moving wheels 2, which can drive the heat exchange box 26 to move to the air outlet of the steam turbine. It stops at the predetermined position. The second threaded rod 4 is rotated, and the second threaded rod 4 drives the pressing plate 5 to move into contact with the placement plane, thereby fixing the whole device. The first motor 11 is driven, and the first motor 11 drives the second pulley 12 to rotate. The transmission belt 9 drives the first pulley 8 to rotate under the action of the second pulley 12. The rotating frame 7 rotates under the action of the first pulley 8. The screw rod 10 drives the moving plate 14 to move under the action of the rotating frame 7. The guide rod 13 moves following the moving plate 14, and the height of the heat exchange box 26 can be adjusted to correspond to the air outlet of the steam turbine. The heat exchange box 26 is placed on the moving plate 14. The first threaded rod 18 is rotated, and the clamping plate 16 moves on the sliding groove 15 under the action of the first threaded rod 18 and abuts against the side wall surface of the heat exchange box 26, so that the heat exchange box 26 can be clamped and fixed. The limiting rod 25 moves out of the working box 21 under the action of the spring 24 and enters the limiting hole 20 on the moving rod 19, thereby limiting the clamping plate 16 to prevent the heat exchange box 26 from moving during operation. The intake pipe 30 is connected to the air outlet of the steam turbine. The steam enters the serpentine heat exchange tube 29 through the steam pipe. The liquid is placed into the heat exchange box 26 through the liquid inlet pipe 27. The hot steam contacts the liquid, and the liquid absorbs the heat of the hot steam, thereby recovering the heat. After heat exchange, the steam is discharged through the serpentine heat exchange tube 29. The condensed steam becomes condensed water, and the condensed water is discharged through the drain pipe 31 on the intake pipe 30. The intake pipe 30 is inclined to facilitate the discharge of the condensed water. When the liquid absorbs heat, it can be discharged through the liquid outlet pipe 28. When the serpentine heat exchange tube 29 needs to be cleaned, the second motor 35 is driven, and the second motor 35 drives the driving pulley 36 to rotate. The driving pulley 36 and the driven pulley 37 can drive the toothed belt 38 to move reciprocally, thereby driving the cleaning brush 41 on the sliding frame 40 to clean the serpentine heat exchange tube 29.

[0043] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0044] The above content is only an example and explanation of the structure of the present invention. Those skilled in the art of the present technology can make various modifications or supplements to the described specific embodiments or use similar methods to replace them. As long as it does not deviate from the structure of the invention or exceed the scope defined by the claims of the present invention, it should fall within the protection scope of the present invention.

Claims

1. A steam turbine drain heat recovery device for a power plant, comprising a bottom plate (1), characterized in that: The bottom plate (1) is provided with A mobile structure is located on the bottom plate (1), the mobile structure comprises a mobile wheel (2) and a connecting plate (3), the connecting plate (3) is mounted on the lower wall of the bottom plate (1), the mobile wheel (2) is mounted on the bottom plate (1), and a fixing component is provided on the bottom plate (1); A lifting structure is located on the bottom plate (1), the lifting structure comprises a support frame (6), the support frame (6) is mounted on the bottom plate (1), a rotating frame (7) is provided on the support frame (6), a guide rod (13) is movably provided on the support frame (6), a movable plate (14) is provided on the guide rod (13), a screw rod (10) is movably provided on the rotating frame (7), and a driving assembly is provided on the support frame (6); A pair of clamping structures are located on the movable plate (14), one of the pair of clamping structures comprises a slide groove (15) and a fixed plate (17), the slide groove (15) is arranged on the movable plate (14), the fixed plate (17) is installed on the movable plate (14), a first threaded rod (18) is movably arranged on the movable plate (14), a clamping plate (16) is arranged on the first threaded rod (18), a working box (21) is arranged on the fixed plate (17), and a limiting component is arranged on the working box (21); A heat exchange structure, located on the movable plate (14), the heat exchange structure comprising a heat exchange box (26), the heat exchange box (26) being provided with a serpentine heat exchange tube (29), the heat exchange box (26) being provided with an air intake pipe (30) and the air intake pipe (30) being connected to one end of the serpentine heat exchange tube (29), the air intake pipe (30) being provided with a liquid discharge pipe (31), the heat exchange box (26) being provided with a liquid intake pipe (27), and the heat exchange box (26) being provided with a liquid outlet pipe (28); A cleaning structure is located on the heat exchange box (26), the fixed structure comprises a fixed frame (32), the fixed frame (32) is installed on the heat exchange box (26), a slide rail (33) is provided on the fixed frame (32), a slider (34) is movably provided on the slide rail (33), a connecting block (39) is provided on the slider (34), a sliding frame (40) is provided on the connecting block (39), a cleaning brush (41) is provided on the sliding frame (40), and a transmission assembly is provided on the fixed frame (32).

2. A power plant steam turbine drain heat recovery device according to claim 1, characterized in that: The fixing assembly comprises a connecting plate (3) and a second threaded rod (4); the connecting plate (3) is mounted on the base plate (1); the second threaded rod (4) is movably mounted on the connecting plate (3); and a stop plate (5) is provided at one end of the second threaded rod (4).

3. A power plant steam turbine drain heat recovery device according to claim 2, characterized in that: The second threaded rod (4) is provided with a rotating handle at one end away from the abutment plate (5).

4. A power plant steam turbine drain heat recovery device according to claim 1, characterized in that: The driving assembly comprises a first motor (11) and a first pulley (8); the first motor (11) is mounted on the support frame (6); the support frame (6) is arranged on the rotating frame (7); a second pulley (12) is arranged at the driving end of the first motor (11); and a transmission belt (9) is arranged on the first pulley (8) and the second pulley (12).

5. The power plant steam turbine drain heat recovery device according to claim 1, characterized in that: The limiting assembly comprises a moving rod (19) and a sliding plate (22), wherein the moving rod (19) is movably mounted on the fixed plate (17), the moving rod (19) is provided with a limiting hole (20), the sliding plate (22) is movably mounted on the working box (21), a pulling rod (23) is provided on the sliding plate (22), and one end of the pulling rod (23) passes through the side wall of the working box (21), the sliding plate (22) is provided with a spring (24), and the sliding plate (22) is provided with a limiting rod (25).

6. The power plant steam turbine drain heat recovery device according to claim 1, characterized in that: The transmission assembly comprises a second motor (35) and a driven pulley (37), wherein the driven pulley (37) is movably arranged on the fixed frame (32), the second motor (35) is mounted on the fixed frame (32), a driving pulley (36) is arranged at the driving end of the second motor (35), a toothed belt (38) is arranged on the driving pulley (36) and the driven pulley (37), and the toothed belt (38) is connected to the connecting block (39).

7. The power plant steam turbine drain heat recovery device according to claim 5, characterized in that: The limiting holes (20) are provided in a plurality.

Images