Condenser for axial exhaust steam turbine and use method of condenser

Abstract

The invention relates to the technical field of condensers, and discloses a condenser for an axial exhaust steam turbine and a using method thereof.The condenser comprises a shell and a condensation pipe, an air inlet pipe is fixedly installed at the top end of the shell, a water receiving hopper is fixedly installed at the bottom end of the shell, and a drainage pipe is fixedly installed at the bottom end of the water receiving hopper; the condensation pipe comprises a water inlet and a water outlet which penetrate through the outer side of the shell, a plurality of supporting plates used for supporting the condensation pipe are fixedly installed in the shell, and two splitter plates are symmetrically hinged to the portion, close to the air inlet pipe, of the interior of the shell. The inverted-V-shaped guide frame drives the two splitter plates to swing around the hinge point of the splitter plates, so that the two splitter plates can intermittently guide hot steam entering from the air inlet pipe to the two sides of the shell, the shell can be evenly filled with the hot steam, the hot steam can make more comprehensive contact with the condensation pipe, and the condensation effect is improved. And the condensation effect of the condensation pipe on hot steam can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of condensers, and in particular to a condenser for an axial exhaust steam turbine and a use method thereof. Background Art

[0002] A condenser is a heat exchanger that condenses steam from a steam turbine into water. It is also called a rehydrator. It is mainly used in steam turbine power plants and is divided into two types: water-based condensers and air-based condensers. After the steam enters the condenser, it exchanges heat with the cooling medium. During the heat transfer process, the heat in the steam will be transferred to the cooling medium, causing its temperature to rise. At the same time, the water molecules in the steam will gradually condense into liquid water, releasing a large amount of latent heat until it is completely condensed into water.

[0003] An existing high-efficiency heat exchange device for a steam turbine condenser (Announcement No.: CN221349766U) has at least the following disadvantages: the above patent transports high-temperature gas into a fixed shell through an air inlet, and then condenses the hot steam through a heat dissipation mechanism in the fixed shell. Since the position of the air inlet is fixed, it is difficult for the incoming hot gas to evenly fill the interior of the fixed shell, so that the hot steam cannot fully contact the condenser tube, resulting in a poor condensation effect of the condenser tube on the hot steam. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a condenser for an axial exhaust steam turbine and a method of using the condenser.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A condenser for an axial exhaust steam turbine comprises an outer shell and a condenser, an air inlet pipe is fixedly mounted on the top of the outer shell, a water receiving bucket is fixedly mounted on the bottom of the outer shell, a drain pipe is fixedly mounted on the bottom of the water receiving bucket, the condenser comprises a water inlet and a water outlet which are arranged through the outer side of the outer shell, a plurality of support plates for supporting the condenser are fixedly mounted inside the outer shell, two diverter plates are symmetrically hinged inside the outer shell near the air inlet pipe, an opening and closing mechanism is installed between the two diverter plates, the opening and closing mechanism comprises an opening which is opened on the outer surface of one adjacent side of the two diverter plates, a guide column is fixedly mounted on the inner wall of the opening, and a lifting mechanism is installed between the air inlet pipe and the two diverter plates.

[0007] As a further solution of the present invention, the lifting mechanism includes a bracket fixedly mounted on the inner wall of the air intake pipe, a rotating tube is rotatably mounted through the bottom end of the bracket, a lifting rod is inserted into the bottom end of the rotating tube, an inverted V-shaped guide frame is fixedly mounted on the bottom end of the lifting rod, an inclined groove is penetrated through the side of the inverted V-shaped guide frame, the guide column is slidably mounted on the inner wall of the inclined groove, and the side of the inverted V-shaped guide frame is abutted against the inner wall of the opening, and a lifting assembly is installed between the rotating tube and the lifting rod.

[0008] As a further solution of the present invention, the lifting assembly includes a guide column fixedly installed on the outer surface of the top end of the lifting rod, the inner wall of the rotating tube is provided with a closed-loop guide groove matching the guide column, the guide column is slidably installed on the inner wall of the closed-loop guide groove, and a fan blade is fixedly installed on the top end of the rotating tube.

[0009] As a further solution of the present invention, a spraying mechanism is installed inside the shell above the condensation tube, and the spraying mechanism includes a spraying pipe that is evenly rotated and installed between the inner walls of the shell on both sides, and a plurality of nozzles connected with the interior thereof are evenly fixedly installed on the bottom of the spraying pipe, one end of the spraying pipe passes through the outer surface of the shell and is installed with a rotating joint, and mutually conductive pipes are installed between the multiple spraying pipes through the rotating joints, a water pump is fixedly installed on the outer surface of the shell, the water outlet end of the water pump is connected with the conductive pipe, and mutually connected connecting pipes are fixedly installed between the water inlet end of the water pump and the water receiving bucket, and a swinging mechanism is installed between the top wall of the shell and the multiple spraying pipes.

[0010] As a further solution of the present invention, the swing mechanism includes a rack slidably mounted on the top wall of the shell, a gear is fixedly mounted on the outer surface of the spray pipe, the rack meshes with the gear, and a pushing component is installed on the outer surface of the rotating pipe.

[0011] As a further solution of the present invention, the pushing assembly includes an eccentric wheel fixedly mounted on the outer surface of the bottom end of the rotating tube, a guide rod is fixedly mounted on the end of the rack close to the rotating tube, a limit block is fixedly mounted on the top wall of the outer shell, the guide rod passes through the outer surface of the limit block and is slidably mounted therewith, and a top plate is fixedly mounted on the end of the guide rod away from the rack, and the top plate abuts against the outer periphery of the eccentric wheel.

[0012] As a further solution of the present invention, a compression spring is sleeved on the outer surface of the guide rod, and the compression spring is arranged between the top plate and the limit block.

[0013] As a further solution of the present invention, a throttle valve is installed at the bottom end of the drain pipe.

[0014] A method for using a condenser for an axial exhaust steam turbine comprises the following steps:

[0015] S1: Cooling water enters the condenser through the water inlet, so that the hot steam entering the shell through the air inlet pipe contacts the condenser and condenses the steam into liquid;

[0016] S2: The condensed liquid enters the water collecting hopper for collection and is finally discharged through the drain pipe for collection and use;

[0017] S3: The cooling water after heat exchange is discharged from the outlet and reused.

[0018] The beneficial effects of the present invention are:

[0019] 1. The hot air entering the air inlet pipe will blow the fan blades to rotate, so that the fan blades drive the rotating tube to rotate. Since the guide column installed at the top of the lifting rod is slidably installed with the inner wall of the closed-loop guide groove opened on the inner wall of the rotating tube, the rotating tube can drive the lifting rod to move up and down through the closed-loop guide groove and the guide column when rotating, so that the inverted V-shaped guide frame installed at the bottom of the lifting rod can move up and down accordingly, so that the inclined groove opened through the side of the inverted V-shaped guide frame can drive the two diverter plates to swing around their hinge points through the guide column, so that the two diverter plates can intermittently guide the hot steam entering from the air inlet pipe to the two sides of the shell, so that the hot steam can be evenly filled into the shell, so that the hot steam can contact the condenser more comprehensively, which can effectively improve the condensation effect of the condenser on the hot steam;

[0020] 2. When the rotating tube rotates, the eccentric wheel will be driven to rotate, so that the eccentric wheel cooperates with the compression spring to continuously push the top plate to move, so that the top plate can continuously push the rack to move back and forth through the guide rod, so that the rack can drive the spray pipe to swing back and forth through the gear meshing with it, so that the nozzle installed on the spray pipe can evenly spray the condensed liquid in the outer shell, so that the sprayed condensed liquid can contact with the hot steam, thereby further cooling the hot steam and accelerating the efficiency of hot steam condensation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The overall structural schematic diagram of a condenser for an axial exhaust steam turbine proposed by the present invention;

[0022] Figure 2 A schematic diagram of the internal structure of a condenser for an axial exhaust steam turbine proposed by the present invention;

[0023] Figure 3 A schematic diagram of the internal structure of a shell of a condenser for an axial exhaust steam turbine proposed by the present invention;

[0024] Figure 4 A schematic diagram of the structure of the installation state of a splitter plate and an inverted V-shaped guide frame for a condenser of an axial exhaust steam turbine proposed by the present invention;

[0025] Figure 5This is a schematic structural diagram of a split state of a splitter plate and an inverted V-shaped guide frame of a condenser for an axial exhaust steam turbine proposed by the present invention;

[0026] Figure 6 A schematic diagram of the structure of the inner wall of a rotating tube of a condenser for an axial exhaust steam turbine proposed by the present invention in an expanded state;

[0027] Figure 7 for Figure 3 A magnified view of the structure at center;

[0028] Figure 8 for Figure 5 Enlarged view of the structure at point B in the middle.

[0029] In the figure: 1. shell; 2. air inlet pipe; 3. water receiving bucket; 4. drain pipe; 5. condenser; 6. water inlet; 7. water outlet; 8. support plate; 9. diverter plate; 10. opening; 11. guide column; 12. inverted V-shaped guide frame; 13. inclined groove; 14. lifting rod; 15. guide column; 16. bracket; 17. rotating pipe; 18. fan blade; 19. closed-loop guide groove; 20. eccentric wheel; 21. spray pipe; 22. rotary joint; 23. guide pipe; 24. water pump; 25. connecting pipe; 26. throttle valve; 27. gear; 28. limit block; 29. ​​guide rod; 30. rack; 31. top plate; 32. compression spring. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] See attached Figure 1 -Attached Figure 8 A condenser for an axial exhaust steam turbine comprises a shell 1 and a condenser 5, an air inlet pipe 2 is fixedly mounted on the top of the shell 1, a water receiving bucket 3 is fixedly mounted on the bottom end of the shell 1, a drain pipe 4 is fixedly mounted on the bottom end of the water receiving bucket 3, the condenser 5 comprises a water inlet 6 and a water outlet 7 which are arranged through the outer side of the shell 1, a plurality of support plates 8 for supporting the condenser 5 are fixedly mounted inside the shell 1, two diverter plates 9 are symmetrically hinged inside the shell 1 near the air inlet pipe 2, an opening and closing mechanism is installed between the two diverter plates 9, the opening and closing mechanism comprises an opening 10 which is opened on the outer surface of one side adjacent to the two diverter plates 9, a guide column 11 is fixedly mounted on the inner wall of the opening 10, and a lifting mechanism is installed between the air inlet pipe 2 and the two diverter plates 9.

[0033] In this embodiment, the lifting mechanism includes a bracket 16 fixedly mounted on the inner wall of the air intake pipe 2, a rotating tube 17 is rotatably mounted through the bottom end of the bracket 16, a lifting rod 14 is inserted into the bottom end of the rotating tube 17, an inverted V-shaped guide frame 12 is fixedly mounted on the bottom end of the lifting rod 14, an inclined groove 13 is penetrated through the side of the inverted V-shaped guide frame 12, a guide column 11 is slidably mounted on the inner wall of the inclined groove 13, and the side of the inverted V-shaped guide frame 12 is abutted against the inner wall of the opening 10, a lifting assembly is installed between the rotating tube 17 and the lifting rod 14, the lifting assembly includes a guide column 15 fixedly mounted on the outer surface of the top end of the lifting rod 14, a closed-loop guide groove 19 matching the guide column 15 is opened on the inner wall of the rotating tube 17, the guide column 15 is slidably mounted on the inner wall of the closed-loop guide groove 19, and a fan blade 18 is fixedly mounted on the top of the rotating tube 17.

[0034] When in use, the hot air entering the air intake pipe 2 will blow the fan blades 18 to rotate, so that the fan blades 18 drive the rotating tube 17 to rotate. Since the guide column 15 installed at the top of the lifting rod 14 is slidably installed with the inner wall of the closed-loop guide groove 19 opened on the inner wall of the rotating tube 17, the rotating tube 17 can drive the lifting rod 14 to move up and down through the closed-loop guide groove 19 and the guide column 15 when rotating, so that the inverted V-shaped guide frame 12 installed at the bottom end of the lifting rod 14 can move up and down accordingly, so that the inclined groove 13 opened through the side of the inverted V-shaped guide frame 12 can drive the two diverter plates 9 to swing around their hinge points through the guide column 11, so that the two diverter plates 9 can intermittently guide the hot steam entering from the air intake pipe 2 to the two sides of the outer shell 1, so that the hot steam can be evenly filled into the inner wall of the outer shell 1, so that the hot steam can contact the condenser 5 more comprehensively, which can effectively improve the condensation effect of the condenser 5 on the hot steam.

[0035] In this embodiment, a spraying mechanism is installed inside the shell 1 above the condensation tube 5, and the spraying mechanism includes a spraying pipe 21 that is evenly rotated and installed between the inner walls of the shell 1 on both sides, and a plurality of nozzles connected with the inside thereof are evenly fixedly installed on the bottom of the spraying pipe 21. One end of the spraying pipe 21 passes through the outer surface of the shell 1 and is installed with a rotating joint 22. A conducting pipe 23 that is connected to each other is installed between the multiple spraying pipes 21 through the rotating joint 22. A water pump 24 is fixedly installed on the outer surface of the shell 1, and the water outlet end of the water pump 24 is connected to the conducting pipe 23. A connecting pipe 25 that is connected to each other is fixedly installed between the water inlet end of the water pump 24 and the water receiving bucket 3. A swinging mechanism is installed between the top wall of the shell 1 and the multiple spraying pipes 21.

[0036] When in use, the water pump 24 draws the condensed liquid in the water receiving bucket 3 into the spraying pipe 21 through the connecting pipe 25 and the conducting pipe 23, so that the nozzle installed on the spraying pipe 21 can spray the condensed liquid to contact the hot steam injected into the outer shell 1, thereby further cooling the hot steam and accelerating the efficiency of hot steam condensation.

[0037] In this embodiment, the swing mechanism includes a rack 30 slidably mounted on the top wall of the outer shell 1, a gear 27 is fixedly mounted on the outer surface of the spray pipe 21, the rack 30 is meshed with the gear 27, a pushing assembly is installed on the outer surface of the rotating tube 17, the pushing assembly includes an eccentric wheel 20 fixedly mounted on the outer surface of the bottom end of the rotating tube 17, a guide rod 29 is fixedly mounted on one end of the rack 30 close to the rotating tube 17, a limit block 28 is fixedly mounted on the top wall of the outer shell 1, the guide rod 29 penetrates the outer surface of the limit block 28 and is slidably mounted therewith, a top plate 31 is fixedly mounted on one end of the guide rod 29 away from the rack 30, the top plate 31 is abutted against the outer periphery of the eccentric wheel 20, a compression spring 32 is sleeved on the outer surface of the guide rod 29, and the compression spring 32 is arranged between the top plate 31 and the limit block 28.

[0038] When the rotating tube 17 rotates, the eccentric wheel 20 will be driven to rotate, so that the eccentric wheel 20 cooperates with the compression spring 32 to continuously push the top plate 31 to move, so that the top plate 31 can continuously push the rack 30 to move back and forth through the guide rod 29, so that the rack 30 can drive the spray pipe 21 to swing back and forth through the gear 27 meshing therewith, so that the nozzle installed on the spray pipe 21 can evenly spray the condensed liquid in the shell 1, so that the sprayed condensed liquid can contact with the hot steam, thereby further cooling the hot steam and accelerating the efficiency of hot steam condensation.

[0039] In this embodiment, a throttle valve 26 is installed at the bottom end of the drain pipe 4. The throttle valve 26 is used to control the flow rate of the condensed liquid discharged from the drain pipe 4, so that a certain amount of water can always be maintained in the water receiving bucket 3 to meet the spraying requirements of the nozzle.

[0040] A method for using a condenser for an axial exhaust steam turbine comprises the following steps:

[0041] S1: Cooling water enters the condenser 5 through the water inlet 6, so that the hot steam entering the shell 1 through the air inlet pipe 2 contacts the condenser 5, and the steam is condensed into liquid;

[0042] S2: The condensed liquid enters the water receiving bucket 3 for collection, and is finally discharged through the drain pipe 4 for collection and use;

[0043] S3: The cooling water after heat exchange is discharged from the water outlet 7 and reused.

[0044] From the above description, it can be seen that the above embodiment of the present invention achieves the following technical effects: when in use, cooling water enters the condenser 5 through the water inlet 6, so that the hot steam entering the shell 1 through the air inlet pipe 2 contacts the condenser 5, and the steam is condensed into liquid. The cooling water after heat exchange is discharged from the water outlet 7 for reuse; the condensed liquid enters the water receiving bucket 3 for collection, and finally is discharged through the drain pipe 4 for collection and use;

[0045] The hot air entering the air inlet pipe 2 will blow the fan blades 18 to rotate, so that the fan blades 18 drive the rotating tube 17 to rotate. Since the guide column 15 installed at the top of the lifting rod 14 is slidably installed with the inner wall of the closed-loop guide groove 19 opened on the inner wall of the rotating tube 17, the rotating tube 17 can drive the lifting rod 14 to move up and down through the closed-loop guide groove 19 and the guide column 15 when rotating, so that the inverted V-shaped guide frame 12 installed at the bottom end of the lifting rod 14 can move up and down accordingly, so that the inclined groove 13 opened through the side of the inverted V-shaped guide frame 12 can drive the two diverter plates 9 to swing around their hinge points through the guide column 11, so that the two diverter plates 9 can intermittently guide the hot steam entering from the air inlet pipe 2 to the two sides of the shell 1, so that the hot steam can be evenly filled into the shell 1, so that the hot steam can contact the condenser 5 more comprehensively, which can effectively improve the condensation effect of the condenser 5 on the hot steam;

[0046] When the rotating tube 17 rotates, the eccentric wheel 20 will be driven to rotate, so that the eccentric wheel 20 cooperates with the compression spring 32 to continuously push the top plate 31 to move, so that the top plate 31 can continuously push the rack 30 to move back and forth through the guide rod 29, so that the rack 30 can drive the spray pipe 21 to swing back and forth through the gear 27 meshing therewith, so that the nozzle installed on the spray pipe 21 can evenly spray the condensed liquid in the shell 1, so that the sprayed condensed liquid can contact with the hot steam, thereby further cooling the hot steam and accelerating the efficiency of hot steam condensation.

[0047] 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 condenser for an axial exhaust steam turbine, comprising a shell (1) and a condenser (5), wherein an air inlet pipe (2) is fixedly mounted on the top of the shell (1), a water receiving bucket (3) is fixedly mounted on the bottom of the shell (1), a drain pipe (4) is fixedly mounted on the bottom of the water receiving bucket (3), the condenser (5) comprises a water inlet (6) and a water outlet (7) which are arranged through the outside of the shell (1), and a plurality of support plates (8) for supporting the condenser (5) are fixedly mounted inside the shell (1), characterized in that: Two diverter plates (9) are symmetrically hinged inside the housing (1) near the air inlet pipe (2), an opening and closing mechanism is installed between the two diverter plates (9), the opening and closing mechanism comprises an opening (10) opened on the outer surface of one adjacent side of the two diverter plates (9), a guide column (11) is fixedly installed on the inner wall of the opening (10), and a lifting mechanism is installed between the air inlet pipe (2) and the two diverter plates (9).

2. A condenser for an axial exhaust steam turbine according to claim 1, characterized in that: The lifting mechanism comprises a bracket (16) fixedly mounted on the inner wall of the air intake pipe (2); a rotating tube (17) is rotatably mounted through the bottom end of the bracket (16); a lifting rod (14) is inserted into the bottom end of the rotating tube (17); an inverted V-shaped guide frame (12) is fixedly mounted on the bottom end of the lifting rod (14); an inclined groove (13) is penetrated through the side of the inverted V-shaped guide frame (12); the guide column (11) is slidably mounted on the inner wall of the inclined groove (13); the side of the inverted V-shaped guide frame (12) is abutted against the inner wall of the opening (10); and a lifting component is installed between the rotating tube (17) and the lifting rod (14).

3. A condenser for an axial exhaust steam turbine according to claim 2, characterized in that: The lifting assembly comprises a guide column (15) fixedly mounted on the outer surface of the top end of the lifting rod (14); the inner wall of the rotating tube (17) is provided with a closed-loop guide groove (19) matching the guide column (15); the guide column (15) is slidably mounted on the inner wall of the closed-loop guide groove (19); and a fan blade (18) is fixedly mounted on the top end of the rotating tube (17).

4. A condenser for an axial exhaust steam turbine according to claim 3, characterized in that: A spray mechanism is installed inside the shell (1) located above the condensation pipe (5), and the spray mechanism comprises a spray pipe (21) which is evenly rotatably installed between the inner walls of the shell (1) on both sides, and a plurality of nozzles connected to the inside of the spray pipe (21) are evenly fixedly installed at the bottom of the spray pipe (21), one end of the spray pipe (21) passes through the outer surface of the shell (1) and is installed with a rotating joint (22), and a conducting pipe (23) which is connected to each other is installed between the plurality of spray pipes (21) through the rotating joint (22), a water pump (24) is fixedly installed on the outer surface of the shell (1), the water outlet end of the water pump (24) is connected to the conducting pipe (23), and a connecting pipe (25) which is connected to each other is fixedly installed between the water inlet end of the water pump (24) and the water receiving bucket (3), and a swing mechanism is installed between the top wall of the shell (1) and the plurality of spray pipes (21).

5. A condenser for an axial exhaust steam turbine according to claim 4, characterized in that: The swing mechanism comprises a rack (30) slidably mounted on the top wall of the housing (1); a gear (27) is fixedly mounted on the outer surface of the spray pipe (21); the rack (30) is meshed with the gear (27); and a pushing assembly is mounted on the outer surface of the rotating pipe (17).

6. A condenser for an axial exhaust steam turbine according to claim 5, characterized in that: The pushing assembly comprises an eccentric wheel (20) fixedly mounted on the outer surface of the bottom end of the rotating tube (17); a guide rod (29) is fixedly mounted on one end of the rack (30) close to the rotating tube (17); a limit block (28) is fixedly mounted on the top wall of the housing (1); the guide rod (29) penetrates the outer surface of the limit block (28) and is slidably mounted therewith; a top plate (31) is fixedly mounted on one end of the guide rod (29) away from the rack (30); and the top plate (31) abuts against the outer periphery of the eccentric wheel (20).

7. A condenser for an axial exhaust steam turbine according to claim 6, characterized in that: The outer surface of the guide rod (29) is sleeved with a compression spring (32), and the compression spring (32) is arranged between the top plate (31) and the limit block (28).

8. The condenser for an axial exhaust steam turbine according to claim 1, characterized in that: A throttle valve (26) is installed at the bottom end of the drainage pipe (4).

9. A method for using a condenser for an axial exhaust steam turbine, characterized in that: A condenser for an axial exhaust steam turbine according to any one of claims 1 to 8 comprises the following steps: S1: Cooling water enters the condenser (5) through the water inlet (6), so that the hot steam entering the housing (1) through the air inlet pipe (2) contacts the condenser (5), and the steam is condensed into liquid; S2: The condensed liquid enters the water receiving bucket (3) for collection, and is finally discharged through the drain pipe (4) for collection and use; S3: The cooling water after heat exchange is discharged from the water outlet (7) and reused.

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